Program.cs

using System;
using System.Text;
using DotNetEnv;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.EntityFrameworkCore;
using Microsoft.IdentityModel.Tokens;
using MotelAPI.Configurations;
using MotelAPI.Services;

Env.Load();

var builder = WebApplication.CreateBuilder(args);

var dbPassword = Environment.GetEnvironmentVariable("DB_PASSWORD");
var secretKey = Environment.GetEnvironmentVariable("SECRET_KEY");

if (string.IsNullOrEmpty(dbPassword))
{
    throw new InvalidOperationException("A senha do banco de dados não foi fornecida.");
}

if (string.IsNullOrEmpty(secretKey))
{
    throw new InvalidOperationException("A chave secreta não foi fornecida.");
}

var connectionString = builder.Configuration.GetConnectionString("DefaultConnection");

if (string.IsNullOrEmpty(connectionString))
{
    throw new InvalidOperationException("A string de conexão não foi fornecida.");
}

connectionString = connectionString.Replace("#{DB_PASSWORD}#", dbPassword);

builder.Services.AddDbContext<MotelAPI.Data.MotelDbContext>(options =>
    options.UseMySql(connectionString, ServerVersion.AutoDetect(connectionString))
);

builder.Services.Configure<JwtSettings>(builder.Configuration.GetSection("JwtSettings"));
builder.Services.AddScoped<IReservationService, ReservationService>();
builder.Services.AddScoped<FinanceService>();
builder.Services.AddScoped<AuthService>();

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

builder.Services.AddControllers();
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen(options =>
{
    options.SwaggerDoc(
        "v1",
        new Microsoft.OpenApi.Models.OpenApiInfo
        {
            Title = "Motel API",
            Version = "v1",
            Description = "API para gerenciamento de reservas e motéis.",
        }
    );
});

var app = builder.Build();

if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI(c =>
    {
        c.SwaggerEndpoint("/swagger/v1/swagger.json", "Motel API v1");
        c.RoutePrefix = string.Empty;
    });
}

app.UseHttpsRedirection();

app.UseAuthentication();
app.UseAuthorization();

app.MapControllers();

app.Run();