Program.cs

using EmployeeManagementSystem.Data;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.IdentityModel.Tokens;
using EmployeeManagementSystem.Middleware;
using EmployeeManagementSystem.Models;
using EmployeeManagementSystem.Services;
using System.Text;
using EmployeeManagementSystem.Utilities;
using EmployeeManagementSystem.Repositories;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddAutoMapper(typeof(Program));

builder.Services.AddScoped<IEmployeeService, EmployeeService>();
builder.Services.AddScoped<IEmployeeRepository, EmployeeRepository>();
builder.Services.AddScoped<IAttendanceRepository, AttendanceRepository>();
builder.Services.AddScoped<IDepartmentRepository, DepartmentRepository>();
builder.Services.AddScoped<IAttendanceService, AttendanceService>();
builder.Services.AddScoped<IDepartmentService, DepartmentService>();
builder.Services.AddScoped<ILeaveRequestRepository, LeaveRequestRepository>();
builder.Services.AddScoped<ILeaveRequestService, LeaveRequestService>();
builder.Services.AddScoped<IPayrollRepository, PayrollRepository>();
builder.Services.AddScoped<IPayrollService, PayrollService>();
builder.Services.AddScoped<IPerformanceReviewRepository, PerformanceReviewRepository>();
builder.Services.AddScoped<IPerformanceReviewService, PerformanceReviewService>();
builder.Services.AddScoped<IReportsService, ReportsService>();
builder.Services.AddScoped<IAuthService, AuthService>();
builder.Services.AddScoped<IUserRepository, UserRepository>();


builder.Configuration.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);

string _GetConnStringName = builder.Configuration.GetConnectionString("DefaultConnectionMySQL") ?? throw new InvalidOperationException("Connection string 'DefaultConnectionMySQL' is missing.");
builder.Services.AddDbContextPool<ApplicationDbContext>(options => options.UseMySql(_GetConnStringName, ServerVersion.AutoDetect(_GetConnStringName)));

var jwtSettings = builder.Configuration.GetSection("JwtSettings");
var secretKey = jwtSettings["Secret"];

if (string.IsNullOrEmpty(secretKey))
{
    throw new Exception("JWT Secret key is missing in configuration.");
}

builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
    .AddJwtBearer(options =>
    {
        options.TokenValidationParameters = new TokenValidationParameters
        {
            ValidateIssuer = true,
            ValidateAudience = true,
            ValidateLifetime = true,
            ValidateIssuerSigningKey = true,
            ValidIssuer = jwtSettings["Issuer"],
            ValidAudience = jwtSettings["Audience"],
            IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(secretKey))
        };
    });

builder.Services.Configure<IdentityOptions>(options =>
{
    options.Password.RequireDigit = false;
    options.Password.RequireLowercase = false;
    options.Password.RequireUppercase = false;
    options.Password.RequireNonAlphanumeric = false;
    options.Password.RequiredLength = 6;
});

builder.Services.AddControllers();

var app = builder.Build();

app.UseMiddleware<JwtMiddleware>();
app.UseRouting();
app.UseAuthentication();
app.UseAuthorization();
app.MapControllers();

app.Run();