Program.cs

using BlogProject.Data;
using BlogProject.Helpers;
using BlogProject.Models;
using BlogProject.Services;
using BlogProject.View_Models;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Identity.UI.Services;
using Microsoft.EntityFrameworkCore;
using System.Configuration;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container
//var connectionString = configuration.GetConnectionString("DefaultConnection"); ?? throw new InvalidOperationException("Connection string 'DefaultConnection' not found.");
//var connectionString = configuration.GetSection("pgSettings")["pgConnection"];
var connectionString = ConnectionHelper.GetConnectionString(builder.Configuration);

builder.Services.AddDbContext<ApplicationDbContext>(options => options.UseNpgsql(connectionString));
builder.Services.AddDatabaseDeveloperPageExceptionFilter();

builder.Services.AddDefaultIdentity<BlogUser>(options => options.SignIn.RequireConfirmedAccount = true)
                .AddDefaultUI() /* LEARN : Is this redundant? doesnt AddDefaultIdentity include the default UI?*/
                .AddRoles<IdentityRole>()
                .AddDefaultTokenProviders()
                .AddEntityFrameworkStores<ApplicationDbContext>();

builder.Services.AddControllersWithViews();

builder.Services.AddRazorPages();


// Register Custom Services
builder.Services.AddScoped<IImageService, BasicImageService>();
builder.Services.AddScoped<ISlugService, BasicSlugService>();
builder.Services.AddScoped<BlogSearchService>();
builder.Services.AddScoped<DataService>();

// Register preconfigured instance of MailSettings and EmailService
builder.Services.AddScoped<EmailService>();
builder.Services.Configure<MailSettings>(builder.Configuration.GetSection("MailSettings"));

var app = builder.Build();
var scope = app.Services.CreateScope();

//await DataHelper.ManageDataAsync(scope.ServiceProvider);


//// LEARN : Explain this code. Some of it seems to be redundant from DataHelper.cs
/// TODO : DELETE this section
////using (var scope = app.Services.CreateScope())
////{
////    var services = scope.ServiceProvider;
////    var context = services.GetRequiredService<ApplicationDbContext>();

////    // Apply any pending migrations and create the database if it doesn't exist
////    await context.Database.MigrateAsync();

////    // Run additional data management tasks
////    await DataHelper.ManageDataAsync(scope.ServiceProvider);
////}

var dataService = scope.ServiceProvider.GetRequiredService<DataService>();
//// COMMIT 26327f4 : Jan 2, 2025
// Get access to registered DataService
//var dataService = app.Services.CreateScope()
//                     .ServiceProvider.GetRequiredService<DataService>();

// Run initialization ManageDataAsync()
await dataService.ManageDataAsync();


// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseMigrationsEndPoint();
}
else
{
    app.UseExceptionHandler("/Home/Error");
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}

app.UseStatusCodePagesWithReExecute("/Home/HandleError/{0}");

// BLOG : Commented out the HTTPS redirection because Railway handles HTTPS redirections externally, and the UseHttpRedirection was causing errors on Railway deployment. This is likely because I am using a custom domain with Railway, and Railway provides its own SSL termination.
// TODO : Shoud I put this in the if (app.Environment.IsDevelopment()) block above?
//app.UseHttpsRedirection();

app.UseStaticFiles();

app.UseRouting();

app.UseAuthorization();

// TODO : Check if SlugRoute is configured correctly
// Create new MapControllerRoute to supersede default route using the Slug, sometimes refered to a "Vanity URL", which improves SEO
app.MapControllerRoute(
    name: "SlugRoute",
    pattern: "BlogPosts/UrlFriendly/{slug}",
    defaults: new { controller = "Posts", action = "Details" });

app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Home}/{action=Index}/{id?}");

app.MapRazorPages();

app.Run();