Program.cs

using Blog.Data;
using Blog.Models;
using Blog.Services;
using Blog.Services.Interfaces;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Identity.UI.Services;
using Microsoft.EntityFrameworkCore;
using Microsoft.OpenApi.Models;
using System.Reflection;

var builder = WebApplication.CreateBuilder(args);


// Add services to the container.
var connectionString = DataUtility.GetConnectionString(builder.Configuration) ?? throw new InvalidOperationException("Connection string 'DefaultConnection' not found.");

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

builder.Services.AddIdentity<BlogUser, IdentityRole>(options => options.SignIn.RequireConfirmedAccount = true) /*make sure to use AddIdentity*/
                .AddDefaultUI()
                .AddDefaultTokenProviders()
                .AddEntityFrameworkStores<ApplicationDbContext>(); /*one line of code*/


builder.Services.AddControllersWithViews();  

// Custom Services
builder.Services.AddScoped<IBlogServices, BlogServices>();  
builder.Services.AddScoped<IImageService, ImageService>();
builder.Services.AddScoped<IEmailSender, EmailService>();
builder.Services.Configure<EmailSettings>(builder.Configuration.GetSection("EmailSettings"));

builder.Services.AddMvc();
builder.Services.AddControllersWithViews();


builder.Services.AddCors(obj =>
{
    obj.AddPolicy("DefaultPolicy",
        builder => builder.AllowAnyOrigin()
                          .AllowAnyMethod()
                          .AllowAnyHeader());
});

// Add API configs
builder.Services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1", new OpenApiInfo
    {
        Title = "Bits And Bytes",
        Version = "v1",
        Description = "A Blog",
        Contact = new OpenApiContact
        {
            Name = "Tom Farrell",
            Email = "tjf7101@gmail.com",
            Url = new Uri("https://blog-production-65b3.up.railway.app/")
        }
    });

    var xmlFileName = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
    c.IncludeXmlComments(Path.Combine(AppContext.BaseDirectory, xmlFileName));
});


var app = builder.Build();
app.UseCors("DefaultPolicy");




var scope = app.Services.CreateScope();



await DataUtility.ManageDataAsync(scope.ServiceProvider);



// 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();
}

// Add Swagger UI Config
app.UseSwagger();
app.UseSwaggerUI(c =>
{
    c.SwaggerEndpoint("/swagger/v1/swagger.json", "PublicAPI v1");
    c.InjectStylesheet("/css/swagger.css");
    c.InjectJavascript("/js/swagger.js:");

    c.DocumentTitle = "Add your document name here";
});


app.UseHttpsRedirection();
app.UseStaticFiles();

app.UseHttpsRedirection();
app.UseStaticFiles();

app.UseRouting();


app.UseAuthorization();

// Custom BlogPost Details Route
app.MapControllerRoute(
    name: "custom",
    pattern: "Content/{slug}",
    defaults: new {controller = "BlogPosts", action = "Details"}
    );

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

app.Run();