Inital project setup

OpenArchival.Blazor/Components/Account/Pages/Manage/Email.razor

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+@page "/Account/Manage/Email"
+
+@using System.ComponentModel.DataAnnotations
+@using System.Text
+@using System.Text.Encodings.Web
+@using Microsoft.AspNetCore.Identity
+@using Microsoft.AspNetCore.WebUtilities
+@using OpenArchival.Blazor.Data
+
+@inject UserManager<ApplicationUser> UserManager
+@inject IEmailSender<ApplicationUser> EmailSender
+@inject IdentityUserAccessor UserAccessor
+@inject NavigationManager NavigationManager
+
+<PageTitle>Manage email</PageTitle>
+
+<MudText Typo="Typo.h6" GutterBottom="true">Manage email</MudText>
+
+<StatusMessage Message="@message" />
+
+<form @onsubmit="OnSendEmailVerificationAsync" @formname="send-verification" id="send-verification-form" method="post">
+    <AntiforgeryToken />
+</form>
+<EditForm Model="Input" FormName="change-email" OnValidSubmit="OnValidSubmitAsync" method="post">
+    <DataAnnotationsValidator />
+
+    <MudGrid>
+
+        @if (isEmailConfirmed)
+        {
+            <MudItem md="12">
+                <MudStaticTextField Value="@email" Label="Email" Placeholder="Please enter your email." Disabled="true" AdornmentIcon="Icons.Material.Filled.Check" AdornmentColor="Color.Success" />
+            </MudItem>
+        }
+        else
+        {
+            <MudItem md="12">
+                <MudStaticTextField Value="@email" Label="Email" Placeholder="Please enter your email." Disabled="true" />
+            </MudItem>
+            <MudItem md="12">
+                <MudStaticButton Variant="Variant.Filled" Color="Color.Primary" FullWidth="true" FormAction="FormAction.Submit">Send verification email</MudStaticButton>
+            </MudItem>
+        }
+
+        <MudItem md="12">
+            <MudStaticTextField @bind-Value="@Input.NewEmail" For="@(() => Input.NewEmail)" UserAttributes="@(new() { { "autocomplete", "email" }, { "aria-required", "true" } } )" Label="New Email" HelperText="Please enter new email." />
+        </MudItem>
+
+        <MudItem md="12">
+            <MudStaticButton Variant="Variant.Filled" Color="Color.Primary" FullWidth="true" FormAction="FormAction.Submit">Change email</MudStaticButton>
+        </MudItem>
+    </MudGrid>
+</EditForm>
+
+@code {
+    private string? message;
+    private ApplicationUser user = default!;
+    private string? email;
+    private bool isEmailConfirmed;
+
+    [CascadingParameter]
+    private HttpContext HttpContext { get; set; } = default!;
+
+    [SupplyParameterFromForm(FormName = "change-email")]
+    private InputModel Input { get; set; } = new();
+
+    protected override async Task OnInitializedAsync()
+    {
+        user = await UserAccessor.GetRequiredUserAsync(HttpContext);
+        email = await UserManager.GetEmailAsync(user);
+        isEmailConfirmed = await UserManager.IsEmailConfirmedAsync(user);
+
+        Input.NewEmail ??= email;
+    }
+
+    private async Task OnValidSubmitAsync()
+    {
+        if (Input.NewEmail is null || Input.NewEmail == email)
+        {
+            message = "Your email is unchanged.";
+            return;
+        }
+
+        var userId = await UserManager.GetUserIdAsync(user);
+        var code = await UserManager.GenerateChangeEmailTokenAsync(user, Input.NewEmail);
+        code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
+        var callbackUrl = NavigationManager.GetUriWithQueryParameters(
+            NavigationManager.ToAbsoluteUri("Account/ConfirmEmailChange").AbsoluteUri,
+            new Dictionary<string, object?> { ["userId"] = userId, ["email"] = Input.NewEmail, ["code"] = code });
+
+        await EmailSender.SendConfirmationLinkAsync(user, Input.NewEmail, HtmlEncoder.Default.Encode(callbackUrl));
+
+        message = "Confirmation link to change email sent. Please check your email.";
+    }
+
+    private async Task OnSendEmailVerificationAsync()
+    {
+        if (email is null)
+        {
+            return;
+        }
+
+        var userId = await UserManager.GetUserIdAsync(user);
+        var code = await UserManager.GenerateEmailConfirmationTokenAsync(user);
+        code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
+        var callbackUrl = NavigationManager.GetUriWithQueryParameters(
+            NavigationManager.ToAbsoluteUri("Account/ConfirmEmail").AbsoluteUri,
+            new Dictionary<string, object?> { ["userId"] = userId, ["code"] = code });
+
+        await EmailSender.SendConfirmationLinkAsync(user, email, HtmlEncoder.Default.Encode(callbackUrl));
+
+        message = "Verification email sent. Please check your email.";
+    }
+
+    private sealed class InputModel
+    {
+        [Required]
+        [EmailAddress]
+        [Display(Name = "New email")]
+        public string? NewEmail { get; set; }
+    }
+}