QrRapido/Program.cs

using Microsoft.AspNetCore.Authentication.Cookies;
using Microsoft.AspNetCore.Authentication.Google;
using Microsoft.AspNetCore.Authentication.MicrosoftAccount;
using Microsoft.AspNetCore.Localization;
using Microsoft.AspNetCore.StaticFiles;
using Microsoft.Extensions.Caching.Distributed;
using Microsoft.Extensions.Localization;
using MongoDB.Driver;
using QRRapidoApp.Data;
using QRRapidoApp.Middleware;
using QRRapidoApp.Services;
using QRRapidoApp.Services.Monitoring;
using QRRapidoApp.Services.HealthChecks;
using StackExchange.Redis;
using Stripe;
using System.Globalization;
using Serilog;
using Serilog.Events;
using Serilog.Sinks.SystemConsole.Themes;

var builder = WebApplication.CreateBuilder(args);

// Configure Serilog
Log.Logger = new LoggerConfiguration()
    .ReadFrom.Configuration(builder.Configuration)
    .Enrich.FromLogContext()
    .Enrich.WithEnvironmentName()
    .Enrich.WithProcessId()
    .Enrich.WithThreadId()
    .Enrich.WithProperty("ApplicationName", builder.Configuration["ApplicationName"] ?? "QRRapido")
    .WriteTo.Async(a => a.Console(
        outputTemplate: "[{Timestamp:HH:mm:ss} {Level:u3}] {Message:lj} {Properties:j}{NewLine}{Exception}",
        theme: AnsiConsoleTheme.Code))
    .WriteTo.Async(a => {
        var seqUrl = builder.Configuration["Serilog:SeqUrl"];
        var apiKey = builder.Configuration["Serilog:ApiKey"];
        
        if (!string.IsNullOrEmpty(seqUrl))
        {
            try
            {
                // Temporarily skip Seq until packages are installed
                Console.WriteLine($"Seq configured for: {seqUrl}");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Failed to configure Seq sink: {ex.Message}");
                // Continue without Seq - will still log to console
            }
        }
    })
    .CreateLogger();

builder.Host.UseSerilog();

// Add services to the container
builder.Services.AddControllersWithViews();

// Add HttpClient for health checks
builder.Services.AddHttpClient();

// MongoDB Configuration - optional for development
var mongoConnectionString = builder.Configuration.GetConnectionString("MongoDB");
if (!string.IsNullOrEmpty(mongoConnectionString))
{
    try
    {
        builder.Services.AddSingleton<IMongoClient>(serviceProvider =>
        {
            return new MongoClient(mongoConnectionString);
        });
        builder.Services.AddScoped<MongoDbContext>();
    }
    catch
    {
        // MongoDB not available - services will handle gracefully
        builder.Services.AddScoped<MongoDbContext>();
    }
}
else
{
    // Development mode without MongoDB
    builder.Services.AddScoped<MongoDbContext>();
}

// Cache Configuration - use Redis if available, otherwise memory cache
var redisConnectionString = builder.Configuration.GetConnectionString("Redis");
if (!string.IsNullOrEmpty(redisConnectionString))
{
    try
    {
        builder.Services.AddStackExchangeRedisCache(options =>
        {
            options.Configuration = redisConnectionString;
        });
    }
    catch
    {
        // Fallback to memory cache if Redis fails
        builder.Services.AddMemoryCache();
        builder.Services.AddSingleton<IDistributedCache, QRRapidoApp.Services.MemoryDistributedCacheWrapper>();
    }
}
else
{
    // Use memory cache when Redis is not configured
    builder.Services.AddMemoryCache();
    builder.Services.AddSingleton<IDistributedCache, MemoryDistributedCacheWrapper>();
}

// Authentication Configuration
builder.Services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
    .AddCookie(options =>
    {
        options.LoginPath = "/Account/Login";
        options.LogoutPath = "/Account/Logout";
        options.ExpireTimeSpan = TimeSpan.FromDays(30);
        options.SlidingExpiration = true;
    })
    .AddGoogle(GoogleDefaults.AuthenticationScheme, options =>
    {
        options.ClientId = builder.Configuration["Authentication:Google:ClientId"];
        options.ClientSecret = builder.Configuration["Authentication:Google:ClientSecret"];
    })
    .AddMicrosoftAccount(MicrosoftAccountDefaults.AuthenticationScheme, options =>
    {
        options.ClientId = builder.Configuration["Authentication:Microsoft:ClientId"];
        options.ClientSecret = builder.Configuration["Authentication:Microsoft:ClientSecret"];
    });

// Stripe Configuration
StripeConfiguration.ApiKey = builder.Configuration["Stripe:SecretKey"];

// Localization
builder.Services.AddLocalization(options => options.ResourcesPath = "Resources");
builder.Services.Configure<RequestLocalizationOptions>(options =>
{
    var supportedCultures = new[]
    {
        new CultureInfo("pt-BR"),
        new CultureInfo("es"),
        new CultureInfo("en")
    };

    options.DefaultRequestCulture = new RequestCulture("pt-BR");
    options.SupportedCultures = supportedCultures;
    options.SupportedUICultures = supportedCultures;
    
    options.RequestCultureProviders.Insert(0, new QueryStringRequestCultureProvider());
    options.RequestCultureProviders.Insert(1, new CookieRequestCultureProvider());
});

// Custom Services
builder.Services.AddScoped<IQRCodeService, QRRapidoService>();
builder.Services.AddScoped<IUserService, UserService>();
builder.Services.AddScoped<AdDisplayService>();
builder.Services.AddScoped<StripeService>();

// Background Services
builder.Services.AddHostedService<HistoryCleanupService>();

// Monitoring Services
if (builder.Configuration.GetValue<bool>("ResourceMonitoring:Enabled", true))
{
    builder.Services.AddHostedService<ResourceMonitoringService>();
}

if (builder.Configuration.GetValue<bool>("MongoDbMonitoring:Enabled", true))
{
    builder.Services.AddHostedService<MongoDbMonitoringService>();
}

// CORS for API endpoints
builder.Services.AddCors(options =>
{
    options.AddPolicy("AllowSpecificOrigins", policy =>
    {
        policy.WithOrigins("https://qrrapido.site", "https://www.qrrapido.site")
              .AllowAnyHeader()
              .AllowAnyMethod();
    });
});

// Health checks with custom implementations
builder.Services.AddScoped<MongoDbHealthCheck>();
builder.Services.AddScoped<SeqHealthCheck>();
builder.Services.AddScoped<ResourceHealthCheck>();
builder.Services.AddScoped<ExternalServicesHealthCheck>();

builder.Services.AddHealthChecks()
    .AddCheck<MongoDbHealthCheck>("mongodb")
    .AddCheck<SeqHealthCheck>("seq")
    .AddCheck<ResourceHealthCheck>("resources")
    .AddCheck<ExternalServicesHealthCheck>("external_services");

var app = builder.Build();

// Configure the HTTP request pipeline
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Home/Error");
    app.UseHsts();
}

app.UseHttpsRedirection();

app.UseStaticFiles();

app.UseRouting();

app.UseCors("AllowSpecificOrigins");

// Localization middleware
app.UseRequestLocalization();

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

// Custom middleware
app.UseMiddleware<LastLoginUpdateMiddleware>();

// Health check endpoint
app.MapHealthChecks("/health");

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

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

// Language routes
app.MapControllerRoute(
    name: "localized",
    pattern: "{culture:regex(^(pt-BR|es|en)$)}/{controller=Home}/{action=Index}/{id?}");

try
{
    Log.Information("Starting QRRapido application");
    app.Run();
}
catch (Exception ex)
{
    Log.Fatal(ex, "QRRapido application terminated unexpectedly");
}
finally
{
    Log.CloseAndFlush();
}