添加项目文件。

TightWiki/Areas/Identity/Pages/Account/AccessDenied.cshtml

@@ -0,0 +1,11 @@
+@page
+@model AccessDeniedModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Access denied.
+</h3>
+
+<p class="text-danger">You do not have access to this resource.</p>

TightWiki/Areas/Identity/Pages/Account/AccessDenied.cshtml.cs

@@ -0,0 +1,28 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    /// <summary>
+    ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+    ///     directly from your code. This API may change or be removed in future releases.
+    /// </summary>
+    public class AccessDeniedModel : PageModelBase
+    {
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public void OnGet()
+        {
+        }
+        public AccessDeniedModel(SignInManager<IdentityUser> signInManager)
+                        : base(signInManager)
+        {
+
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/ConfirmEmail.cshtml

@@ -0,0 +1,11 @@
+@page
+@model ConfirmEmailModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Confirm your email address.
+</h3>
+
+<p><partial name="_StatusMessage" model="Model.StatusMessage" /></p>

TightWiki/Areas/Identity/Pages/Account/ConfirmEmail.cshtml.cs

@@ -0,0 +1,48 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.WebUtilities;
+using System.Text;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    public class ConfirmEmailModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+
+        public ConfirmEmailModel(SignInManager<IdentityUser> signInManager, UserManager<IdentityUser> userManager)
+                        : base(signInManager)
+        {
+            _userManager = userManager;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string StatusMessage { get; set; }
+        public async Task<IActionResult> OnGetAsync(string userId, string code)
+        {
+            if (userId == null || code == null)
+            {
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Index");
+            }
+
+            var user = await _userManager.FindByIdAsync(userId);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{userId}'.");
+            }
+
+            code = Encoding.UTF8.GetString(WebEncoders.Base64UrlDecode(code));
+            var result = await _userManager.ConfirmEmailAsync(user, code);
+            StatusMessage = result.Succeeded ? "Thank you for confirming your email." : "Error confirming your email.";
+            return Page();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/ConfirmEmailChange.cshtml

@@ -0,0 +1,11 @@
+@page
+@model ConfirmEmailChangeModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Confirm email change
+</h3>
+
+<p><partial name="_StatusMessage" model="Model.StatusMessage" /></p>

TightWiki/Areas/Identity/Pages/Account/ConfirmEmailChange.cshtml.cs

@@ -0,0 +1,67 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.WebUtilities;
+using System.Text;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    public class ConfirmEmailChangeModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly SignInManager<IdentityUser> _signInManager;
+
+        public ConfirmEmailChangeModel(UserManager<IdentityUser> userManager, SignInManager<IdentityUser> signInManager)
+                        : base(signInManager)
+        {
+            _userManager = userManager;
+            _signInManager = signInManager;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string StatusMessage { get; set; }
+
+        public async Task<IActionResult> OnGetAsync(string userId, string email, string code)
+        {
+            if (userId == null || email == null || code == null)
+            {
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Index");
+            }
+
+            var user = await _userManager.FindByIdAsync(userId);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{userId}'.");
+            }
+
+            code = Encoding.UTF8.GetString(WebEncoders.Base64UrlDecode(code));
+            var result = await _userManager.ChangeEmailAsync(user, email, code);
+            if (!result.Succeeded)
+            {
+                StatusMessage = "Error changing email.";
+                return Page();
+            }
+
+            // In our UI email and user name are one and the same, so when we update the email
+            // we need to update the user name.
+            var setUserNameResult = await _userManager.SetUserNameAsync(user, email);
+            if (!setUserNameResult.Succeeded)
+            {
+                StatusMessage = "Error changing user name.";
+                return Page();
+            }
+
+            await _signInManager.RefreshSignInAsync(user);
+            StatusMessage = "Thank you for confirming your email change.";
+            return Page();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/ExternalLogin.cshtml

@@ -0,0 +1,37 @@
+@page
+@using System.Text.Encodings.Web
+@model ExternalLoginModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Register
+</h3>
+
+<p>Associate your @Model.ProviderDisplayName account.</p>
+<hr />
+
+<p id="external-login-description" class="text-info">
+    You've successfully authenticated with <strong>@Model.ProviderDisplayName</strong>.
+    Please enter an email address for this site below and click the Register button to finish
+    logging in.
+</p>
+
+<div class="row">
+    <div class="col-md-4">
+        <form asp-page-handler="Confirmation" asp-route-returnUrl="@UrlEncoder.Default.Encode(Model.ReturnUrl)" method="post">
+            <div asp-validation-summary="ModelOnly" class="text-danger" role="alert"></div>
+            <div class="form-floating mb-3">
+                <input asp-for="Input.Email" class="form-control" autocomplete="email" placeholder="Please enter your email."/>
+                <label asp-for="Input.Email" class="form-label"></label>
+                <span asp-validation-for="Input.Email" class="text-danger"></span>
+            </div>
+            <button type="submit" class="w-100 btn btn-lg btn-primary">Register</button>
+        </form>
+    </div>
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/ExternalLogin.cshtml.cs

@@ -0,0 +1,239 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.WebUtilities;
+using System.ComponentModel.DataAnnotations;
+using System.Security.Claims;
+using System.Text;
+using System.Text.Encodings.Web;
+using TightWiki.Library.Interfaces;
+using TightWiki.Models;
+using TightWiki.Repository;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    [AllowAnonymous]
+    public class ExternalLoginModel : PageModelBase
+    {
+        private readonly SignInManager<IdentityUser> _signInManager;
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly IUserStore<IdentityUser> _userStore;
+        private readonly IUserEmailStore<IdentityUser> _emailStore;
+        private readonly IWikiEmailSender _emailSender;
+        private readonly ILogger<ExternalLoginModel> _logger;
+
+        public ExternalLoginModel(
+            SignInManager<IdentityUser> signInManager,
+            UserManager<IdentityUser> userManager,
+            IUserStore<IdentityUser> userStore,
+            ILogger<ExternalLoginModel> logger,
+            IWikiEmailSender emailSender)
+                        : base(signInManager)
+        {
+            _signInManager = signInManager;
+            _userManager = userManager;
+            _userStore = userStore;
+            _emailStore = GetEmailStore();
+            _logger = logger;
+            _emailSender = emailSender;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public string ProviderDisplayName { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public string ReturnUrl { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string ErrorMessage { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [EmailAddress]
+            public string Email { get; set; }
+        }
+
+        public IActionResult OnGet() => RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/Login");
+
+        public IActionResult OnPost(string provider, string returnUrl = null)
+        {
+            // Request a redirect to the external login provider.
+            var redirectUrl = Url.Page("./ExternalLogin", pageHandler: "Callback", values: new { returnUrl });
+            var properties = _signInManager.ConfigureExternalAuthenticationProperties(provider, redirectUrl);
+            return new ChallengeResult(provider, properties);
+        }
+
+        public async Task<IActionResult> OnGetCallbackAsync(string returnUrl = null, string remoteError = null)
+        {
+            returnUrl = returnUrl ?? Url.Content("~/");
+            if (remoteError != null)
+            {
+                ErrorMessage = $"Error from external provider: {remoteError}";
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/Login", new { ReturnUrl = returnUrl });
+            }
+            var info = await _signInManager.GetExternalLoginInfoAsync();
+            if (info == null)
+            {
+                ErrorMessage = "Error loading external login information.";
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/Login", new { ReturnUrl = returnUrl });
+            }
+
+            // Sign in the user with this external login provider if the user already has a login.
+            var result = await _signInManager.ExternalLoginSignInAsync(info.LoginProvider, info.ProviderKey, isPersistent: false, bypassTwoFactor: true);
+            if (result.Succeeded)
+            {
+                _logger.LogInformation("{Name} logged in with {LoginProvider} provider.", info.Principal.Identity.Name, info.LoginProvider);
+                return LocalRedirect(returnUrl);
+            }
+            if (result.IsLockedOut)
+            {
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/Lockout");
+            }
+            else
+            {
+                // If the user does not have an account, then ask the user to create an account.
+                ReturnUrl = returnUrl;
+                ProviderDisplayName = info.ProviderDisplayName;
+                if (info.Principal.HasClaim(c => c.Type == ClaimTypes.Email))
+                {
+                    Input = new InputModel
+                    {
+                        Email = info.Principal.FindFirstValue(ClaimTypes.Email)
+                    };
+                }
+                return Page();
+            }
+        }
+
+        public async Task<IActionResult> OnPostConfirmationAsync(string returnUrl = null)
+        {
+            returnUrl = returnUrl ?? Url.Content("~/");
+            // Get the information about the user from the external login provider
+            var info = await _signInManager.GetExternalLoginInfoAsync();
+            if (info == null)
+            {
+                ErrorMessage = "Error loading external login information during confirmation.";
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/Login", new { ReturnUrl = returnUrl });
+            }
+
+            if (ModelState.IsValid)
+            {
+                var user = CreateUser();
+
+                await _userStore.SetUserNameAsync(user, Input.Email, CancellationToken.None);
+                await _emailStore.SetEmailAsync(user, Input.Email, CancellationToken.None);
+
+                var result = await _userManager.CreateAsync(user);
+                if (result.Succeeded == false)
+                {
+                    result = await _userManager.AddLoginAsync(user, info);
+                    if (result.Succeeded)
+                    {
+                        _logger.LogInformation("User created an account using {Name} provider.", info.LoginProvider);
+
+                        var userId = await _userManager.GetUserIdAsync(user);
+                        var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
+                        var encodedCode = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
+                        var callbackUrl = Url.Page(
+                            "/Account/ConfirmEmail",
+                            pageHandler: null,
+                            values: new { area = "Identity", userId = userId, code = encodedCode },
+                            protocol: Request.Scheme);
+
+                        var emailTemplate = new StringBuilder(ConfigurationRepository.Get<string>("Membership", "Template: Account Verification Email"));
+                        var basicConfig = ConfigurationRepository.GetConfigurationEntryValuesByGroupName("Basic");
+                        var siteName = basicConfig.Value<string>("Name");
+                        var address = basicConfig.Value<string>("Address");
+                        var profile = UsersRepository.GetAccountProfileByUserId(Guid.Parse(userId));
+
+                        var emailSubject = "Confirm your email";
+                        emailTemplate.Replace("##SUBJECT##", emailSubject);
+                        emailTemplate.Replace("##ACCOUNTCOUNTRY##", profile.Country);
+                        emailTemplate.Replace("##ACCOUNTTIMEZONE##", profile.TimeZone);
+                        emailTemplate.Replace("##ACCOUNTLANGUAGE##", profile.Language);
+                        emailTemplate.Replace("##ACCOUNTEMAIL##", profile.EmailAddress);
+                        emailTemplate.Replace("##ACCOUNTNAME##", profile.AccountName);
+                        emailTemplate.Replace("##PERSONNAME##", $"{profile.FirstName} {profile.LastName}");
+                        emailTemplate.Replace("##CODE##", code);
+                        emailTemplate.Replace("##USERID##", userId);
+                        emailTemplate.Replace("##SITENAME##", siteName);
+                        emailTemplate.Replace("##SITEADDRESS##", address);
+                        emailTemplate.Replace("##CALLBACKURL##", HtmlEncoder.Default.Encode(callbackUrl));
+
+                        await _emailSender.SendEmailAsync(Input.Email, emailSubject, emailTemplate.ToString());
+
+                        // If account confirmation is required, we need to show the link if we don't have a real email sender
+                        if (_userManager.Options.SignIn.RequireConfirmedAccount)
+                        {
+                            return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/RegisterConfirmation", new { Email = Input.Email });
+                        }
+
+                        await _signInManager.SignInAsync(user, isPersistent: false, info.LoginProvider);
+                        return LocalRedirect(returnUrl);
+                    }
+                }
+                foreach (var error in result.Errors)
+                {
+                    ModelState.AddModelError(string.Empty, error.Description);
+                }
+            }
+
+            ProviderDisplayName = info.ProviderDisplayName;
+            ReturnUrl = returnUrl;
+            return Page();
+        }
+
+        private IdentityUser CreateUser()
+        {
+            try
+            {
+                return Activator.CreateInstance<IdentityUser>();
+            }
+            catch
+            {
+                throw new InvalidOperationException($"Can't create an instance of '{nameof(IdentityUser)}'. " +
+                    $"Ensure that '{nameof(IdentityUser)}' is not an abstract class and has a parameterless constructor, or alternatively " +
+                    $"override the external login page in /Areas/Identity/Pages/Account/ExternalLogin.cshtml");
+            }
+        }
+
+        private IUserEmailStore<IdentityUser> GetEmailStore()
+        {
+            if (!_userManager.SupportsUserEmail)
+            {
+                throw new NotSupportedException("The default UI requires a user store with email support.");
+            }
+            return (IUserEmailStore<IdentityUser>)_userStore;
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/ExternalLoginSupplemental.cshtml

@@ -0,0 +1,97 @@
+@page
+@using System.Text.Encodings.Web
+@model ExternalLoginSupplementalModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Signup. Almost there...
+</h3>
+
+<p>
+    You have successfully signed in with the external provider but we still need a bit of information.<br /><br />
+</p>
+
+<form asp-page-handler="Confirmation" asp-route-returnUrl="@UrlEncoder.Default.Encode(Model.ReturnUrl ?? "")" method="post">
+    <div class="container">
+        <div class="form-group row mb-3">
+            <label for="Input.AccountName" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.AccountName)</strong></label>
+            <div class="col-sm-10">
+                @Html.TextBoxFor(m => Model.Input.AccountName, new { @class = "form-control", placeholder = "required" })
+                <small class="form-text text-muted">This account name will be visible publicly.</small>
+                <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.AccountName)</div>
+            </div>
+        </div>
+
+        <div class="form-group row mb-1">
+            <label for="Input.FirstName" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.FirstName)</strong></label>
+            <div class="col-sm-10">
+                @Html.TextBoxFor(m => Model.Input.FirstName, new { @class = "form-control", placeholder = "not required" })
+                <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.FirstName)</div>
+            </div>
+        </div>
+
+        <div class="form-group row mb-3">
+            <label for="Input.LastName" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.LastName)</strong></label>
+            <div class="col-sm-10">
+                @Html.TextBoxFor(m => Model.Input.LastName, new { @class = "form-control", placeholder = "not required" })
+                <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.LastName)</div>
+            </div>
+        </div>
+
+        <div class="form-group row mb-1">
+            <label for="Input.Country" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.Country)</strong></label>
+            <div class="col-sm-10">
+                <select name="Input.Country" id="Input.Country" class="form-control">
+                    <option value="" style="color:#ccc !important;">Select a country</option>
+                    @foreach (var item in Model.Input.Countries)
+                    {
+                        <option value="@item.Value" selected=@(Model.Input.Country == item.Value ? "selected" : null)>
+                            @item.Text
+                        </option>
+                    }
+                </select>
+                <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.Country)</div>
+            </div>
+        </div>
+
+        <div class="form-group row mb-1">
+            <label for="Input.Language" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.Language)</strong></label>
+            <div class="col-sm-10">
+                <select name="Input.Language" id="Input.Language" class="form-control">
+                    <option value="" style="color:#ccc !important;">Select a language</option>
+                    @foreach (var item in Model.Input.Languages)
+                    {
+                        <option value="@item.Value" selected=@(Model.Input.Language == item.Value ? "selected" : null)>
+                            @item.Text
+                        </option>
+                    }
+                </select>
+                <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.Language)</div>
+            </div>
+        </div>
+
+        <div class="form-group row mb-1">
+            <label for="Input.TimeZone" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.TimeZone)</strong></label>
+            <div class="col-sm-10">
+                <select name="Input.TimeZone" id="Input.TimeZone" class="form-control">
+                    <option value="" style="color:#ccc !important;">Select a time-zone</option>
+                    @foreach (var item in Model.Input.TimeZones)
+                    {
+                        <option value="@item.Value" selected=@(Model.Input.TimeZone == item.Value ? "selected" : null)>
+                            @item.Text
+                        </option>
+                    }
+                </select>
+                <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.TimeZone)</div>
+            </div>
+        </div>
+
+        <div class="form-group row mb-1">
+            <div class="col-sm-10 offset-sm-2">
+                <button type="submit" class="btn btn-primary rounded-0">Complete Signup!</button>
+            </div>
+        </div>
+    </div>
+</form>

TightWiki/Areas/Identity/Pages/Account/ExternalLoginSupplemental.cshtml.cs

@@ -0,0 +1,165 @@
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using NTDLS.Helpers;
+using System.ComponentModel.DataAnnotations;
+using System.Security.Claims;
+using TightWiki.Library;
+using TightWiki.Models;
+using TightWiki.Repository;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    public class ExternalLoginSupplementalModel : PageModelBase
+    {
+        [BindProperty]
+        public string? ReturnUrl { get; set; }
+
+        private UserManager<IdentityUser> _userManager;
+
+        public ExternalLoginSupplementalModel(SignInManager<IdentityUser> signInManager,
+            UserManager<IdentityUser> userManager, IUserStore<IdentityUser> userStore)
+            : base(signInManager)
+        {
+            _userManager = userManager;
+        }
+
+        [BindProperty]
+        public InputModel Input { get; set; } = new InputModel();
+
+        public class InputModel
+        {
+            public List<TimeZoneItem> TimeZones { get; set; } = new();
+            public List<CountryItem> Countries { get; set; } = new();
+            public List<LanguageItem> Languages { get; set; } = new();
+
+
+            [Display(Name = "Account Name")]
+            [Required(ErrorMessage = "Account Name is required")]
+            public string AccountName { get; set; } = string.Empty;
+
+            [Display(Name = "First Name")]
+            public string? FirstName { get; set; }
+
+            [Display(Name = "Last Name")]
+            public string? LastName { get; set; } = string.Empty;
+
+            [Display(Name = "Time-Zone")]
+            [Required(ErrorMessage = "TimeZone is required")]
+            public string TimeZone { get; set; } = string.Empty;
+
+            [Display(Name = "Country")]
+            [Required(ErrorMessage = "Country is required")]
+            public string Country { get; set; } = string.Empty;
+
+            [Display(Name = "Language")]
+            [Required(ErrorMessage = "Language is required")]
+            public string Language { get; set; } = string.Empty;
+        }
+
+        public IActionResult OnGet()
+        {
+            ReturnUrl ??= Url.Content("~/");
+
+            if (GlobalConfiguration.AllowSignup != true)
+            {
+                return Redirect($"{GlobalConfiguration.BasePath}/Identity/Account/RegistrationIsNotAllowed");
+            }
+
+            PopulateDefaults();
+
+            return Page();
+        }
+
+        private void PopulateDefaults()
+        {
+            Input.TimeZones = TimeZoneItem.GetAll();
+            Input.Countries = CountryItem.GetAll();
+            Input.Languages = LanguageItem.GetAll();
+
+            var membershipConfig = ConfigurationRepository.GetConfigurationEntryValuesByGroupName("Membership");
+
+            if (string.IsNullOrEmpty(Input.TimeZone))
+                Input.TimeZone = membershipConfig.Value<string>("Default TimeZone").EnsureNotNull();
+
+            if (string.IsNullOrEmpty(Input.Country))
+                Input.Country = membershipConfig.Value<string>("Default Country").EnsureNotNull();
+
+            if (string.IsNullOrEmpty(Input.Language))
+                Input.Language = membershipConfig.Value<string>("Default Language").EnsureNotNull();
+        }
+
+        public async Task<IActionResult> OnPostAsync()
+        {
+            if (GlobalConfiguration.AllowSignup != true)
+            {
+                return Redirect($"{GlobalConfiguration.BasePath}/Identity/Account/RegistrationIsNotAllowed");
+            }
+
+            PopulateDefaults();
+
+            if (!ModelState.IsValid)
+            {
+                return Page();
+            }
+
+            if (string.IsNullOrWhiteSpace(Input.AccountName))
+            {
+                ModelState.AddModelError("Input.AccountName", "Account Name is required.");
+                return Page();
+            }
+            else if (UsersRepository.DoesProfileAccountExist(Input.AccountName))
+            {
+                ModelState.AddModelError("Input.AccountName", "Account Name is already in use.");
+                return Page();
+            }
+
+            var info = await SignInManager.GetExternalLoginInfoAsync();
+            if (info == null)
+            {
+                return NotifyOfError("An error occurred retrieving user information from the external provider.");
+            }
+
+            var email = info.Principal.FindFirstValue(ClaimTypes.Email).EnsureNotNull();
+            if (string.IsNullOrEmpty(email))
+            {
+                return NotifyOfError("The email address was not supplied by the external provider.");
+            }
+
+            var user = new IdentityUser { UserName = email, Email = email };
+            var result = await _userManager.CreateAsync(user);
+            if (!result.Succeeded)
+            {
+                return NotifyOfError("An error occurred while creating the user.");
+            }
+
+            result = await _userManager.AddLoginAsync(user, info);
+            if (!result.Succeeded)
+            {
+                return NotifyOfError("An error occurred while adding the login.");
+            }
+
+            UsersRepository.CreateProfile(Guid.Parse(user.Id), Input.AccountName);
+
+            var membershipConfig = ConfigurationRepository.GetConfigurationEntryValuesByGroupName("Membership");
+            var claimsToAdd = new List<Claim>
+            {
+                new (ClaimTypes.Role, membershipConfig.Value<string>("Default Signup Role").EnsureNotNull()),
+                new ("timezone", Input.TimeZone),
+                new (ClaimTypes.Country, Input.Country),
+                new ("language", Input.Language),
+                new ("firstname", Input.FirstName ?? ""),
+                new ("lastname", Input.LastName ?? ""),
+            };
+
+            SecurityRepository.UpsertUserClaims(_userManager, user, claimsToAdd);
+
+            await SignInManager.SignInAsync(user, isPersistent: false);
+
+            if (string.IsNullOrEmpty(ReturnUrl))
+            {
+                return LocalRedirect($"{GlobalConfiguration.BasePath}/");
+            }
+            return LocalRedirect(ReturnUrl);
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/ForgotPassword.cshtml

@@ -0,0 +1,30 @@
+@page
+@model ForgotPasswordModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Forgot your password?
+</h3>
+
+<p>Enter your email.</p>
+<hr />
+
+<div class="row">
+    <div class="col-md-4">
+        <form method="post">
+            <div asp-validation-summary="ModelOnly" class="text-danger" role="alert"></div>
+            <div class="form-floating mb-3">
+                <input asp-for="Input.Email" class="form-control" autocomplete="username" aria-required="true" placeholder="name@example.com" />
+                <label asp-for="Input.Email" class="form-label"></label>
+                <span asp-validation-for="Input.Email" class="text-danger"></span>
+            </div>
+            <button type="submit" class="w-100 btn btn-lg btn-primary">Reset Password</button>
+        </form>
+    </div>
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/ForgotPassword.cshtml.cs

@@ -0,0 +1,99 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.WebUtilities;
+using System.ComponentModel.DataAnnotations;
+using System.Text;
+using System.Text.Encodings.Web;
+using TightWiki.Library.Interfaces;
+using TightWiki.Models;
+using TightWiki.Repository;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+
+    public class ForgotPasswordModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly IWikiEmailSender _emailSender;
+
+        public ForgotPasswordModel(UserManager<IdentityUser> userManager, SignInManager<IdentityUser> signInManager, IWikiEmailSender emailSender)
+            : base(signInManager)
+        {
+            _userManager = userManager;
+            _emailSender = emailSender;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [EmailAddress]
+            public string Email { get; set; }
+        }
+
+        public async Task<IActionResult> OnPostAsync()
+        {
+            if (ModelState.IsValid)
+            {
+                var user = await _userManager.FindByEmailAsync(Input.Email);
+                if (user == null || !(await _userManager.IsEmailConfirmedAsync(user)))
+                {
+                    // Don't reveal that the user does not exist or is not confirmed
+                    return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/ForgotPasswordConfirmation");
+                }
+
+                var code = await _userManager.GeneratePasswordResetTokenAsync(user);
+                var encodedCode = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
+                var callbackUrl = Url.Page(
+                    "/Account/ResetPassword",
+                    pageHandler: null,
+                    values: new { area = "Identity", encodedCode },
+                    protocol: Request.Scheme);
+
+                var emailTemplate = new StringBuilder(ConfigurationRepository.Get<string>("Membership", "Template: Reset Password Email"));
+                var basicConfig = ConfigurationRepository.GetConfigurationEntryValuesByGroupName("Basic");
+                var siteName = basicConfig.Value<string>("Name");
+                var address = basicConfig.Value<string>("Address");
+                var profile = UsersRepository.GetAccountProfileByUserId(Guid.Parse(user.Id));
+
+                var emailSubject = "Reset password";
+                emailTemplate.Replace("##SUBJECT##", emailSubject);
+                emailTemplate.Replace("##ACCOUNTCOUNTRY##", profile.Country);
+                emailTemplate.Replace("##ACCOUNTTIMEZONE##", profile.TimeZone);
+                emailTemplate.Replace("##ACCOUNTLANGUAGE##", profile.Language);
+                emailTemplate.Replace("##ACCOUNTEMAIL##", profile.EmailAddress);
+                emailTemplate.Replace("##ACCOUNTNAME##", profile.AccountName);
+                emailTemplate.Replace("##PERSONNAME##", $"{profile.FirstName} {profile.LastName}");
+                emailTemplate.Replace("##CODE##", code);
+                emailTemplate.Replace("##USERID##", user.Id);
+                emailTemplate.Replace("##SITENAME##", siteName);
+                emailTemplate.Replace("##SITEADDRESS##", address);
+                emailTemplate.Replace("##CALLBACKURL##", HtmlEncoder.Default.Encode(callbackUrl));
+
+                await _emailSender.SendEmailAsync(Input.Email, emailSubject, emailTemplate.ToString());
+
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/ForgotPasswordConfirmation");
+            }
+
+            return Page();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/ForgotPasswordConfirmation.cshtml

@@ -0,0 +1,13 @@
+@page
+@model ForgotPasswordConfirmation
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Forgot password confirmation
+</h3>
+
+<p>
+    Please check your email to reset your password.
+</p>

TightWiki/Areas/Identity/Pages/Account/ForgotPasswordConfirmation.cshtml.cs

@@ -0,0 +1,30 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    /// <summary>
+    ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+    ///     directly from your code. This API may change or be removed in future releases.
+    /// </summary>
+    [AllowAnonymous]
+    public class ForgotPasswordConfirmation : PageModelBase
+    {
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public void OnGet()
+        {
+        }
+        public ForgotPasswordConfirmation(SignInManager<IdentityUser> signInManager)
+                        : base(signInManager)
+        {
+
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Lockout.cshtml

@@ -0,0 +1,11 @@
+@page
+@model LockoutModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Locked out
+</h3>
+
+<p>This account has been locked out, please try again later.</p>

TightWiki/Areas/Identity/Pages/Account/Lockout.cshtml.cs

@@ -0,0 +1,30 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    /// <summary>
+    ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+    ///     directly from your code. This API may change or be removed in future releases.
+    /// </summary>
+    [AllowAnonymous]
+    public class LockoutModel : PageModelBase
+    {
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public void OnGet()
+        {
+        }
+        public LockoutModel(SignInManager<IdentityUser> signInManager)
+                        : base(signInManager)
+        {
+
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Login.cshtml

@@ -0,0 +1,88 @@
+@page
+@using System.Text.Encodings.Web
+@using TightWiki.Models
+@model LoginModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<div class="row">
+    <div class="col-sm-12 col-md-8 col-lg-4">
+        <section>
+            <form id="account" method="post">
+                <div asp-validation-summary="ModelOnly" class="text-danger" role="alert"></div>
+                <div class="form-floating mb-3">
+                    <input asp-for="Input.Email" class="form-control" autocomplete="username" aria-required="true" placeholder="name@example.com" />
+                    <label asp-for="Input.Email" class="form-label">Email</label>
+                    <span asp-validation-for="Input.Email" class="text-danger"></span>
+                </div>
+                <div class="form-floating mb-3">
+                    <input asp-for="Input.Password" class="form-control" autocomplete="current-password" aria-required="true" placeholder="password" />
+                    <label asp-for="Input.Password" class="form-label">Password</label>
+                    <span asp-validation-for="Input.Password" class="text-danger"></span>
+                </div>
+                <div class="checkbox mb-3">
+                    <label asp-for="Input.RememberMe" class="form-label">
+                        <input class="form-check-input" asp-for="Input.RememberMe" />
+                        @Html.DisplayNameFor(m => m.Input.RememberMe)
+                    </label>
+                </div>
+                <div>
+                    <button id="login-submit" type="submit" class="w-100 btn btn-lg btn-primary">Log in</button>
+                    <br />
+                </div>
+                <div>
+                    <p>
+                        <a id="forgot-password" asp-page="./ForgotPassword">Forgot your password?</a>
+                        <br />
+                        @if (TightWiki.Models.GlobalConfiguration.AllowSignup == true)
+                        {
+                            <a asp-page="./Register" asp-route-returnUrl="@UrlEncoder.Default.Encode(Model.ReturnUrl)">Register as a new user</a>
+                            <br />
+                        }
+                        <a id="resend-confirmation" asp-page="./ResendEmailConfirmation">Resend email confirmation</a>
+                        <br />
+                    </p>
+                </div>
+            </form>
+        </section>
+        <section>
+            @{
+                if ((Model.ExternalLogins?.Count ?? 0) > 0)
+                {
+                    <form id="external-account" asp-page="./ExternalLogin" asp-route-returnUrl="@UrlEncoder.Default.Encode(Model.ReturnUrl)" method="post" class="form-horizontal">
+                        <div>
+                            <p>
+                                @foreach (var provider in Model.ExternalLogins!)
+                                {
+                                    if (provider.Name == "Google")
+                                    {
+                                        <button type="submit" class="btn w-100 mb-3 d-flex align-items-center" name="provider" value="@provider.Name" title="Log in using your Google account">
+                                            <img src="@GlobalConfiguration.BasePath/images/external/google-signin.svg" alt="Google" class="me-2" />
+                                        </button>
+                                    }
+                                    else if (provider.Name == "Microsoft")
+                                    {
+                                        <button type="submit" class="btn w-100 mb-3 d-flex align-items-center" name="provider" value="@provider.Name" title="Log in using your Microsoft account">
+                                            <img src="@GlobalConfiguration.BasePath/images/external/microsoft-signin.svg" alt="Microsoft" class="me-2" />
+                                        </button>
+                                    }
+                                    else
+                                    {
+                                        <button type="submit" class="btn btn-primary w-100 mb-3" name="provider" value="@provider.Name" title="Log in using your @provider.DisplayName account">
+                                            @provider.DisplayName
+                                        </button>
+                                    }
+                                }
+                            </p>
+                        </div>
+                    </form>
+                }
+            }
+        </section>
+    </div>
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/Login.cshtml.cs

@@ -0,0 +1,134 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using System.ComponentModel.DataAnnotations;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    public class LoginModel : PageModelBase
+    {
+        private readonly SignInManager<IdentityUser> _signInManager;
+        private readonly ILogger<LoginModel> _logger;
+
+        public LoginModel(SignInManager<IdentityUser> signInManager, ILogger<LoginModel> logger)
+                        : base(signInManager)
+        {
+            _signInManager = signInManager;
+            _logger = logger;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public IList<AuthenticationScheme> ExternalLogins { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public string ReturnUrl { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string ErrorMessage { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [EmailAddress]
+            public string Email { get; set; }
+
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [DataType(DataType.Password)]
+            public string Password { get; set; }
+
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Display(Name = "Remember me?")]
+            public bool RememberMe { get; set; }
+        }
+
+        public async Task OnGetAsync(string returnUrl = null)
+        {
+            if (!string.IsNullOrEmpty(ErrorMessage))
+            {
+                ModelState.AddModelError(string.Empty, ErrorMessage);
+            }
+
+            returnUrl ??= Url.Content("~/");
+
+            // Clear the existing external cookie to ensure a clean login process
+            await HttpContext.SignOutAsync(IdentityConstants.ExternalScheme);
+
+            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
+
+            ReturnUrl = returnUrl;
+        }
+
+        public async Task<IActionResult> OnPostAsync(string returnUrl = null)
+        {
+            returnUrl ??= Url.Content("~/");
+
+            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
+
+            if (ModelState.IsValid)
+            {
+                // This doesn't count login failures towards account lockout
+                // To enable password failures to trigger account lockout, set lockoutOnFailure: true
+                var result = await _signInManager.PasswordSignInAsync(Input.Email, Input.Password, Input.RememberMe, lockoutOnFailure: false);
+                if (result.Succeeded)
+                {
+                    _logger.LogInformation("User logged in.");
+                    return Redirect(returnUrl);
+                }
+                if (result.RequiresTwoFactor)
+                {
+                    return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/LoginWith2fa", new { ReturnUrl = returnUrl, RememberMe = Input.RememberMe });
+                }
+                if (result.IsLockedOut)
+                {
+                    _logger.LogWarning("User account locked out.");
+                    return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/Lockout");
+                }
+                else
+                {
+                    ModelState.AddModelError(string.Empty, "Invalid login attempt.");
+                    return Page();
+                }
+            }
+
+            // If we got this far, something failed, redisplay form
+            return Page();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/LoginWith2fa.cshtml

@@ -0,0 +1,44 @@
+@page
+@using System.Text.Encodings.Web
+@model LoginWith2faModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Two-factor authentication
+</h3>
+
+<p>Your login is protected with an authenticator app. Enter your authenticator code below.</p>
+<hr />
+
+<div class="row">
+    <div class="col-md-4">
+        <form method="post" asp-route-returnUrl="@UrlEncoder.Default.Encode(Model.ReturnUrl)">
+            <input asp-for="RememberMe" type="hidden" />
+            <div asp-validation-summary="ModelOnly" class="text-danger" role="alert"></div>
+            <div class="form-floating mb-3">
+                <input asp-for="Input.TwoFactorCode" class="form-control" autocomplete="off" />
+                <label asp-for="Input.TwoFactorCode" class="form-label"></label>
+                <span asp-validation-for="Input.TwoFactorCode" class="text-danger"></span>
+            </div>
+            <div class="checkbox mb-3">
+                <label asp-for="Input.RememberMachine" class="form-label">
+                    <input asp-for="Input.RememberMachine" />
+                    @Html.DisplayNameFor(m => m.Input.RememberMachine)
+                </label>
+            </div>
+            <div>
+                <button type="submit" class="w-100 btn btn-lg btn-primary">Log in</button>
+            </div>
+        </form>
+    </div>
+</div>
+<p>
+    Don't have access to your authenticator device? You can
+    <a id="recovery-code-login" asp-page="./LoginWithRecoveryCode" asp-route-returnUrl="@UrlEncoder.Default.Encode(Model.ReturnUrl)">log in with a recovery code</a>.
+</p>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/LoginWith2fa.cshtml.cs

@@ -0,0 +1,127 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using System.ComponentModel.DataAnnotations;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    public class LoginWith2faModel : PageModelBase
+    {
+        private readonly SignInManager<IdentityUser> _signInManager;
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly ILogger<LoginWith2faModel> _logger;
+
+        public LoginWith2faModel(
+            SignInManager<IdentityUser> signInManager,
+            UserManager<IdentityUser> userManager,
+            ILogger<LoginWith2faModel> logger)
+                        : base(signInManager)
+        {
+            _signInManager = signInManager;
+            _userManager = userManager;
+            _logger = logger;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public bool RememberMe { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public string ReturnUrl { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [StringLength(7, ErrorMessage = "The {0} must be at least {2} and at max {1} characters long.", MinimumLength = 6)]
+            [DataType(DataType.Text)]
+            [Display(Name = "Authenticator code")]
+            public string TwoFactorCode { get; set; }
+
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Display(Name = "Remember this machine")]
+            public bool RememberMachine { get; set; }
+        }
+
+        public async Task<IActionResult> OnGetAsync(bool rememberMe, string returnUrl = null)
+        {
+            // Ensure the user has gone through the username & password screen first
+            var user = await _signInManager.GetTwoFactorAuthenticationUserAsync();
+
+            if (user == null)
+            {
+                throw new InvalidOperationException($"Unable to load two-factor authentication user.");
+            }
+
+            ReturnUrl = returnUrl;
+            RememberMe = rememberMe;
+
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostAsync(bool rememberMe, string returnUrl = null)
+        {
+            if (!ModelState.IsValid)
+            {
+                return Page();
+            }
+
+            returnUrl = returnUrl ?? Url.Content("~/");
+
+            var user = await _signInManager.GetTwoFactorAuthenticationUserAsync();
+            if (user == null)
+            {
+                throw new InvalidOperationException($"Unable to load two-factor authentication user.");
+            }
+
+            var authenticatorCode = Input.TwoFactorCode.Replace(" ", string.Empty).Replace("-", string.Empty);
+
+            var result = await _signInManager.TwoFactorAuthenticatorSignInAsync(authenticatorCode, rememberMe, Input.RememberMachine);
+
+            var userId = await _userManager.GetUserIdAsync(user);
+
+            if (result.Succeeded)
+            {
+                _logger.LogInformation("User with ID '{UserId}' logged in with 2fa.", user.Id);
+                return LocalRedirect(returnUrl);
+            }
+            else if (result.IsLockedOut)
+            {
+                _logger.LogWarning("User with ID '{UserId}' account locked out.", user.Id);
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/Lockout");
+            }
+            else
+            {
+                _logger.LogWarning("Invalid authenticator code entered for user with ID '{UserId}'.", user.Id);
+                ModelState.AddModelError(string.Empty, "Invalid authenticator code.");
+                return Page();
+            }
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/LoginWithRecoveryCode.cshtml

@@ -0,0 +1,33 @@
+@page
+@model LoginWithRecoveryCodeModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Recovery code verification
+</h3>
+
+<p>
+    You have requested to log in with a recovery code. This login will not be remembered until you provide
+    an authenticator app code at log in or disable 2FA and log in again.
+</p>
+<hr />
+
+<div class="row">
+    <div class="col-md-4">
+        <form method="post">
+            <div asp-validation-summary="ModelOnly" class="text-danger" role="alert"></div>
+            <div class="form-floating mb-3">
+                <input asp-for="Input.RecoveryCode" class="form-control" autocomplete="off" placeholder="RecoveryCode" />
+                <label asp-for="Input.RecoveryCode" class="form-label"></label>
+                <span asp-validation-for="Input.RecoveryCode" class="text-danger"></span>
+            </div>
+            <button type="submit" class="w-100 btn btn-lg btn-primary">Log in</button>
+        </form>
+    </div>
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/LoginWithRecoveryCode.cshtml.cs

@@ -0,0 +1,110 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using System.ComponentModel.DataAnnotations;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    public class LoginWithRecoveryCodeModel : PageModelBase
+    {
+        private readonly SignInManager<IdentityUser> _signInManager;
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly ILogger<LoginWithRecoveryCodeModel> _logger;
+
+        public LoginWithRecoveryCodeModel(
+            SignInManager<IdentityUser> signInManager,
+            UserManager<IdentityUser> userManager,
+            ILogger<LoginWithRecoveryCodeModel> logger)
+                        : base(signInManager)
+        {
+            _signInManager = signInManager;
+            _userManager = userManager;
+            _logger = logger;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public string ReturnUrl { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [BindProperty]
+            [Required]
+            [DataType(DataType.Text)]
+            [Display(Name = "Recovery Code")]
+            public string RecoveryCode { get; set; }
+        }
+
+        public async Task<IActionResult> OnGetAsync(string returnUrl = null)
+        {
+            // Ensure the user has gone through the username & password screen first
+            var user = await _signInManager.GetTwoFactorAuthenticationUserAsync();
+            if (user == null)
+            {
+                throw new InvalidOperationException($"Unable to load two-factor authentication user.");
+            }
+
+            ReturnUrl = returnUrl;
+
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostAsync(string returnUrl = null)
+        {
+            if (!ModelState.IsValid)
+            {
+                return Page();
+            }
+
+            var user = await _signInManager.GetTwoFactorAuthenticationUserAsync();
+            if (user == null)
+            {
+                throw new InvalidOperationException($"Unable to load two-factor authentication user.");
+            }
+
+            var recoveryCode = Input.RecoveryCode.Replace(" ", string.Empty);
+
+            var result = await _signInManager.TwoFactorRecoveryCodeSignInAsync(recoveryCode);
+
+            var userId = await _userManager.GetUserIdAsync(user);
+
+            if (result.Succeeded)
+            {
+                _logger.LogInformation("User with ID '{UserId}' logged in with a recovery code.", user.Id);
+                return LocalRedirect(returnUrl ?? Url.Content("~/"));
+            }
+            if (result.IsLockedOut)
+            {
+                _logger.LogWarning("User account locked out.");
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/Lockout");
+            }
+            else
+            {
+                _logger.LogWarning("Invalid recovery code entered for user with ID '{UserId}' ", user.Id);
+                ModelState.AddModelError(string.Empty, "Invalid recovery code entered.");
+                return Page();
+            }
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Logout.cshtml

@@ -0,0 +1,29 @@
+@page
+@model LogoutModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Logout
+</h3>
+
+<p>
+    Logging out will make sure that others cant use this session to make changes to the wiki. You'll need to log back in before making changes.<br /><br />
+</p>
+<hr />
+
+<header>
+    @{
+        if (User.Identity?.IsAuthenticated ?? false)
+        {
+            <form class="form-inline" asp-area="Identity" asp-page="/Account/Logout" asp-route-returnUrl="@Url.Page("/", new { area = "" })" method="post">
+                <button type="submit" class="btn btn-primary rounded-0">Logout</button>
+            </form>
+        }
+        else
+        {
+            <p>You have successfully logged out of the application.</p>
+        }
+    }
+</header>

TightWiki/Areas/Identity/Pages/Account/Logout.cshtml.cs

@@ -0,0 +1,107 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Authentication.Cookies;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    public class LogoutModel : PageModelBase
+    {
+        private readonly SignInManager<IdentityUser> _signInManager;
+        private readonly ILogger<LogoutModel> _logger;
+        private readonly IAuthenticationSchemeProvider _schemeProvider;
+        private readonly UserManager<IdentityUser> _userManager;
+
+        public LogoutModel(SignInManager<IdentityUser> signInManager, UserManager<IdentityUser> userManager, ILogger<LogoutModel> logger, IAuthenticationSchemeProvider schemeProvider)
+                        : base(signInManager)
+        {
+            _schemeProvider = schemeProvider;
+            _signInManager = signInManager;
+            _userManager = userManager;
+            _logger = logger;
+        }
+
+        public async Task<IActionResult> OnPost(string returnUrl = null)
+        {
+            await _signInManager.SignOutAsync();
+
+            /*
+            var allSchemes = await _schemeProvider.GetAllSchemesAsync();
+            foreach (var scheme in allSchemes)
+            {
+                try
+                {
+                    await HttpContext.SignOutAsync(scheme.Name);
+                }
+                catch
+                {
+                }
+            }
+            */
+
+            /*
+            // Explicitly delete the cookie with the correct path.
+            Response.Cookies.Delete(".AspNetCore.Identity.Application", new CookieOptions
+            {
+                Path = "/TightWiki", // Must match the cookie's path.
+                HttpOnly = true,
+                Secure = true // Use this if the cookie is secure.
+            });
+            */
+
+            /*
+            if (HttpContext.Request.Cookies.Count > 0)
+            {
+                var siteCookies = HttpContext.Request.Cookies
+                    .Where(c => c.Key.Contains(".AspNetCore.")
+                        || c.Key.Contains("Microsoft.Authentication"));
+                foreach (var cookie in siteCookies)
+                {
+                    Response.Cookies.Delete(cookie.Key);
+                }
+            }
+
+            await HttpContext.SignOutAsync(
+                user.AuthenticationScheme);
+
+            HttpContext.Session.Clear();
+
+            await _signInManager.SignOutAsync();
+            await HttpContext.SignOutAsync();
+
+            var allSchemes = await _schemeProvider.GetAllSchemesAsync();
+            foreach (var scheme in allSchemes)
+            {
+                try
+                {
+                    await HttpContext.SignOutAsync(scheme.Name);
+                }
+                catch
+                {
+                }
+            }
+
+            foreach (var cookie in Request.Cookies.Keys)
+            {
+                Response.Cookies.Delete(cookie);
+            }
+            */
+
+            _logger.LogInformation("User logged out.");
+            if (returnUrl != null)
+            {
+                return LocalRedirect(returnUrl);
+            }
+            else
+            {
+                // This needs to be a redirect so that the browser performs a new
+                // request and the identity for the user gets updated.
+                return RedirectToPage();
+            }
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/ChangePassword.cshtml

@@ -0,0 +1,37 @@
+@page
+@model ChangePasswordModel
+@{
+    ViewData["Title"] = "Change password";
+    ViewData["ActivePage"] = ManageNavPages.ChangePassword;
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>@ViewData["Title"]</h3>
+<partial name="_StatusMessage" for="StatusMessage" />
+<div class="row">
+    <div class="col-md-6">
+        <form id="change-password-form" method="post">
+            <div asp-validation-summary="ModelOnly" class="text-danger" role="alert"></div>
+            <div class="form-floating mb-3">
+                <input asp-for="Input.OldPassword" class="form-control" autocomplete="current-password" aria-required="true" placeholder="Please enter your old password." />
+                <label asp-for="Input.OldPassword" class="form-label"></label>
+                <span asp-validation-for="Input.OldPassword" class="text-danger"></span>
+            </div>
+            <div class="form-floating mb-3">
+                <input asp-for="Input.NewPassword" class="form-control" autocomplete="new-password" aria-required="true" placeholder="Please enter your new password." />
+                <label asp-for="Input.NewPassword" class="form-label"></label>
+                <span asp-validation-for="Input.NewPassword" class="text-danger"></span>
+            </div>
+            <div class="form-floating mb-3">
+                <input asp-for="Input.ConfirmPassword" class="form-control" autocomplete="new-password" aria-required="true" placeholder="Please confirm your new password."/>
+                <label asp-for="Input.ConfirmPassword" class="form-label"></label>
+                <span asp-validation-for="Input.ConfirmPassword" class="text-danger"></span>
+            </div>
+            <button type="submit" class="w-100 btn btn-lg btn-primary">Update password</button>
+        </form>
+    </div>
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/Manage/ChangePassword.cshtml.cs

@@ -0,0 +1,138 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using System.ComponentModel.DataAnnotations;
+using TightWiki.Library;
+using TightWiki.Models;
+using TightWiki.Repository;
+
+namespace TightWiki.Areas.Identity.Pages.Account.Manage
+{
+    public class ChangePasswordModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly SignInManager<IdentityUser> _signInManager;
+        private readonly ILogger<ChangePasswordModel> _logger;
+
+        public ChangePasswordModel(
+            UserManager<IdentityUser> userManager,
+            SignInManager<IdentityUser> signInManager,
+            ILogger<ChangePasswordModel> logger)
+                        : base(signInManager)
+        {
+            _userManager = userManager;
+            _signInManager = signInManager;
+            _logger = logger;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string StatusMessage { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [DataType(DataType.Password)]
+            [Display(Name = "Current password")]
+            public string OldPassword { get; set; }
+
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [StringLength(100, ErrorMessage = "The {0} must be at least {2} and at max {1} characters long.", MinimumLength = 6)]
+            [DataType(DataType.Password)]
+            [Display(Name = "New password")]
+            public string NewPassword { get; set; }
+
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [DataType(DataType.Password)]
+            [Display(Name = "Confirm new password")]
+            [Compare("NewPassword", ErrorMessage = "The new password and confirmation password do not match.")]
+            public string ConfirmPassword { get; set; }
+        }
+
+        public async Task<IActionResult> OnGetAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            var hasPassword = await _userManager.HasPasswordAsync(user);
+            if (!hasPassword)
+            {
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/SetPassword");
+            }
+
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostAsync()
+        {
+            if (!ModelState.IsValid)
+            {
+                return Page();
+            }
+
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            var profile = UsersRepository.GetAccountProfileByUserId(Guid.Parse(user.Id));
+            if (user == null)
+            {
+                return NotFound($"Unable to load profile with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            var changePasswordResult = await _userManager.ChangePasswordAsync(user, Input.OldPassword, Input.NewPassword);
+            if (!changePasswordResult.Succeeded)
+            {
+                foreach (var error in changePasswordResult.Errors)
+                {
+                    ModelState.AddModelError(string.Empty, error.Description);
+                }
+                return Page();
+            }
+
+            if (profile.AccountName.Equals(Constants.DEFAULTACCOUNT, StringComparison.CurrentCultureIgnoreCase))
+            {
+                UsersRepository.SetAdminPasswordIsChanged();
+            }
+
+            await _signInManager.RefreshSignInAsync(user);
+            _logger.LogInformation("User changed their password successfully.");
+            StatusMessage = "Your password has been changed.";
+
+            return RedirectToPage();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/Disable2fa.cshtml

@@ -0,0 +1,26 @@
+@page
+@model Disable2faModel
+@{
+    ViewData["Title"] = "Disable two-factor authentication (2FA)";
+    ViewData["ActivePage"] = ManageNavPages.TwoFactorAuthentication;
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<partial name="_StatusMessage" for="StatusMessage" />
+<h3>@ViewData["Title"]</h3>
+
+<div class="alert alert-warning" role="alert">
+    <p>
+        <strong>This action only disables 2FA.</strong>
+    </p>
+    <p>
+        Disabling 2FA does not change the keys used in authenticator apps. If you wish to change the key
+        used in an authenticator app you should <a asp-page="./ResetAuthenticator">reset your authenticator keys.</a>
+    </p>
+</div>
+
+<div>
+    <form method="post">
+        <button class="btn btn-danger" type="submit">Disable 2FA</button>
+    </form>
+</div>

TightWiki/Areas/Identity/Pages/Account/Manage/Disable2fa.cshtml.cs

@@ -0,0 +1,67 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account.Manage
+{
+    public class Disable2faModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly ILogger<Disable2faModel> _logger;
+
+        public Disable2faModel(SignInManager<IdentityUser> signInManager,
+            UserManager<IdentityUser> userManager,
+            ILogger<Disable2faModel> logger)
+                        : base(signInManager)
+        {
+            _userManager = userManager;
+            _logger = logger;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string StatusMessage { get; set; }
+
+        public async Task<IActionResult> OnGet()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            if (!await _userManager.GetTwoFactorEnabledAsync(user))
+            {
+                throw new InvalidOperationException($"Cannot disable 2FA for user as it's not currently enabled.");
+            }
+
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            var disable2faResult = await _userManager.SetTwoFactorEnabledAsync(user, false);
+            if (!disable2faResult.Succeeded)
+            {
+                throw new InvalidOperationException($"Unexpected error occurred disabling 2FA.");
+            }
+
+            _logger.LogInformation("User with ID '{UserId}' has disabled 2fa.", _userManager.GetUserId(User));
+            StatusMessage = "2fa has been disabled. You can reenable 2fa when you setup an authenticator app";
+            return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/TwoFactorAuthentication");
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/Email.cshtml

@@ -0,0 +1,45 @@
+@page
+@model EmailModel
+@{
+    ViewData["Title"] = "Manage Email";
+    ViewData["ActivePage"] = ManageNavPages.Email;
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>@ViewData["Title"]</h3>
+<partial name="_StatusMessage" for="StatusMessage" />
+<div class="row">
+    <div class="col-md-6">
+        <form id="email-form" method="post">
+            <div asp-validation-summary="All" class="text-danger" role="alert"></div>
+            @if (Model.IsEmailConfirmed)
+            {
+                <div class="form-floating mb-3 input-group">
+                    <input asp-for="Email" class="form-control" placeholder="Please enter your email." disabled />
+                        <div class="input-group-append">
+                            <span class="h-100 input-group-text text-success font-weight-bold">✓</span>
+                        </div>
+                    <label asp-for="Email" class="form-label"></label>
+                </div>
+            }
+            else
+            {
+                <div class="form-floating mb-3">
+                    <input asp-for="Email" class="form-control" placeholder="Please enter your email." disabled />
+                    <label asp-for="Email" class="form-label"></label>
+                    <button id="email-verification" type="submit" asp-page-handler="SendVerificationEmail" class="btn btn-link">Send verification email</button>
+                </div>
+            }
+            <div class="form-floating mb-3">
+                <input asp-for="Input.NewEmail" class="form-control" autocomplete="email" aria-required="true" placeholder="Please enter new email." />
+                <label asp-for="Input.NewEmail" class="form-label"></label>
+                <span asp-validation-for="Input.NewEmail" class="text-danger"></span>
+            </div>
+            <button id="change-email-button" type="submit" asp-page-handler="ChangeEmail" class="w-100 btn btn-lg btn-primary">Change email</button>
+        </form>
+    </div>
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/Manage/Email.cshtml.cs

@@ -0,0 +1,189 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.WebUtilities;
+using System.ComponentModel.DataAnnotations;
+using System.Text;
+using System.Text.Encodings.Web;
+using TightWiki.Library.Interfaces;
+using TightWiki.Repository;
+
+namespace TightWiki.Areas.Identity.Pages.Account.Manage
+{
+    public class EmailModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly SignInManager<IdentityUser> _signInManager;
+        private readonly IWikiEmailSender _emailSender;
+
+        public EmailModel(
+            UserManager<IdentityUser> userManager,
+            SignInManager<IdentityUser> signInManager,
+            IWikiEmailSender emailSender)
+                        : base(signInManager)
+        {
+            _userManager = userManager;
+            _signInManager = signInManager;
+            _emailSender = emailSender;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public string Email { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public bool IsEmailConfirmed { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string StatusMessage { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [EmailAddress]
+            [Display(Name = "New email")]
+            public string NewEmail { get; set; }
+        }
+
+        private async Task LoadAsync(IdentityUser user)
+        {
+            var email = await _userManager.GetEmailAsync(user);
+            Email = email;
+
+            Input = new InputModel
+            {
+                NewEmail = email,
+            };
+
+            IsEmailConfirmed = await _userManager.IsEmailConfirmedAsync(user);
+        }
+
+        public async Task<IActionResult> OnGetAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            await LoadAsync(user);
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostChangeEmailAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            if (!ModelState.IsValid)
+            {
+                await LoadAsync(user);
+                return Page();
+            }
+
+            var email = await _userManager.GetEmailAsync(user);
+            if (Input.NewEmail != email)
+            {
+                var userId = await _userManager.GetUserIdAsync(user);
+                var code = await _userManager.GenerateChangeEmailTokenAsync(user, Input.NewEmail);
+                var encodedCode = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
+
+                var callbackUrl = Url.Page(
+                    "/Account/ConfirmEmailChange",
+                    pageHandler: null,
+                    values: new { area = "Identity", userId = userId, email = Input.NewEmail, code = encodedCode },
+                    protocol: Request.Scheme);
+
+                var emailTemplate = new StringBuilder(ConfigurationRepository.Get<string>("Membership", "Template: Account Verification Email"));
+                var basicConfig = ConfigurationRepository.GetConfigurationEntryValuesByGroupName("Basic");
+                var siteName = basicConfig.Value<string>("Name");
+                var address = basicConfig.Value<string>("Address");
+                var profile = UsersRepository.GetAccountProfileByUserId(Guid.Parse(userId));
+
+                var emailSubject = "Confirm your email";
+                emailTemplate.Replace("##SUBJECT##", emailSubject);
+                emailTemplate.Replace("##ACCOUNTCOUNTRY##", profile.Country);
+                emailTemplate.Replace("##ACCOUNTTIMEZONE##", profile.TimeZone);
+                emailTemplate.Replace("##ACCOUNTLANGUAGE##", profile.Language);
+                emailTemplate.Replace("##ACCOUNTEMAIL##", profile.EmailAddress);
+                emailTemplate.Replace("##ACCOUNTNAME##", profile.AccountName);
+                emailTemplate.Replace("##PERSONNAME##", $"{profile.FirstName} {profile.LastName}");
+                emailTemplate.Replace("##CODE##", code);
+                emailTemplate.Replace("##USERID##", userId);
+                emailTemplate.Replace("##SITENAME##", siteName);
+                emailTemplate.Replace("##SITEADDRESS##", address);
+                emailTemplate.Replace("##CALLBACKURL##", HtmlEncoder.Default.Encode(callbackUrl));
+
+                await _emailSender.SendEmailAsync(Input.NewEmail, emailSubject, emailTemplate.ToString());
+                StatusMessage = "Confirmation link to change email sent. Please check your email.";
+
+                return RedirectToPage();
+            }
+
+            StatusMessage = "Your email is unchanged.";
+            return RedirectToPage();
+        }
+
+        public async Task<IActionResult> OnPostSendVerificationEmailAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            if (!ModelState.IsValid)
+            {
+                await LoadAsync(user);
+                return Page();
+            }
+
+            var userId = await _userManager.GetUserIdAsync(user);
+            var email = await _userManager.GetEmailAsync(user);
+            var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
+            code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
+            var callbackUrl = Url.Page(
+                "/Account/ConfirmEmail",
+                pageHandler: null,
+                values: new { area = "Identity", userId = userId, code = code },
+                protocol: Request.Scheme);
+            await _emailSender.SendEmailAsync(
+                email,
+                "Confirm your email",
+                $"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>.");
+
+            StatusMessage = "Verification email sent. Please check your email.";
+            return RedirectToPage();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/EnableAuthenticator.cshtml

@@ -0,0 +1,54 @@
+@page
+@model EnableAuthenticatorModel
+@{
+    ViewData["Title"] = "Configure authenticator app";
+    ViewData["ActivePage"] = ManageNavPages.TwoFactorAuthentication;
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<partial name="_StatusMessage" for="StatusMessage" />
+<h3>@ViewData["Title"]</h3>
+<div>
+    <p>To use an authenticator app go through the following steps:</p>
+    <ol class="list">
+        <li>
+            <p>
+                Download a two-factor authenticator app like Microsoft Authenticator for
+                <a href="https://go.microsoft.com/fwlink/?Linkid=825072">Android</a> and
+                <a href="https://go.microsoft.com/fwlink/?Linkid=825073">iOS</a> or
+                Google Authenticator for
+                <a href="https://play.google.com/store/apps/details?id=com.google.android.apps.authenticator2&amp;hl=en">Android</a> and
+                <a href="https://itunes.apple.com/us/app/google-authenticator/id388497605?mt=8">iOS</a>.
+            </p>
+        </li>
+        <li>
+            <p>Scan the QR Code or enter this key <kbd>@Model.SharedKey</kbd> into your two factor authenticator app. Spaces and casing do not matter.</p>
+            <div class="alert alert-info">Learn how to <a href="https://go.microsoft.com/fwlink/?Linkid=852423">enable QR code generation</a>.</div>
+            <div id="qrCode"></div>
+            <div id="qrCodeData" data-url="@Model.AuthenticatorUri"></div>
+        </li>
+        <li>
+            <p>
+                Once you have scanned the QR code or input the key above, your two factor authentication app will provide you
+                with a unique code. Enter the code in the confirmation box below.
+            </p>
+            <div class="row">
+                <div class="col-md-6">
+                    <form id="send-code" method="post">
+                        <div class="form-floating mb-3">
+                            <input asp-for="Input.Code" class="form-control" autocomplete="off" placeholder="Please enter the code."/>
+                            <label asp-for="Input.Code" class="control-label form-label">Verification Code</label>
+                            <span asp-validation-for="Input.Code" class="text-danger"></span>
+                        </div>
+                        <button type="submit" class="w-100 btn btn-lg btn-primary">Verify</button>
+                        <div asp-validation-summary="ModelOnly" class="text-danger" role="alert"></div>
+                    </form>
+                </div>
+            </div>
+        </li>
+    </ol>
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/Manage/EnableAuthenticator.cshtml.cs

@@ -0,0 +1,185 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using System.ComponentModel.DataAnnotations;
+using System.Globalization;
+using System.Text;
+using System.Text.Encodings.Web;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account.Manage
+{
+    public class EnableAuthenticatorModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly ILogger<EnableAuthenticatorModel> _logger;
+        private readonly UrlEncoder _urlEncoder;
+
+        private const string AuthenticatorUriFormat = "otpauth://totp/{0}:{1}?secret={2}&issuer={0}&digits=6";
+
+        public EnableAuthenticatorModel(SignInManager<IdentityUser> signInManager,
+            UserManager<IdentityUser> userManager,
+            ILogger<EnableAuthenticatorModel> logger,
+            UrlEncoder urlEncoder)
+                        : base(signInManager)
+        {
+            _userManager = userManager;
+            _logger = logger;
+            _urlEncoder = urlEncoder;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public string SharedKey { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public string AuthenticatorUri { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string[] RecoveryCodes { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string StatusMessage { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [StringLength(7, ErrorMessage = "The {0} must be at least {2} and at max {1} characters long.", MinimumLength = 6)]
+            [DataType(DataType.Text)]
+            [Display(Name = "Verification Code")]
+            public string Code { get; set; }
+        }
+
+        public async Task<IActionResult> OnGetAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            await LoadSharedKeyAndQrCodeUriAsync(user);
+
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            if (!ModelState.IsValid)
+            {
+                await LoadSharedKeyAndQrCodeUriAsync(user);
+                return Page();
+            }
+
+            // Strip spaces and hyphens
+            var verificationCode = Input.Code.Replace(" ", string.Empty).Replace("-", string.Empty);
+
+            var is2faTokenValid = await _userManager.VerifyTwoFactorTokenAsync(
+                user, _userManager.Options.Tokens.AuthenticatorTokenProvider, verificationCode);
+
+            if (!is2faTokenValid)
+            {
+                ModelState.AddModelError("Input.Code", "Verification code is invalid.");
+                await LoadSharedKeyAndQrCodeUriAsync(user);
+                return Page();
+            }
+
+            await _userManager.SetTwoFactorEnabledAsync(user, true);
+            var userId = await _userManager.GetUserIdAsync(user);
+            _logger.LogInformation("User with ID '{UserId}' has enabled 2FA with an authenticator app.", userId);
+
+            StatusMessage = "Your authenticator app has been verified.";
+
+            if (await _userManager.CountRecoveryCodesAsync(user) == 0)
+            {
+                var recoveryCodes = await _userManager.GenerateNewTwoFactorRecoveryCodesAsync(user, 10);
+                RecoveryCodes = recoveryCodes.ToArray();
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/ShowRecoveryCodes");
+            }
+            else
+            {
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/TwoFactorAuthentication");
+            }
+        }
+
+        private async Task LoadSharedKeyAndQrCodeUriAsync(IdentityUser user)
+        {
+            // Load the authenticator key & QR code URI to display on the form
+            var unformattedKey = await _userManager.GetAuthenticatorKeyAsync(user);
+            if (string.IsNullOrEmpty(unformattedKey))
+            {
+                await _userManager.ResetAuthenticatorKeyAsync(user);
+                unformattedKey = await _userManager.GetAuthenticatorKeyAsync(user);
+            }
+
+            SharedKey = FormatKey(unformattedKey);
+
+            var email = await _userManager.GetEmailAsync(user);
+            AuthenticatorUri = GenerateQrCodeUri(email, unformattedKey);
+        }
+
+        private string FormatKey(string unformattedKey)
+        {
+            var result = new StringBuilder();
+            int currentPosition = 0;
+            while (currentPosition + 4 < unformattedKey.Length)
+            {
+                result.Append(unformattedKey.AsSpan(currentPosition, 4)).Append(' ');
+                currentPosition += 4;
+            }
+            if (currentPosition < unformattedKey.Length)
+            {
+                result.Append(unformattedKey.AsSpan(currentPosition));
+            }
+
+            return result.ToString().ToLowerInvariant();
+        }
+
+        private string GenerateQrCodeUri(string email, string unformattedKey)
+        {
+            return string.Format(
+                CultureInfo.InvariantCulture,
+                AuthenticatorUriFormat,
+                _urlEncoder.Encode("Microsoft.AspNetCore.Identity.UI"),
+                _urlEncoder.Encode(email),
+                unformattedKey);
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/ExternalLogins.cshtml

@@ -0,0 +1,52 @@
+@page
+@model ExternalLoginsModel
+@{
+    ViewData["Title"] = "Manage your external logins";
+    ViewData["ActivePage"] = ManageNavPages.ExternalLogins;
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<partial name="_StatusMessage" for="StatusMessage" />
+@if (Model.CurrentLogins?.Count > 0)
+{
+    <h3>Registered Logins</h3>
+    <table class="table">
+        <tbody>
+            @foreach (var login in Model.CurrentLogins)
+            {
+                <tr>
+                    <td id="@($"login-provider-{login.LoginProvider}")">@login.ProviderDisplayName</td>
+                    <td>
+                        @if (Model.ShowRemoveButton)
+                        {
+                            <form id="@($"remove-login-{login.LoginProvider}")" asp-page-handler="RemoveLogin" method="post">
+                                <div>
+                                    <input asp-for="@login.LoginProvider" name="LoginProvider" type="hidden" />
+                                    <input asp-for="@login.ProviderKey" name="ProviderKey" type="hidden" />
+                                    <button type="submit" class="btn btn-primary" title="Remove this @login.ProviderDisplayName login from your account">Remove</button>
+                                </div>
+                            </form>
+                        }
+                        else
+                        {
+                            @: &nbsp;
+                        }
+                    </td>
+                </tr>
+            }
+        </tbody>
+    </table>
+}
+@if (Model.OtherLogins?.Count > 0)
+{
+    <form id="link-login-form" asp-page-handler="LinkLogin" method="post" class="form-horizontal">
+        <div id="socialLoginList">
+            <p>
+                @foreach (var provider in Model.OtherLogins)
+                {
+                    <button id="@($"link-login-button-{provider.Name}")" type="submit" class="btn btn-primary" name="provider" value="@provider.Name" title="Log in using your @provider.DisplayName account">@provider.DisplayName</button>
+                }
+            </p>
+        </div>
+    </form>
+}

TightWiki/Areas/Identity/Pages/Account/Manage/ExternalLogins.cshtml.cs

@@ -0,0 +1,136 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+
+namespace TightWiki.Areas.Identity.Pages.Account.Manage
+{
+    public class ExternalLoginsModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly SignInManager<IdentityUser> _signInManager;
+        private readonly IUserStore<IdentityUser> _userStore;
+
+        public ExternalLoginsModel(
+            UserManager<IdentityUser> userManager,
+            SignInManager<IdentityUser> signInManager,
+            IUserStore<IdentityUser> userStore)
+                        : base(signInManager)
+        {
+            _userManager = userManager;
+            _signInManager = signInManager;
+            _userStore = userStore;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public IList<UserLoginInfo> CurrentLogins { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public IList<AuthenticationScheme> OtherLogins { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public bool ShowRemoveButton { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string StatusMessage { get; set; }
+
+        public async Task<IActionResult> OnGetAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            CurrentLogins = await _userManager.GetLoginsAsync(user);
+            OtherLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync())
+                .Where(auth => CurrentLogins.All(ul => auth.Name != ul.LoginProvider))
+                .ToList();
+
+            string passwordHash = null;
+            if (_userStore is IUserPasswordStore<IdentityUser> userPasswordStore)
+            {
+                passwordHash = await userPasswordStore.GetPasswordHashAsync(user, HttpContext.RequestAborted);
+            }
+
+            ShowRemoveButton = passwordHash != null || CurrentLogins.Count > 1;
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostRemoveLoginAsync(string loginProvider, string providerKey)
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            var result = await _userManager.RemoveLoginAsync(user, loginProvider, providerKey);
+            if (!result.Succeeded)
+            {
+                StatusMessage = "The external login was not removed.";
+                return RedirectToPage();
+            }
+
+            await _signInManager.RefreshSignInAsync(user);
+            StatusMessage = "The external login was removed.";
+            return RedirectToPage();
+        }
+
+        public async Task<IActionResult> OnPostLinkLoginAsync(string provider)
+        {
+            // Clear the existing external cookie to ensure a clean login process
+            await HttpContext.SignOutAsync(IdentityConstants.ExternalScheme);
+
+            // Request a redirect to the external login provider to link a login for the current user
+            var redirectUrl = Url.Page("./ExternalLogins", pageHandler: "LinkLoginCallback");
+            var properties = _signInManager.ConfigureExternalAuthenticationProperties(provider, redirectUrl, _userManager.GetUserId(User));
+            return new ChallengeResult(provider, properties);
+        }
+
+        public async Task<IActionResult> OnGetLinkLoginCallbackAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            var userId = await _userManager.GetUserIdAsync(user);
+            var info = await _signInManager.GetExternalLoginInfoAsync(userId);
+            if (info == null)
+            {
+                throw new InvalidOperationException($"Unexpected error occurred loading external login info.");
+            }
+
+            var result = await _userManager.AddLoginAsync(user, info);
+            if (!result.Succeeded)
+            {
+                StatusMessage = "The external login was not added. External logins can only be associated with one account.";
+                return RedirectToPage();
+            }
+
+            // Clear the existing external cookie to ensure a clean login process
+            await HttpContext.SignOutAsync(IdentityConstants.ExternalScheme);
+
+            StatusMessage = "The external login was added.";
+            return RedirectToPage();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/GenerateRecoveryCodes.cshtml

@@ -0,0 +1,28 @@
+@page
+@model GenerateRecoveryCodesModel
+@{
+    ViewData["Title"] = "Generate two-factor authentication (2FA) recovery codes";
+    ViewData["ActivePage"] = ManageNavPages.TwoFactorAuthentication;
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<partial name="_StatusMessage" for="StatusMessage" />
+<h3>@ViewData["Title"]</h3>
+<div class="alert alert-warning" role="alert">
+    <p>
+        <span class="glyphicon glyphicon-warning-sign"></span>
+        <strong>Put these codes in a safe place.</strong>
+    </p>
+    <p>
+        If you lose your device and don't have the recovery codes you will lose access to your account.
+    </p>
+    <p>
+        Generating new recovery codes does not change the keys used in authenticator apps. If you wish to change the key
+        used in an authenticator app you should <a asp-page="./ResetAuthenticator">reset your authenticator keys.</a>
+    </p>
+</div>
+<div>
+    <form method="post">
+        <button class="btn btn-danger" type="submit">Generate Recovery Codes</button>
+    </form>
+</div>

TightWiki/Areas/Identity/Pages/Account/Manage/GenerateRecoveryCodes.cshtml.cs

@@ -0,0 +1,79 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account.Manage
+{
+    public class GenerateRecoveryCodesModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly ILogger<GenerateRecoveryCodesModel> _logger;
+
+        public GenerateRecoveryCodesModel(SignInManager<IdentityUser> signInManager,
+            UserManager<IdentityUser> userManager,
+            ILogger<GenerateRecoveryCodesModel> logger)
+                        : base(signInManager)
+        {
+            _userManager = userManager;
+            _logger = logger;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string[] RecoveryCodes { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string StatusMessage { get; set; }
+
+        public async Task<IActionResult> OnGetAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            var isTwoFactorEnabled = await _userManager.GetTwoFactorEnabledAsync(user);
+            if (!isTwoFactorEnabled)
+            {
+                throw new InvalidOperationException($"Cannot generate recovery codes for user because they do not have 2FA enabled.");
+            }
+
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            var isTwoFactorEnabled = await _userManager.GetTwoFactorEnabledAsync(user);
+            var userId = await _userManager.GetUserIdAsync(user);
+            if (!isTwoFactorEnabled)
+            {
+                throw new InvalidOperationException($"Cannot generate recovery codes for user as they do not have 2FA enabled.");
+            }
+
+            var recoveryCodes = await _userManager.GenerateNewTwoFactorRecoveryCodesAsync(user, 10);
+            RecoveryCodes = recoveryCodes.ToArray();
+
+            _logger.LogInformation("User with ID '{UserId}' has generated new 2FA recovery codes.", userId);
+            StatusMessage = "You have generated new recovery codes.";
+            return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/ShowRecoveryCodes");
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/Index.cshtml

@@ -0,0 +1,4 @@
+@page
+@model IndexModel
+@{
+}

TightWiki/Areas/Identity/Pages/Account/Manage/Index.cshtml.cs

@@ -0,0 +1,18 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account.Manage
+{
+    public class IndexModel : PageModel
+    {
+        public IActionResult OnGetAsync()
+        {
+            return Redirect($"{GlobalConfiguration.BasePath}/Identity/Account/Manage/Email");
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/ManageNavPages.cs

@@ -0,0 +1,74 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Mvc.Rendering;
+
+namespace TightWiki.Areas.Identity.Pages.Account.Manage
+{
+    /// <summary>
+    ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+    ///     directly from your code. This API may change or be removed in future releases.
+    /// </summary>
+    public static class ManageNavPages
+    {
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public static string Email => "Email";
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public static string ChangePassword => "ChangePassword";
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public static string ExternalLogins => "ExternalLogins";
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public static string TwoFactorAuthentication => "TwoFactorAuthentication";
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public static string EmailNavClass(ViewContext viewContext) => PageNavClass(viewContext, Email);
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public static string ChangePasswordNavClass(ViewContext viewContext) => PageNavClass(viewContext, ChangePassword);
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public static string ExternalLoginsNavClass(ViewContext viewContext) => PageNavClass(viewContext, ExternalLogins);
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public static string TwoFactorAuthenticationNavClass(ViewContext viewContext) => PageNavClass(viewContext, TwoFactorAuthentication);
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public static string PageNavClass(ViewContext viewContext, string page)
+        {
+            var activePage = viewContext.ViewData["ActivePage"] as string
+                ?? System.IO.Path.GetFileNameWithoutExtension(viewContext.ActionDescriptor.DisplayName);
+            return string.Equals(activePage, page, StringComparison.OrdinalIgnoreCase) ? "active" : null;
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/ResetAuthenticator.cshtml

@@ -0,0 +1,25 @@
+@page
+@model ResetAuthenticatorModel
+@{
+    ViewData["Title"] = "Reset authenticator key";
+    ViewData["ActivePage"] = ManageNavPages.TwoFactorAuthentication;
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<partial name="_StatusMessage" for="StatusMessage" />
+<h3>@ViewData["Title"]</h3>
+<div class="alert alert-warning" role="alert">
+    <p>
+        <span class="glyphicon glyphicon-warning-sign"></span>
+        <strong>If you reset your authenticator key your authenticator app will not work until you reconfigure it.</strong>
+    </p>
+    <p>
+        This process disables 2FA until you verify your authenticator app.
+        If you do not complete your authenticator app configuration you may lose access to your account.
+    </p>
+</div>
+<div>
+    <form id="reset-authenticator-form" method="post">
+        <button id="reset-authenticator-button" class="btn btn-danger" type="submit">Reset authenticator key</button>
+    </form>
+</div>

TightWiki/Areas/Identity/Pages/Account/Manage/ResetAuthenticator.cshtml.cs

@@ -0,0 +1,66 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account.Manage
+{
+    public class ResetAuthenticatorModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly SignInManager<IdentityUser> _signInManager;
+        private readonly ILogger<ResetAuthenticatorModel> _logger;
+
+        public ResetAuthenticatorModel(
+            UserManager<IdentityUser> userManager,
+            SignInManager<IdentityUser> signInManager,
+            ILogger<ResetAuthenticatorModel> logger)
+                        : base(signInManager)
+
+        {
+            _userManager = userManager;
+            _signInManager = signInManager;
+            _logger = logger;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string StatusMessage { get; set; }
+
+        public async Task<IActionResult> OnGet()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            await _userManager.SetTwoFactorEnabledAsync(user, false);
+            await _userManager.ResetAuthenticatorKeyAsync(user);
+            var userId = await _userManager.GetUserIdAsync(user);
+            _logger.LogInformation("User with ID '{UserId}' has reset their authentication app key.", user.Id);
+
+            await _signInManager.RefreshSignInAsync(user);
+            StatusMessage = "Your authenticator app key has been reset, you will need to configure your authenticator app using the new key.";
+
+            return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/EnableAuthenticator");
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/SetPassword.cshtml

@@ -0,0 +1,36 @@
+@page
+@model SetPasswordModel
+@{
+    ViewData["Title"] = "Set password";
+    ViewData["ActivePage"] = ManageNavPages.ChangePassword;
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>Set your password</h3>
+<partial name="_StatusMessage" for="StatusMessage" />
+<p class="text-info">
+    You do not have a local username/password for this site. Add a local
+    account so you can log in without an external login.
+</p>
+<div class="row">
+    <div class="col-md-6">
+        <form id="set-password-form" method="post">
+            <div asp-validation-summary="ModelOnly" class="text-danger" role="alert"></div>
+            <div class="form-floating mb-3">
+                <input asp-for="Input.NewPassword" class="form-control" autocomplete="new-password" placeholder="Please enter your new password."/>
+                <label asp-for="Input.NewPassword" class="form-label"></label>
+                <span asp-validation-for="Input.NewPassword" class="text-danger"></span>
+            </div>
+            <div class="form-floating mb-3">
+                <input asp-for="Input.ConfirmPassword" class="form-control" autocomplete="new-password" placeholder="Please confirm your new password."/>
+                <label asp-for="Input.ConfirmPassword" class="form-label"></label>
+                <span asp-validation-for="Input.ConfirmPassword" class="text-danger"></span>
+            </div>
+            <button type="submit" class="w-100 btn btn-lg btn-primary">Set password</button>
+        </form>
+    </div>
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/Manage/SetPassword.cshtml.cs

@@ -0,0 +1,114 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using System.ComponentModel.DataAnnotations;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account.Manage
+{
+    public class SetPasswordModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly SignInManager<IdentityUser> _signInManager;
+
+        public SetPasswordModel(
+            UserManager<IdentityUser> userManager,
+            SignInManager<IdentityUser> signInManager)
+                        : base(signInManager)
+
+        {
+            _userManager = userManager;
+            _signInManager = signInManager;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string StatusMessage { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [StringLength(100, ErrorMessage = "The {0} must be at least {2} and at max {1} characters long.", MinimumLength = 6)]
+            [DataType(DataType.Password)]
+            [Display(Name = "New password")]
+            public string NewPassword { get; set; }
+
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [DataType(DataType.Password)]
+            [Display(Name = "Confirm new password")]
+            [Compare("NewPassword", ErrorMessage = "The new password and confirmation password do not match.")]
+            public string ConfirmPassword { get; set; }
+        }
+
+        public async Task<IActionResult> OnGetAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            var hasPassword = await _userManager.HasPasswordAsync(user);
+
+            if (hasPassword)
+            {
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/ChangePassword");
+            }
+
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostAsync()
+        {
+            if (!ModelState.IsValid)
+            {
+                return Page();
+            }
+
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            var addPasswordResult = await _userManager.AddPasswordAsync(user, Input.NewPassword);
+            if (!addPasswordResult.Succeeded)
+            {
+                foreach (var error in addPasswordResult.Errors)
+                {
+                    ModelState.AddModelError(string.Empty, error.Description);
+                }
+                return Page();
+            }
+
+            await _signInManager.RefreshSignInAsync(user);
+            StatusMessage = "Your password has been set.";
+
+            return RedirectToPage();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/ShowRecoveryCodes.cshtml

@@ -0,0 +1,26 @@
+@page
+@model ShowRecoveryCodesModel
+@{
+    ViewData["Title"] = "Recovery codes";
+    ViewData["ActivePage"] = "TwoFactorAuthentication";
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<partial name="_StatusMessage" for="StatusMessage" />
+<h3>@ViewData["Title"]</h3>
+<div class="alert alert-warning" role="alert">
+    <p>
+        <strong>Put these codes in a safe place.</strong>
+    </p>
+    <p>
+        If you lose your device and don't have the recovery codes you will lose access to your account.
+    </p>
+</div>
+<div class="row">
+    <div class="col-md-12">
+        @for (var row = 0; row < Model.RecoveryCodes.Length; row += 2)
+        {
+            <code class="recovery-code">@Model.RecoveryCodes[row]</code><text>&nbsp;</text><code class="recovery-code">@Model.RecoveryCodes[row + 1]</code><br />
+        }
+    </div>
+</div>

TightWiki/Areas/Identity/Pages/Account/Manage/ShowRecoveryCodes.cshtml.cs

@@ -0,0 +1,45 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account.Manage
+{
+    /// <summary>
+    ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+    ///     directly from your code. This API may change or be removed in future releases.
+    /// </summary>
+    public class ShowRecoveryCodesModel : PageModel
+    {
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string[] RecoveryCodes { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string StatusMessage { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public IActionResult OnGet()
+        {
+            if (RecoveryCodes == null || RecoveryCodes.Length == 0)
+            {
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/TwoFactorAuthentication");
+            }
+
+            return Page();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/TwoFactorAuthentication.cshtml

@@ -0,0 +1,72 @@
+@page
+@using Microsoft.AspNetCore.Http.Features
+@model TwoFactorAuthenticationModel
+@{
+    ViewData["Title"] = "Two-factor authentication (2FA)";
+    ViewData["ActivePage"] = ManageNavPages.TwoFactorAuthentication;
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<partial name="_StatusMessage" for="StatusMessage" />
+<h3>@ViewData["Title"]</h3>
+@{
+    var consentFeature = HttpContext.Features.Get<ITrackingConsentFeature>();
+    @if (consentFeature?.CanTrack ?? true)
+    {
+        @if (Model.Is2faEnabled)
+        {
+            if (Model.RecoveryCodesLeft == 0)
+            {
+                <div class="alert alert-danger">
+                    <strong>You have no recovery codes left.</strong>
+                    <p>You must <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a> before you can log in with a recovery code.</p>
+                </div>
+            }
+            else if (Model.RecoveryCodesLeft == 1)
+            {
+                <div class="alert alert-danger">
+                    <strong>You have 1 recovery code left.</strong>
+                    <p>You can <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a>.</p>
+                </div>
+            }
+            else if (Model.RecoveryCodesLeft <= 3)
+            {
+                <div class="alert alert-warning">
+                    <strong>You have @Model.RecoveryCodesLeft recovery codes left.</strong>
+                    <p>You should <a asp-page="./GenerateRecoveryCodes">generate a new set of recovery codes</a>.</p>
+                </div>
+            }
+
+            if (Model.IsMachineRemembered)
+            {
+                <form method="post" style="display: inline-block">
+                    <button type="submit" class="btn btn-primary">Forget this browser</button>
+                </form>
+            }
+            <a asp-page="./Disable2fa" class="btn btn-primary">Disable 2FA</a>
+            <a asp-page="./GenerateRecoveryCodes" class="btn btn-primary">Reset recovery codes</a>
+        }
+
+        <h4>Authenticator app</h4>
+        @if (!Model.HasAuthenticator)
+        {
+            <a id="enable-authenticator" asp-page="./EnableAuthenticator" class="btn btn-primary">Add authenticator app</a>
+        }
+        else
+        {
+            <a id="enable-authenticator" asp-page="./EnableAuthenticator" class="btn btn-primary">Set up authenticator app</a>
+            <a id="reset-authenticator" asp-page="./ResetAuthenticator" class="btn btn-primary">Reset authenticator app</a>
+        }
+    }
+    else
+    {
+        <div class="alert alert-danger">
+            <strong>Privacy and cookie policy have not been accepted.</strong>
+            <p>You must accept the policy before you can enable two factor authentication.</p>
+        </div>
+    }
+}
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/Manage/TwoFactorAuthentication.cshtml.cs

@@ -0,0 +1,86 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+
+namespace TightWiki.Areas.Identity.Pages.Account.Manage
+{
+    public class TwoFactorAuthenticationModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly SignInManager<IdentityUser> _signInManager;
+        private readonly ILogger<TwoFactorAuthenticationModel> _logger;
+
+        public TwoFactorAuthenticationModel(
+            UserManager<IdentityUser> userManager, SignInManager<IdentityUser> signInManager, ILogger<TwoFactorAuthenticationModel> logger)
+            : base(signInManager)
+        {
+            _userManager = userManager;
+            _signInManager = signInManager;
+            _logger = logger;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public bool HasAuthenticator { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public int RecoveryCodesLeft { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public bool Is2faEnabled { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public bool IsMachineRemembered { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [TempData]
+        public string StatusMessage { get; set; }
+
+        public async Task<IActionResult> OnGetAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            HasAuthenticator = await _userManager.GetAuthenticatorKeyAsync(user) != null;
+            Is2faEnabled = await _userManager.GetTwoFactorEnabledAsync(user);
+            IsMachineRemembered = await _signInManager.IsTwoFactorClientRememberedAsync(user);
+            RecoveryCodesLeft = await _userManager.CountRecoveryCodesAsync(user);
+
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostAsync()
+        {
+            var user = await _userManager.GetUserAsync(User);
+            if (user == null)
+            {
+                return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
+            }
+
+            await _signInManager.ForgetTwoFactorClientAsync();
+            StatusMessage = "The current browser has been forgotten. When you login again from this browser you will be prompted for your 2fa code.";
+            return RedirectToPage();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/Manage/_ManageNav.cshtml

@@ -0,0 +1,14 @@
+@inject SignInManager<IdentityUser> SignInManager
+@{
+    var hasExternalLogins = (await SignInManager.GetExternalAuthenticationSchemesAsync()).Any();
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+<ul class="nav nav-pills flex-column">
+    <li class="nav-item"><a class="nav-link @ManageNavPages.EmailNavClass(ViewContext)" id="email" asp-page="./Email">Email</a></li>
+    <li class="nav-item"><a class="nav-link @ManageNavPages.ChangePasswordNavClass(ViewContext)" id="change-password" asp-page="./ChangePassword">Password</a></li>
+    @if (hasExternalLogins)
+    {
+        <li id="external-logins" class="nav-item"><a id="external-login" class="nav-link @ManageNavPages.ExternalLoginsNavClass(ViewContext)" asp-page="./ExternalLogins">External logins</a></li>
+    }
+    <li class="nav-item"><a class="nav-link @ManageNavPages.TwoFactorAuthenticationNavClass(ViewContext)" id="two-factor" asp-page="./TwoFactorAuthentication">Two-factor authentication</a></li>
+</ul>

TightWiki/Areas/Identity/Pages/Account/Manage/_StatusMessage.cshtml

@@ -0,0 +1,10 @@
+@model string
+
+@if (!String.IsNullOrEmpty(Model))
+{
+    var statusMessageClass = Model.StartsWith("Error") ? "danger" : "success";
+    <div class="alert alert-@statusMessageClass alert-dismissible" role="alert">
+        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+        @Model
+    </div>
+}

TightWiki/Areas/Identity/Pages/Account/Manage/_ViewImports.cshtml

@@ -0,0 +1 @@
+@using TightWiki.Areas.Identity.Pages.Account.Manage

TightWiki/Areas/Identity/Pages/Account/Register.cshtml

@@ -0,0 +1,161 @@
+@page
+@using TightWiki.Models
+@using System.Text.Encodings.Web
+@model RegisterModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<div class="row">
+    <div class="col-md-8">
+        <form id="registerForm" asp-route-returnUrl="@UrlEncoder.Default.Encode(Model.ReturnUrl ?? "")" method="post">
+            <h4>Create a new account.</h4>
+            <hr />
+
+            <div asp-validation-summary="ModelOnly" class="text-danger" role="alert"></div>
+
+            <div class="form-group row mb-3">
+                <label for="Input.Email" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.Email)</strong></label>
+                <div class="col-sm-10">
+                    @Html.TextBoxFor(m => Model.Input.Email, new { @class = "form-control", autocomplete = "email", placeholder = "name@example.com" })
+                    <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.Email)</div>
+                </div>
+            </div>
+
+            <div class="form-group row mb-3">
+                <label for="Input.Password" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.Password)</strong></label>
+                <div class="col-sm-10">
+                    @Html.PasswordFor(m => Model.Input.Password, new { @class = "form-control", autocomplete = "password", placeholder = "required" })
+                    <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.Password)</div>
+                </div>
+            </div>
+
+            <div class="form-group row mb-3">
+                <label for="Input.ConfirmPassword" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.ConfirmPassword)</strong></label>
+                <div class="col-sm-10">
+                    @Html.PasswordFor(m => Model.Input.ConfirmPassword, new { @class = "form-control", autocomplete = "confirmpassword", placeholder = "required" })
+                    <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.ConfirmPassword)</div>
+                </div>
+            </div>
+
+            <div class="form-group row mb-3">
+                <label for="Input.AccountName" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.AccountName)</strong></label>
+                <div class="col-sm-10">
+                    @Html.TextBoxFor(m => Model.Input.AccountName, new { @class = "form-control", placeholder = "required" })
+                    <small class="form-text text-muted">This account name will be visible publicly.</small>
+                    <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.AccountName)</div>
+                </div>
+            </div>
+
+            <div class="form-group row mb-1">
+                <label for="Input.FirstName" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.FirstName)</strong></label>
+                <div class="col-sm-10">
+                    @Html.TextBoxFor(m => Model.Input.FirstName, new { @class = "form-control", placeholder = "not required" })
+                    <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.FirstName)</div>
+                </div>
+            </div>
+
+            <div class="form-group row mb-3">
+                <label for="Input.Input.LastName" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.LastName)</strong></label>
+                <div class="col-sm-10">
+                    @Html.TextBoxFor(m => Model.Input.LastName, new { @class = "form-control", placeholder = "not required" })
+                    <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.LastName)</div>
+                </div>
+            </div>
+
+            <div class="form-group row mb-1">
+                <label for="Input.Input.Country" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.Country)</strong></label>
+                <div class="col-sm-10">
+                    <select name="Input.Country" id="Input.Country" class="form-control">
+                        <option value="" style="color:#ccc !important;">Select a country</option>
+                        @foreach (var item in Model.Input.Countries)
+                        {
+                            <option value="@item.Value" selected=@(Model.Input.Country == item.Value ? "selected" : null)>
+                                @item.Text
+                            </option>
+                        }
+                    </select>
+                    <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.Country)</div>
+                </div>
+            </div>
+
+            <div class="form-group row mb-1">
+                <label for="Input.Input.Language" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.Language)</strong></label>
+                <div class="col-sm-10">
+                    <select name="Input.Language" id="Input.Language" class="form-control">
+                        <option value="" style="color:#ccc !important;">Select a language</option>
+                        @foreach (var item in Model.Input.Languages)
+                        {
+                            <option value="@item.Value" selected=@(Model.Input.Language == item.Value ? "selected" : null)>
+                                @item.Text
+                            </option>
+                        }
+                    </select>
+                    <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.Language)</div>
+                </div>
+            </div>
+
+            <div class="form-group row mb-1">
+                <label for="Input.Input.TimeZone" class="col-sm-2 col-form-label"><strong>@Html.LabelFor(m => Model.Input.TimeZone)</strong></label>
+                <div class="col-sm-10">
+                    <select name="Input.TimeZone" id="Input.TimeZone" class="form-control">
+                        <option value="" style="color:#ccc !important;">Select a time-zone</option>
+                        @foreach (var item in Model.Input.TimeZones)
+                        {
+                            <option value="@item.Value" selected=@(Model.Input.TimeZone == item.Value ? "selected" : null)>
+                                @item.Text
+                            </option>
+                        }
+                    </select>
+                    <div class="text-danger">@Html.ValidationMessageFor(m => Model.Input.TimeZone)</div>
+                </div>
+            </div>
+
+            <div>
+                <button id="login-submit" type="submit" class="w-100 btn btn-lg btn-primary">Signup</button>
+                <br /><br />
+            </div>
+        </form>
+    </div>
+
+    @if ((Model.ExternalLogins?.Count ?? 0) > 0)
+    {
+        <div class="col-md-4">
+            <section>
+                <h4>Use another service to register.</h4>
+                <hr />
+                <form id="external-account" asp-page="./ExternalLogin" asp-route-returnUrl="@UrlEncoder.Default.Encode(Model.ReturnUrl ?? "")" method="post" class="form-horizontal">
+                    <div>
+                        <p>
+                            @foreach (var provider in Model.ExternalLogins!)
+                            {
+                                if (provider.Name == "Google")
+                                {
+                                    <button type="submit" class="btn w-100 mb-3 d-flex align-items-center" name="provider" value="@provider.Name" title="Log in using your Google account">
+                                        <img src="@GlobalConfiguration.BasePath/images/external/google-signin.svg" alt="Google" class="me-2" />
+                                    </button>
+                                }
+                                else if (provider.Name == "Microsoft")
+                                {
+                                    <button type="submit" class="btn w-100 mb-3 d-flex align-items-center" name="provider" value="@provider.Name" title="Log in using your Microsoft account">
+                                        <img src="@GlobalConfiguration.BasePath/images/external/microsoft-signin.svg" alt="Microsoft" class="me-2" />
+                                    </button>
+                                }
+                                else
+                                {
+                                    <button type="submit" class="btn btn-primary w-100 mb-3" name="provider" value="@provider.Name" title="Log in using your @provider.DisplayName account">
+                                        @provider.DisplayName
+                                    </button>
+                                }
+                            }
+                        </p>
+                    </div>
+                </form>
+            </section>
+        </div>
+    }
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/Register.cshtml.cs

@@ -0,0 +1,250 @@
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.WebUtilities;
+using NTDLS.Helpers;
+using System.ComponentModel.DataAnnotations;
+using System.Security.Claims;
+using System.Text;
+using System.Text.Encodings.Web;
+using TightWiki.Library;
+using TightWiki.Library.Interfaces;
+using TightWiki.Models;
+using TightWiki.Repository;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    public class RegisterModel : PageModelBase
+    {
+        private readonly SignInManager<IdentityUser> _signInManager;
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly IUserStore<IdentityUser> _userStore;
+        private readonly IUserEmailStore<IdentityUser> _emailStore;
+        private readonly ILogger<RegisterModel> _logger;
+        private readonly IWikiEmailSender _emailSender;
+
+        public RegisterModel(
+            UserManager<IdentityUser> userManager,
+            IUserStore<IdentityUser> userStore,
+            SignInManager<IdentityUser> signInManager,
+            ILogger<RegisterModel> logger,
+            IWikiEmailSender emailSender)
+                        : base(signInManager)
+        {
+            _userManager = userManager;
+            _userStore = userStore;
+            _emailStore = GetEmailStore();
+            _signInManager = signInManager;
+            _logger = logger;
+            _emailSender = emailSender;
+        }
+
+        [BindProperty]
+        public InputModel Input { get; set; } = new();
+
+        [BindProperty]
+        public string? ReturnUrl { get; set; }
+
+        public IList<AuthenticationScheme>? ExternalLogins { get; set; }
+
+        public class InputModel
+        {
+            public List<TimeZoneItem> TimeZones { get; set; } = new();
+            public List<CountryItem> Countries { get; set; } = new();
+            public List<LanguageItem> Languages { get; set; } = new();
+
+
+            [Display(Name = "Account Name")]
+            [Required(ErrorMessage = "Account Name is required")]
+            public string AccountName { get; set; } = string.Empty;
+
+            [Display(Name = "First Name")]
+            public string? FirstName { get; set; }
+
+            [Display(Name = "Last Name")]
+            public string? LastName { get; set; } = string.Empty;
+
+            [Display(Name = "Time-Zone")]
+            [Required(ErrorMessage = "TimeZone is required")]
+            public string TimeZone { get; set; } = string.Empty;
+
+            [Display(Name = "Country")]
+            [Required(ErrorMessage = "Country is required")]
+            public string Country { get; set; } = string.Empty;
+
+            [Display(Name = "Language")]
+            [Required(ErrorMessage = "Language is required")]
+            public string Language { get; set; } = string.Empty;
+
+            [Required]
+            [EmailAddress]
+            [Display(Name = "Email")]
+            public string Email { get; set; } = string.Empty;
+
+            [Required]
+            [StringLength(100, ErrorMessage = "The {0} must be at least {2} and at max {1} characters long.", MinimumLength = 6)]
+            [DataType(DataType.Password)]
+            [Display(Name = "Password")]
+            public string Password { get; set; } = string.Empty;
+
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [DataType(DataType.Password)]
+            [Display(Name = "Confirm password")]
+            [Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
+            public string ConfirmPassword { get; set; } = string.Empty;
+        }
+
+        private void PopulateDefaults()
+        {
+            Input.TimeZones = TimeZoneItem.GetAll();
+            Input.Countries = CountryItem.GetAll();
+            Input.Languages = LanguageItem.GetAll();
+
+            var membershipConfig = ConfigurationRepository.GetConfigurationEntryValuesByGroupName("Membership");
+
+            if (string.IsNullOrEmpty(Input.TimeZone))
+                Input.TimeZone = membershipConfig.Value<string>("Default TimeZone").EnsureNotNull();
+
+            if (string.IsNullOrEmpty(Input.Country))
+                Input.Country = membershipConfig.Value<string>("Default Country").EnsureNotNull();
+
+            if (string.IsNullOrEmpty(Input.Language))
+                Input.Language = membershipConfig.Value<string>("Default Language").EnsureNotNull();
+        }
+
+
+        public async Task<IActionResult> OnGetAsync(string? returnUrl = null)
+        {
+            if (GlobalConfiguration.AllowSignup != true)
+            {
+                return Redirect($"{GlobalConfiguration.BasePath}/Identity/Account/RegistrationIsNotAllowed");
+            }
+            PopulateDefaults();
+
+            ReturnUrl = returnUrl;
+            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostAsync(string? returnUrl = null)
+        {
+            if (GlobalConfiguration.AllowSignup != true)
+            {
+                return Redirect($"{GlobalConfiguration.BasePath}/Identity/Account/RegistrationIsNotAllowed");
+            }
+
+            PopulateDefaults();
+
+            if (!ModelState.IsValid)
+            {
+                return Page();
+            }
+
+            if (string.IsNullOrWhiteSpace(Input.AccountName))
+            {
+                ModelState.AddModelError("Input.AccountName", "Account Name is required.");
+                return Page();
+            }
+            else if (UsersRepository.DoesProfileAccountExist(Input.AccountName))
+            {
+                ModelState.AddModelError("Input.AccountName", "Account Name is already in use.");
+                return Page();
+            }
+
+            returnUrl ??= Url.Content("~/");
+            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
+            if (ModelState.IsValid)
+            {
+                var user = new IdentityUser()
+                {
+                    UserName = Input.Email,
+                    Email = Input.Email
+                };
+
+                var result = await _userManager.CreateAsync(user, Input.Password);
+                if (result.Succeeded)
+                {
+                    _logger.LogInformation("User created a new account with password.");
+
+                    var userId = await _userManager.GetUserIdAsync(user);
+
+                    var membershipConfig = ConfigurationRepository.GetConfigurationEntryValuesByGroupName("Membership");
+
+                    UsersRepository.CreateProfile(Guid.Parse(userId), Input.AccountName);
+
+                    var claimsToAdd = new List<Claim>
+                    {
+                        new (ClaimTypes.Role, membershipConfig.Value<string>("Default Signup Role").EnsureNotNull()),
+                        new ("timezone", Input.TimeZone),
+                        new (ClaimTypes.Country, Input.Country),
+                        new ("language", Input.Language),
+                        new ("firstname", Input.FirstName ?? ""),
+                        new ("lastname", Input.LastName ?? ""),
+                    };
+
+                    SecurityRepository.UpsertUserClaims(_userManager, user, claimsToAdd);
+
+                    if (_userManager.Options.SignIn.RequireConfirmedAccount)
+                    {
+                        var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
+                        var encodedCode = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
+
+                        var callbackUrl = Url.Page(
+                            "/Account/ConfirmEmail",
+                            pageHandler: null,
+                            values: new { area = "Identity", userId = userId, code = encodedCode, returnUrl = returnUrl },
+                            protocol: Request.Scheme);
+
+                        var emailTemplate = new StringBuilder(ConfigurationRepository.Get<string>("Membership", "Template: Account Verification Email"));
+                        var basicConfig = ConfigurationRepository.GetConfigurationEntryValuesByGroupName("Basic");
+                        var siteName = basicConfig.Value<string>("Name");
+                        var address = basicConfig.Value<string>("Address");
+                        var profile = UsersRepository.GetAccountProfileByUserId(Guid.Parse(userId));
+
+                        var emailSubject = "Confirm your email";
+                        emailTemplate.Replace("##SUBJECT##", emailSubject);
+                        emailTemplate.Replace("##ACCOUNTCOUNTRY##", profile.Country);
+                        emailTemplate.Replace("##ACCOUNTTIMEZONE##", profile.TimeZone);
+                        emailTemplate.Replace("##ACCOUNTLANGUAGE##", profile.Language);
+                        emailTemplate.Replace("##ACCOUNTEMAIL##", profile.EmailAddress);
+                        emailTemplate.Replace("##ACCOUNTNAME##", profile.AccountName);
+                        emailTemplate.Replace("##PERSONNAME##", $"{profile.FirstName} {profile.LastName}");
+                        emailTemplate.Replace("##CODE##", code);
+                        emailTemplate.Replace("##USERID##", userId);
+                        emailTemplate.Replace("##SITENAME##", siteName);
+                        emailTemplate.Replace("##SITEADDRESS##", address);
+                        emailTemplate.Replace("##CALLBACKURL##", HtmlEncoder.Default.Encode(callbackUrl ?? string.Empty));
+
+                        await _emailSender.SendEmailAsync(Input.Email, emailSubject, emailTemplate.ToString());
+
+                        return RedirectToPage("RegisterConfirmation", new { email = Input.Email, returnUrl = returnUrl });
+                    }
+                    else
+                    {
+                        await _signInManager.SignInAsync(user, isPersistent: false);
+                        return LocalRedirect(returnUrl);
+                    }
+                }
+                foreach (var error in result.Errors)
+                {
+                    ModelState.AddModelError(string.Empty, error.Description);
+                }
+            }
+
+            // If we got this far, something failed, redisplay form
+            return Page();
+        }
+
+        private IUserEmailStore<IdentityUser> GetEmailStore()
+        {
+            if (!_userManager.SupportsUserEmail)
+            {
+                throw new NotSupportedException("The default UI requires a user store with email support.");
+            }
+            return (IUserEmailStore<IdentityUser>)_userStore;
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/RegisterConfirmation.cshtml

@@ -0,0 +1,15 @@
+@page
+@model RegisterConfirmationModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Register confirmation
+</h3>
+
+<p>
+    Please check your email to confirm your account.
+</p>
+
+

TightWiki/Areas/Identity/Pages/Account/RegisterConfirmation.cshtml.cs

@@ -0,0 +1,36 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using TightWiki.Library.Interfaces;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    [AllowAnonymous]
+    public class RegisterConfirmationModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly IWikiEmailSender _emailSender;
+
+        public RegisterConfirmationModel(SignInManager<IdentityUser> signInManager, UserManager<IdentityUser> userManager, IWikiEmailSender emailSender)
+                        : base(signInManager)
+        {
+            _userManager = userManager;
+            _emailSender = emailSender;
+        }
+
+        public IActionResult OnGetAsync(string email, string returnUrl = null)
+        {
+            if (GlobalConfiguration.AllowSignup != true)
+            {
+                return Redirect($"{GlobalConfiguration.BasePath}/Identity/Account/RegistrationIsNotAllowed");
+            }
+
+            return Page();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/RegistrationIsNotAllowed.cshtml

@@ -0,0 +1,12 @@
+@page
+@model RegistrationIsNotAllowedModel
+@{
+    ViewData["Title"] = "";
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Registration is not allowed
+</h3>
+
+<p class="text-danger">Registration is not allowed.</p>

TightWiki/Areas/Identity/Pages/Account/RegistrationIsNotAllowed.cshtml.cs

@@ -0,0 +1,17 @@
+using Microsoft.AspNetCore.Identity;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+
+    public class RegistrationIsNotAllowedModel : PageModelBase
+    {
+
+        public void OnGet()
+        {
+        }
+        public RegistrationIsNotAllowedModel(SignInManager<IdentityUser> signInManager)
+                        : base(signInManager)
+        {
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/ResendEmailConfirmation.cshtml

@@ -0,0 +1,30 @@
+@page
+@model ResendEmailConfirmationModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Resend email confirmation
+</h3>
+
+<p>Enter your email.</p>
+<hr />
+
+<div class="row">
+    <div class="col-md-4">
+        <form method="post">
+            <div asp-validation-summary="All" class="text-danger" role="alert"></div>
+            <div class="form-floating mb-3">
+                <input asp-for="Input.Email" class="form-control" aria-required="true" placeholder="name@example.com" />
+                <label asp-for="Input.Email" class="form-label"></label>
+                <span asp-validation-for="Input.Email" class="text-danger"></span>
+            </div>
+            <button type="submit" class="w-100 btn btn-lg btn-primary">Resend</button>
+        </form>
+    </div>
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/ResendEmailConfirmation.cshtml.cs

@@ -0,0 +1,115 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.WebUtilities;
+using System.ComponentModel.DataAnnotations;
+using System.Text;
+using System.Text.Encodings.Web;
+using TightWiki.Library.Interfaces;
+using TightWiki.Models;
+using TightWiki.Repository;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    [AllowAnonymous]
+    public class ResendEmailConfirmationModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+        private readonly IWikiEmailSender _emailSender;
+
+        public ResendEmailConfirmationModel(SignInManager<IdentityUser> signInManager, UserManager<IdentityUser> userManager, IWikiEmailSender emailSender)
+                        : base(signInManager)
+        {
+            _userManager = userManager;
+            _emailSender = emailSender;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [EmailAddress]
+            public string Email { get; set; }
+        }
+
+        public IActionResult OnGet()
+        {
+            if (GlobalConfiguration.AllowSignup != true)
+            {
+                return Redirect($"{GlobalConfiguration.BasePath}/Identity/Account/RegistrationIsNotAllowed");
+            }
+            return Page();
+        }
+
+        public async Task<IActionResult> OnPostAsync()
+        {
+            if (GlobalConfiguration.AllowSignup != true)
+            {
+                return Redirect($"{GlobalConfiguration.BasePath}/Identity/Account/RegistrationIsNotAllowed");
+            }
+            if (!ModelState.IsValid)
+            {
+                return Page();
+            }
+
+            var user = await _userManager.FindByEmailAsync(Input.Email);
+            if (user == null)
+            {
+                ModelState.AddModelError(string.Empty, "Verification email sent. Please check your email.");
+                return Page();
+            }
+
+            var userId = await _userManager.GetUserIdAsync(user);
+            var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
+            var encodedCode = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
+            var callbackUrl = Url.Page(
+                "/Account/ConfirmEmail",
+                pageHandler: null,
+                values: new { userId = userId, code = encodedCode },
+                protocol: Request.Scheme);
+
+            var emailTemplate = new StringBuilder(ConfigurationRepository.Get<string>("Membership", "Template: Account Verification Email"));
+            var basicConfig = ConfigurationRepository.GetConfigurationEntryValuesByGroupName("Basic");
+            var siteName = basicConfig.Value<string>("Name");
+            var address = basicConfig.Value<string>("Address");
+            var profile = UsersRepository.GetAccountProfileByUserId(Guid.Parse(userId));
+
+            var emailSubject = "Confirm your email";
+            emailTemplate.Replace("##SUBJECT##", emailSubject);
+            emailTemplate.Replace("##ACCOUNTCOUNTRY##", profile.Country);
+            emailTemplate.Replace("##ACCOUNTTIMEZONE##", profile.TimeZone);
+            emailTemplate.Replace("##ACCOUNTLANGUAGE##", profile.Language);
+            emailTemplate.Replace("##ACCOUNTEMAIL##", profile.EmailAddress);
+            emailTemplate.Replace("##ACCOUNTNAME##", profile.AccountName);
+            emailTemplate.Replace("##PERSONNAME##", $"{profile.FirstName} {profile.LastName}");
+            emailTemplate.Replace("##CODE##", code);
+            emailTemplate.Replace("##USERID##", userId);
+            emailTemplate.Replace("##SITENAME##", siteName);
+            emailTemplate.Replace("##SITEADDRESS##", address);
+            emailTemplate.Replace("##CALLBACKURL##", HtmlEncoder.Default.Encode(callbackUrl));
+
+            await _emailSender.SendEmailAsync(Input.Email, emailSubject, emailTemplate.ToString());
+
+            ModelState.AddModelError(string.Empty, "Verification email sent. Please check your email.");
+            return Page();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/ResetPassword.cshtml

@@ -0,0 +1,41 @@
+@page
+@model ResetPasswordModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Reset password
+</h3>
+
+<p>Reset your password.</p>
+<hr />
+
+<div class="row">
+    <div class="col-md-4">
+        <form method="post">
+            <div asp-validation-summary="ModelOnly" class="text-danger" role="alert"></div>
+            <input asp-for="Input.Code" type="hidden" />
+            <div class="form-floating mb-3">
+                <input asp-for="Input.Email" class="form-control" autocomplete="username" aria-required="true" placeholder="name@example.com" />
+                <label asp-for="Input.Email" class="form-label"></label>
+                <span asp-validation-for="Input.Email" class="text-danger"></span>
+            </div>
+            <div class="form-floating mb-3">
+                <input asp-for="Input.Password" class="form-control" autocomplete="new-password" aria-required="true" placeholder="Please enter your password." />
+                <label asp-for="Input.Password" class="form-label"></label>
+                <span asp-validation-for="Input.Password" class="text-danger"></span>
+            </div>
+            <div class="form-floating mb-3">
+                <input asp-for="Input.ConfirmPassword" class="form-control" autocomplete="new-password" aria-required="true" placeholder="Please confirm your password." />
+                <label asp-for="Input.ConfirmPassword" class="form-label"></label>
+                <span asp-validation-for="Input.ConfirmPassword" class="text-danger"></span>
+            </div>
+            <button type="submit" class="w-100 btn btn-lg btn-primary">Reset</button>
+        </form>
+    </div>
+</div>
+
+@section Scripts {
+    <partial name="_ValidationScriptsPartial" />
+}

TightWiki/Areas/Identity/Pages/Account/ResetPassword.cshtml.cs

@@ -0,0 +1,115 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.WebUtilities;
+using System.ComponentModel.DataAnnotations;
+using System.Text;
+using TightWiki.Models;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    public class ResetPasswordModel : PageModelBase
+    {
+        private readonly UserManager<IdentityUser> _userManager;
+
+        public ResetPasswordModel(SignInManager<IdentityUser> signInManager, UserManager<IdentityUser> userManager)
+                        : base(signInManager)
+        {
+            _userManager = userManager;
+        }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        [BindProperty]
+        public InputModel Input { get; set; }
+
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public class InputModel
+        {
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [EmailAddress]
+            public string Email { get; set; }
+
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            [StringLength(100, ErrorMessage = "The {0} must be at least {2} and at max {1} characters long.", MinimumLength = 6)]
+            [DataType(DataType.Password)]
+            public string Password { get; set; }
+
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [DataType(DataType.Password)]
+            [Display(Name = "Confirm password")]
+            [Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
+            public string ConfirmPassword { get; set; }
+
+            /// <summary>
+            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+            ///     directly from your code. This API may change or be removed in future releases.
+            /// </summary>
+            [Required]
+            public string Code { get; set; }
+
+        }
+
+        public IActionResult OnGet(string code = null)
+        {
+            if (code == null)
+            {
+                return BadRequest("A code must be supplied for password reset.");
+            }
+            else
+            {
+                Input = new InputModel
+                {
+                    Code = Encoding.UTF8.GetString(WebEncoders.Base64UrlDecode(code))
+                };
+                return Page();
+            }
+        }
+
+        public async Task<IActionResult> OnPostAsync()
+        {
+            if (!ModelState.IsValid)
+            {
+                return Page();
+            }
+
+            var user = await _userManager.FindByEmailAsync(Input.Email);
+            if (user == null)
+            {
+                // Don't reveal that the user does not exist
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/ResetPasswordConfirmation");
+            }
+
+            var result = await _userManager.ResetPasswordAsync(user, Input.Code, Input.Password);
+            if (result.Succeeded)
+            {
+                return RedirectToPage($"{GlobalConfiguration.BasePath}/Identity/ResetPasswordConfirmation");
+            }
+
+            foreach (var error in result.Errors)
+            {
+                ModelState.AddModelError(string.Empty, error.Description);
+            }
+            return Page();
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/ResetPasswordConfirmation.cshtml

@@ -0,0 +1,13 @@
+@page
+@model ResetPasswordConfirmationModel
+@{
+    var sessionState = ViewData["SessionState"] as TightWiki.SessionState ?? throw new Exception("Wiki State Context cannot be null.");
+}
+
+<h3>
+    Reset password confirmation
+</h3>
+
+<p>
+    Your password has been reset. Please <a asp-page="./Login">click here to log in</a>.
+</p>

TightWiki/Areas/Identity/Pages/Account/ResetPasswordConfirmation.cshtml.cs

@@ -0,0 +1,32 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+#nullable disable
+
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity;
+
+namespace TightWiki.Areas.Identity.Pages.Account
+{
+    /// <summary>
+    ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+    ///     directly from your code. This API may change or be removed in future releases.
+    /// </summary>
+    [AllowAnonymous]
+    public class ResetPasswordConfirmationModel : PageModelBase
+    {
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public void OnGet()
+        {
+        }
+
+        public ResetPasswordConfirmationModel(SignInManager<IdentityUser> signInManager)
+
+                        : base(signInManager)
+        {
+
+        }
+    }
+}

TightWiki/Areas/Identity/Pages/Account/_StatusMessage.cshtml

@@ -0,0 +1,10 @@
+@model string
+
+@if (!String.IsNullOrEmpty(Model))
+{
+    var statusMessageClass = Model.StartsWith("Error") ? "danger" : "success";
+    <div class="alert alert-@statusMessageClass alert-dismissible" role="alert">
+        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+        @Model
+    </div>
+}

TightWiki/Areas/Identity/Pages/Account/_ViewImports.cshtml

@@ -0,0 +1 @@
+@using TightWiki.Areas.Identity.Pages.Account