Program.cs

using BlogSystem.Backend.Data;
using BlogSystem.Backend.Entities;
using BlogSystem.Backend.Mappings;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;

var builder = WebApplication.CreateBuilder(args);

// --- 1. DATABASE CONFIGURATION ---
// Get connection string from appsettings.json
var connectionString = builder.Configuration.GetConnectionString("DefaultConnection");

// Register ApplicationDbContext with SQL Server
builder.Services.AddDbContext<ApplicationDbContext>(options =>
    options.UseSqlServer(connectionString));

// --- 2. IDENTITY CONFIGURATION ---
// Register Identity with your custom ApplicationUser and Roles
builder.Services.AddIdentityApiEndpoints<ApplicationUser>()
    .AddRoles<IdentityRole>()
    .AddEntityFrameworkStores<ApplicationDbContext>();

builder.Services.AddControllers();
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();
builder.Services.AddAutoMapper(M => M.AddProfile(new MappingProfile()));

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

// --- 3. IDENTITY MIDDLEWARE ---
// This enables the login/identity endpoints in the API
app.MapIdentityApi<ApplicationUser>();

app.UseAuthorization();
app.MapControllers();

app.Run();