using GoogleApi.Configuration;
using GoogleApi.Security;
using GoogleApi.Services;

var builder = WebApplication.CreateBuilder(args);

// ============================================================
// CRITICAL: Explicit port binding for Azure Container Apps
// ============================================================
var port = Environment.GetEnvironmentVariable("PORT") ?? "8080";
builder.WebHost.UseUrls($"http://0.0.0.0:{port}");

// ============================================================
// Configuration
// ============================================================

// Bind GoogleAds configuration section
// Values can be overridden by environment variables:
//   GoogleAds__EnableRealApi=true
//   GoogleAds__DeveloperToken=xxx
//   GoogleAds__OAuth__ClientId=xxx
//   etc.
builder.Services.Configure<GoogleAdsConfig>(
    builder.Configuration.GetSection(GoogleAdsConfig.SectionName));

// Log startup info
var googleConfig = builder.Configuration.GetSection(GoogleAdsConfig.SectionName).Get<GoogleAdsConfig>();
Console.WriteLine("===========================================");
Console.WriteLine($"[GoogleApi] Starting...");
Console.WriteLine($"[GoogleApi] Port: {port}");
Console.WriteLine($"[GoogleApi] Environment: {builder.Environment.EnvironmentName}");
Console.WriteLine($"[GoogleApi] GOOGLE_INTERNAL_KEY set: {!string.IsNullOrEmpty(builder.Configuration["InternalKey"] ?? Environment.GetEnvironmentVariable("GOOGLE_INTERNAL_KEY"))}");
Console.WriteLine($"[GoogleApi] Real API Enabled: {googleConfig?.EnableRealApi ?? false}");
Console.WriteLine($"[GoogleApi] API Version: {googleConfig?.ApiVersion ?? "not configured"}");
Console.WriteLine($"[GoogleApi] Developer Token Set: {!string.IsNullOrEmpty(googleConfig?.DeveloperToken)}");
Console.WriteLine("===========================================");

// ============================================================
// Services
// ============================================================
builder.Services.AddControllers();
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1", new() { Title = "GoogleApi Provider", Version = "v1" });
});

// Core services
builder.Services.AddSingleton<GoogleAdsClientFactory>();
builder.Services.AddSingleton<GoogleAdsService>();

// Auth filter for internal calls from Gateway
builder.Services.AddScoped<InternalAuthFilter>();

// ============================================================
// Build & Configure
// ============================================================
var app = builder.Build();

Console.WriteLine("[GoogleApi] App built, configuring pipeline...");

// Always enable Swagger (helpful for debugging)
app.UseSwagger();
app.UseSwaggerUI();

app.UseRouting();
app.MapControllers();

// Root health check
app.MapGet("/", () => Results.Ok(new
{
    service = "GoogleApi",
    status = "healthy",
    timestamp = DateTimeOffset.UtcNow
}));

// Detailed health check with config status
app.MapGet("/health", (IConfiguration config) =>
{
    var googleConfig = config.GetSection(GoogleAdsConfig.SectionName).Get<GoogleAdsConfig>();
    
    return Results.Ok(new
    {
        service = "GoogleApi",
        status = "healthy",
        timestamp = DateTimeOffset.UtcNow,
        config = new
        {
            realApiEnabled = googleConfig?.EnableRealApi ?? false,
            apiVersion = googleConfig?.ApiVersion ?? "not configured",
            developerTokenSet = !string.IsNullOrEmpty(googleConfig?.DeveloperToken),
            oauthConfigured = !string.IsNullOrEmpty(googleConfig?.OAuth?.ClientId),
            defaultLoginCustomerId = googleConfig?.DefaultLoginCustomerId ?? "(not set)"
        }
    });
});

Console.WriteLine("[GoogleApi] Pipeline configured, starting listener...");
Console.WriteLine($"[GoogleApi] Listening on http://0.0.0.0:{port}");

app.Run();