import dotenv from "dotenv";
import { fileURLToPath } from "url";
import { dirname, join } from "path";

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

// Load .env.local first (for local development overrides), then .env
dotenv.config({ path: join(__dirname, "..", ".env.local") });
dotenv.config({ path: join(__dirname, "..", ".env") });

export const config = {
  // Server
  nodeEnv: process.env.NODE_ENV || "development",
  port: parseInt(process.env.PORT, 10) || 3000,
  host: process.env.HOST || "0.0.0.0",

  // Database
  mongodb: {
    uri: process.env.MONGODB_URI || "mongodb://localhost:27017/turbotrades",
  },

  // Session
  session: {
    secret: process.env.SESSION_SECRET || "your-super-secret-session-key",
    cookieName: "sessionId",
    maxAge: 1000 * 60 * 60 * 24 * 7, // 7 days
  },

  // JWT
  jwt: {
    accessSecret: process.env.JWT_ACCESS_SECRET || "your-jwt-access-secret",
    refreshSecret: process.env.JWT_REFRESH_SECRET || "your-jwt-refresh-secret",
    accessExpiry: process.env.JWT_ACCESS_EXPIRY || "15m",
    refreshExpiry: process.env.JWT_REFRESH_EXPIRY || "7d",
  },

  // Steam
  steam: {
    apiKey: process.env.STEAM_API_KEY,
    realm: process.env.STEAM_REALM || "http://localhost:3000",
    returnURL:
      process.env.STEAM_RETURN_URL || "http://localhost:3000/auth/steam/return",
  },

  // Cookies
  cookie: {
    domain: process.env.COOKIE_DOMAIN || "localhost",
    secure: process.env.COOKIE_SECURE === "true",
    sameSite: process.env.COOKIE_SAME_SITE || "lax",
    httpOnly: true,
  },

  // CORS
  cors: {
    origin: process.env.CORS_ORIGIN || "http://localhost:5173",
    credentials: true,
  },

  // Rate Limiting
  rateLimit: {
    max: parseInt(process.env.RATE_LIMIT_MAX, 10) || 100,
    timeWindow: parseInt(process.env.RATE_LIMIT_TIMEWINDOW, 10) || 60000,
  },

  // Email (for future implementation)
  email: {
    host: process.env.SMTP_HOST,
    port: parseInt(process.env.SMTP_PORT, 10) || 587,
    user: process.env.SMTP_USER,
    pass: process.env.SMTP_PASS,
    from: process.env.EMAIL_FROM || "noreply@turbotrades.com",
  },

  // WebSocket
  websocket: {
    url: process.env.WS_URL || "ws://localhost:3000/ws",
    pingInterval: parseInt(process.env.WS_PING_INTERVAL, 10) || 30000,
    maxPayload: parseInt(process.env.WS_MAX_PAYLOAD, 10) || 1048576,
  },

  // Security
  isDevelopment: process.env.NODE_ENV !== "production",
  isProduction: process.env.NODE_ENV === "production",
};

export default config;