using System.Globalization;
using Microsoft.AspNetCore.Localization;
using Microsoft.AspNetCore.Localization.Routing;
using Microsoft.Extensions.Options;
using Convert_It_Online.Services;
using Convert_It_Online.Middleware;
using Serilog;
using Serilog.Events;
using Serilog.Sinks.OpenSearch;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.Formats;
using HeyRed.ImageSharp.Heif.Formats.Heif;
using HeyRed.ImageSharp.Heif.Formats.Avif;

// Configurar suporte HEIF/AVIF para SixLabors.ImageSharp
Configuration.Default.Configure(new AvifConfigurationModule());
Configuration.Default.Configure(new HeifConfigurationModule());

var isDevelopment = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT") == "Development";
var hostname = Environment.MachineName;

Serilog.Debugging.SelfLog.Enable(msg =>
{
    Console.WriteLine($"[SERILOG SELF] {DateTime.Now:HH:mm:ss} {msg}");
    System.Diagnostics.Debug.WriteLine($"[SERILOG SELF] {msg}");
});

var builder = WebApplication.CreateBuilder(args);

var loggerConfig = new LoggerConfiguration()
    .ReadFrom.Configuration(builder.Configuration)
    .Enrich.FromLogContext()
    .Enrich.WithEnvironmentName()
    .Enrich.WithProcessId()
    .Enrich.WithThreadId()
    .Enrich.WithProperty("ApplicationName", builder.Configuration["ApplicationName"] ?? "Convert-It")
    .Enrich.WithProperty("Environment", builder.Environment.EnvironmentName)
    .Enrich.WithProperty("Hostname", hostname);

if (isDevelopment)
{
    loggerConfig
        .MinimumLevel.Debug()
        .MinimumLevel.Override("Microsoft.AspNetCore.Hosting", LogEventLevel.Information)
        .MinimumLevel.Override("Microsoft.AspNetCore.Routing", LogEventLevel.Information)
        .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
        .MinimumLevel.Override("System", LogEventLevel.Warning)
        .WriteTo.Console(
            restrictedToMinimumLevel: LogEventLevel.Debug,
            outputTemplate: "[{Timestamp:HH:mm:ss} {Level:u3}] {Message:lj}{NewLine}{Exception}")
        .WriteTo.File(
            "./logs/convert-it-dev-.log",
            rollingInterval: RollingInterval.Day,
            retainedFileCountLimit: 2,
            restrictedToMinimumLevel: LogEventLevel.Debug,
            outputTemplate: "[{Timestamp:yyyy-MM-dd HH:mm:ss.fff} {Level:u3}] {Message:lj} {Properties:j}{NewLine}{Exception}");

    var openSearchUrl = builder.Configuration["Serilog:OpenSearchUrl"];
    if (!string.IsNullOrEmpty(openSearchUrl))
    {
        var indexFormat = "convert-it-dev-{0:yyyy-MM}";

        try
        {
            loggerConfig.WriteTo.Async(a => a.OpenSearch(new OpenSearchSinkOptions(new Uri(openSearchUrl))
            {
                IndexFormat = indexFormat,
                AutoRegisterTemplate = true,
                BufferBaseFilename = "./logs/opensearch-buffer",
                ModifyConnectionSettings = conn => conn
                    .RequestTimeout(TimeSpan.FromSeconds(8))
                    .PingTimeout(TimeSpan.FromSeconds(4)),
                MinimumLogEventLevel = LogEventLevel.Debug,
                EmitEventFailure = EmitEventFailureHandling.WriteToSelfLog,
                RegisterTemplateFailure = RegisterTemplateRecovery.IndexAnyway,
                BatchPostingLimit = 10,
                Period = TimeSpan.FromSeconds(2),
                BufferRetainedInvalidPayloadsLimitBytes = 100 * 1024 * 1024,
                BufferLogShippingInterval = TimeSpan.FromSeconds(1),
                TemplateCustomSettings = new Dictionary<string, string>
                {
                    {"number_of_shards", "1"},
                    {"number_of_replicas", "0"}
                }
            }),
            bufferSize: 10000,
            blockWhenFull: false);
        }
        catch (Exception)
        {
            // Falha silenciosa - logs continuam no console e arquivo
        }
    }
}
else
{
    loggerConfig
        .MinimumLevel.Information()
        .MinimumLevel.Override("Microsoft.AspNetCore.Hosting.Diagnostics", LogEventLevel.Warning)
        .MinimumLevel.Override("Microsoft.AspNetCore.Routing.EndpointMiddleware", LogEventLevel.Warning)
        .MinimumLevel.Override("Microsoft.AspNetCore.StaticFiles", LogEventLevel.Warning)
        .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
        .MinimumLevel.Override("System", LogEventLevel.Warning)

        .WriteTo.Console(
            restrictedToMinimumLevel: LogEventLevel.Information,
            outputTemplate: "[{Timestamp:yyyy-MM-dd HH:mm:ss} {Level:u3}] {Message:lj}{NewLine}{Exception}")
        .WriteTo.File(
            "/app/logs/convert-it-.log",
            rollingInterval: RollingInterval.Day,
            retainedFileCountLimit: 7,
            restrictedToMinimumLevel: LogEventLevel.Warning,
            outputTemplate: "[{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} {Level:u3}] [{Hostname}] {Message:lj} {Properties:j}{NewLine}{Exception}");

    var openSearchUrl = builder.Configuration["Serilog:OpenSearchUrl"];
    if (!string.IsNullOrEmpty(openSearchUrl))
    {
        var environment = builder.Environment.EnvironmentName.ToLower();
        var envMapping = environment switch
        {
            "production" => "prod",
            "staging" => "release",
            "development" => "dev",
            _ => environment
        };

        var indexFormat = $"convert-it-{envMapping}-{{0:yyyy-MM}}";

        try
        {
            loggerConfig.WriteTo.Async(a => a.OpenSearch(new OpenSearchSinkOptions(new Uri(openSearchUrl))
            {
                IndexFormat = indexFormat,
                AutoRegisterTemplate = false,
                BufferBaseFilename = "./logs/buffer",
                ModifyConnectionSettings = conn => conn
                    .RequestTimeout(TimeSpan.FromSeconds(30))
                    .PingTimeout(TimeSpan.FromSeconds(10)),
                MinimumLogEventLevel = LogEventLevel.Information,
                EmitEventFailure = EmitEventFailureHandling.WriteToSelfLog,
                RegisterTemplateFailure = RegisterTemplateRecovery.IndexAnyway,
                BatchPostingLimit = 50,
                Period = TimeSpan.FromSeconds(5),
            }), bufferSize: 10000, blockWhenFull: false);
        }
        catch (Exception)
        {
            // Falha silenciosa em produção - logs continuam no console/arquivo
        }
    }
}

var logger = loggerConfig.CreateLogger();
Log.Logger = logger;

Console.WriteLine($"[STARTUP] {DateTime.Now:HH:mm:ss} - Logger configurado");
Log.Information("=== APLICAÇÃO INICIANDO ===");
Log.Information("Convert-It iniciando em {Environment} no host {Hostname}",
    builder.Environment.EnvironmentName, hostname);

builder.Host.UseSerilog();

builder.Services.AddLocalization();

builder.Services.AddSingleton<IUrlTranslationService, UrlTranslationService>();
builder.Services.AddSingleton<IAudioTranscriptionService, AudioTranscriptionService>();

var supportedCultures = new[] { "pt-BR", "es-MX", "es-CL", "es-PY" };
builder.Services.Configure<RequestLocalizationOptions>(options =>
{
    options.DefaultRequestCulture = new RequestCulture("pt-BR");
    options.SupportedCultures = supportedCultures.Select(c => new CultureInfo(c)).ToList();
    options.SupportedUICultures = supportedCultures.Select(c => new CultureInfo(c)).ToList();
});

builder.Services.AddControllersWithViews()
    .AddViewLocalization(Microsoft.AspNetCore.Mvc.Razor.LanguageViewLocationExpanderFormat.Suffix);

var app = builder.Build();

var localizationOptions = app.Services.GetRequiredService<IOptions<RequestLocalizationOptions>>().Value;

localizationOptions.RequestCultureProviders.Clear();
localizationOptions.RequestCultureProviders.Insert(0, new RouteDataRequestCultureProvider());
localizationOptions.RequestCultureProviders.Insert(1, new AcceptLanguageHeaderRequestCultureProvider());
localizationOptions.RequestCultureProviders.Insert(2, new QueryStringRequestCultureProvider());

// 3. Pipeline de Middlewares (na ordem correta)
if (app.Environment.IsDevelopment())
{
    app.UseDeveloperExceptionPage();
}

app.UseExceptionHandler("/Home/Error");
app.UseHsts();

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

app.UseMiddleware<UrlTranslationMiddleware>();
app.UseRouting();
app.UseRequestLocalization(localizationOptions);
app.UseAuthorization();

// Health endpoint mapping
app.MapControllerRoute(
    name: "health",
    pattern: "health",
    defaults: new { controller = "Health", action = "HealthCheck" });

app.MapControllerRoute(
    name: "uptimeKuma",
    pattern: "uptime-kuma",
    defaults: new { controller = "Health", action = "UptimeKuma" });

app.MapControllerRoute(
    name: "areaRoute",
    pattern: "{culture:length(2,5)}/{area:exists}/{controller=Home}/{action=Index}/{id?}");

app.MapControllerRoute(
    name: "default",
    pattern: "{culture:length(2,5)}/{controller=Home}/{action=Index}/{id?}");

app.MapControllerRoute(
    name: "root",
    pattern: "{controller=Home}/{action=Index}/{id?}",
    defaults: new { culture = "pt-BR" });

Log.Information("=== APLICAÇÃO CONFIGURADA - INICIANDO SERVER ===");

try
{
    app.Run();
}
catch (Exception ex)
{
    Log.Fatal(ex, "Aplicação falhou ao iniciar");
    throw;
}
finally
{
    Log.CloseAndFlush();
}