ApplianceRepair/Program.cs

using ApplianceRepair;
using ApplianceRepair.Components;
using Microsoft.EntityFrameworkCore;
using ApplianceRepair.Components.Account;
using Microsoft.AspNetCore.Components.Authorization;
using Microsoft.AspNetCore.Identity;

var builder = WebApplication.CreateBuilder(args);
var connectionString = builder.Configuration.GetConnectionString("DefaultConnection") ?? throw new InvalidOperationException("Connection string 'DefaultConnection' not found.");

// Add services to the container.
builder.Services.AddRazorComponents()
    .AddInteractiveServerComponents();

builder.Services.AddDbContext<DatabaseContext>(options =>
    options.UseSqlite(connectionString));

builder.Services.AddMemoryCache();
builder.Services.AddLogging();

builder.Services.AddScoped<BusinessConfigReader>();
builder.Services.AddScoped<ContentCardReader>();
builder.Services.AddScoped<HomePageReader>();
builder.Services.AddScoped<RepairRequestReader>();
builder.Services.AddScoped<RepairRequestMediaReader>();

builder.Services.AddCascadingAuthenticationState();

builder.Services.AddScoped<IdentityUserAccessor>();

builder.Services.AddScoped<IdentityRedirectManager>();

builder.Services.AddScoped<AuthenticationStateProvider, IdentityRevalidatingAuthenticationStateProvider>();

builder.Services.AddAuthentication(options =>
{
    options.DefaultScheme = IdentityConstants.ApplicationScheme;
    options.DefaultSignInScheme = IdentityConstants.ExternalScheme;
})
.AddIdentityCookies();

builder.Services.AddIdentityCore<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = true)
    .AddRoles<IdentityRole>()
    .AddEntityFrameworkStores<DatabaseContext>()
    .AddSignInManager()
    .AddDefaultTokenProviders();

builder.Services.AddServerSideBlazor()
    .AddHubOptions(options =>
    {
        options.MaximumReceiveMessageSize = 10 * 1024 * 1024; // 10MB
    });

builder.Services.AddSingleton<IEmailSender<IdentityUser>, IdentityNoOpEmailSender>();

var app = builder.Build();

using (var scope = app.Services.CreateScope())
{
    var services = scope.ServiceProvider;
    try
    {
        var context = services.GetRequiredService<DatabaseContext>();

        await context.Database.MigrateAsync();

        await DatabaseContext.Initialize(context);

        var roleManager = scope.ServiceProvider.GetRequiredService<RoleManager<IdentityRole>>();
        var userManager = scope.ServiceProvider.GetRequiredService<UserManager<IdentityUser>>();
        var logger = scope.ServiceProvider.GetRequiredService<ILogger<Program>>();

        if (!await roleManager.RoleExistsAsync("Admin"))
        {
            await roleManager.CreateAsync(new IdentityRole("Admin"));
        }

        var domain = builder.Configuration.GetValue<string>("SiteDomain");
        var adminEmail = $"admin@{domain}";
        var adminUser = await userManager.FindByEmailAsync(adminEmail);

        if (adminUser == null)
        {
            adminUser = new IdentityUser
            {
                UserName = adminEmail,
                Email = adminEmail,
                EmailConfirmed = true
            };

            const string chars = "ABCDEFGHJKLMNOPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz0123456789!@#$%^&*?";
            var random = new Random();
            var pass = new string(Enumerable.Repeat(chars, 16)
                .Select(s => s[random.Next(s.Length)]).ToArray()) + "1aA!";
            var result = await userManager.CreateAsync(adminUser, pass);

            if (result.Succeeded)
            {
                await userManager.AddToRoleAsync(adminUser, "Admin");

                logger.LogCritical("****************************************************");
                logger.LogCritical($"ADMIN USER CREATED. Email: {adminEmail}");
                logger.LogCritical($"TEMPORARY PASSWORD: {pass}");
                logger.LogCritical("****************************************************");
            }
        }
    }
    catch (Exception ex)
    {
        var logger = services.GetRequiredService<ILogger<Program>>();
        logger.LogError(ex, "An error occurred while migrating or seeding the database.");
    }
}

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error", createScopeForErrors: true);
}

app.UseAntiforgery();

app.MapStaticAssets();
app.MapRazorComponents<App>()
    .AddInteractiveServerRenderMode();

app.MapAdditionalIdentityEndpoints();;

app.Run();