import dotenv from 'dotenv';
import path from 'path';

// Load environment-specific .env file
const envFile = process.env.NODE_ENV === 'production'
  ? '.env.production'
  : '.env.development';

dotenv.config({ path: path.resolve(__dirname, '../../', envFile) });

interface EnvironmentConfig {
  nodeEnv: string;
  port: number;
  database: {
    host: string;
    port: number;
    name: string;
    user: string;
    password: string;
  };
  jwt: {
    secret: string;
    expiresIn: string | number;
  };
  cors: {
    origin: string;
  };
  rateLimit: {
    windowMs: number;
    max: number;
  };
  authentik: {
    issuer: string;
    clientId: string;
    clientSecret: string;
    redirectUri: string;
  };
}

const environment: EnvironmentConfig = {
  nodeEnv: process.env.NODE_ENV || 'development',
  port: parseInt(process.env.PORT || '3000', 10),
  database: {
    host: process.env.DB_HOST || 'localhost',
    port: parseInt(process.env.DB_PORT || '5432', 10),
    name: process.env.DB_NAME || 'feuerwehr_dev',
    user: process.env.DB_USER || 'dev_user',
    password: process.env.DB_PASSWORD || 'dev_password',
  },
  jwt: {
    secret: process.env.JWT_SECRET || 'your-secret-key-change-in-production',
    expiresIn: process.env.JWT_EXPIRES_IN || '24h',
  },
  cors: {
    origin: process.env.CORS_ORIGIN || 'http://localhost:3001',
  },
  rateLimit: {
    windowMs: parseInt(process.env.RATE_LIMIT_WINDOW_MS || '900000', 10), // 15 minutes
    max: parseInt(process.env.RATE_LIMIT_MAX || '100', 10),
  },
  authentik: {
    issuer: process.env.AUTHENTIK_ISSUER || 'https://auth.firesuite.feuerwehr-rems.at/application/o/feuerwehr-dashboard/',
    clientId: process.env.AUTHENTIK_CLIENT_ID || 'your_client_id_here',
    clientSecret: process.env.AUTHENTIK_CLIENT_SECRET || 'your_client_secret_here',
    redirectUri: process.env.AUTHENTIK_REDIRECT_URI || 'http://localhost:5173/auth/callback',
  },
};

export default environment;