// ecosystem-test.config.cjs
// PM2 configuration for the TEST environment only.
// NOTE: The filename must end with `.config.cjs` for PM2 to recognize it as a config file.
// This file defines test-specific apps that run alongside production apps.
//
// Test apps: flyer-crawler-api-test, flyer-crawler-worker-test, flyer-crawler-analytics-worker-test
//
// These apps:
// - Run from /var/www/flyer-crawler-test.projectium.com
// - Use NODE_ENV='staging' (enables file logging in logger.server.ts)
// - Use Redis database 1 (isolated from production which uses database 0)
// - Have distinct PM2 process names to avoid conflicts with production

// --- Load Environment Variables from .env file ---
// This allows PM2 to start without requiring the CI/CD pipeline to inject variables.
// The .env file should be created on the server with the required secrets.
// NOTE: We implement a simple .env parser since dotenv may not be installed.
const path = require('path');
const fs = require('fs');

const envPath = path.join('/var/www/flyer-crawler-test.projectium.com', '.env');
if (fs.existsSync(envPath)) {
  console.log('[ecosystem-test.config.cjs] Loading environment from:', envPath);
  const envContent = fs.readFileSync(envPath, 'utf8');
  const lines = envContent.split('\n');
  for (const line of lines) {
    // Skip comments and empty lines
    const trimmed = line.trim();
    if (!trimmed || trimmed.startsWith('#')) continue;

    // Parse KEY=value
    const eqIndex = trimmed.indexOf('=');
    if (eqIndex > 0) {
      const key = trimmed.substring(0, eqIndex);
      let value = trimmed.substring(eqIndex + 1);
      // Remove quotes if present
      if (
        (value.startsWith('"') && value.endsWith('"')) ||
        (value.startsWith("'") && value.endsWith("'"))
      ) {
        value = value.slice(1, -1);
      }
      // Only set if not already in environment (don't override CI/CD vars)
      if (!process.env[key]) {
        process.env[key] = value;
      }
    }
  }
  console.log('[ecosystem-test.config.cjs] Environment loaded successfully');
} else {
  console.warn('[ecosystem-test.config.cjs] No .env file found at:', envPath);
  console.warn(
    '[ecosystem-test.config.cjs] Environment variables must be provided by the shell or CI/CD.'
  );
}

// --- Environment Variable Validation ---
// NOTE: We only WARN about missing secrets, not exit.
// Calling process.exit(1) prevents PM2 from reading the apps array.
// The actual application will fail to start if secrets are missing,
// which PM2 will handle with its restart logic.
const requiredSecrets = ['DB_HOST', 'JWT_SECRET', 'GEMINI_API_KEY'];
const missingSecrets = requiredSecrets.filter(key => !process.env[key]);

if (missingSecrets.length > 0) {
  console.warn('\n[ecosystem.config.test.cjs] WARNING: The following environment variables are MISSING:');
  missingSecrets.forEach(key => console.warn(`   - ${key}`));
  console.warn('[ecosystem.config.test.cjs] The application may fail to start if these are required.\n');
} else {
  console.log('[ecosystem.config.test.cjs] Critical environment variables are present.');
}

// --- Shared Environment Variables ---
const sharedEnv = {
  DB_HOST: process.env.DB_HOST,
  DB_USER: process.env.DB_USER,
  DB_PASSWORD: process.env.DB_PASSWORD,
  DB_NAME: process.env.DB_NAME,
  REDIS_URL: process.env.REDIS_URL,
  REDIS_PASSWORD: process.env.REDIS_PASSWORD,
  FRONTEND_URL: process.env.FRONTEND_URL,
  JWT_SECRET: process.env.JWT_SECRET,
  GEMINI_API_KEY: process.env.GEMINI_API_KEY,
  GOOGLE_MAPS_API_KEY: process.env.GOOGLE_MAPS_API_KEY,
  SMTP_HOST: process.env.SMTP_HOST,
  SMTP_PORT: process.env.SMTP_PORT,
  SMTP_SECURE: process.env.SMTP_SECURE,
  SMTP_USER: process.env.SMTP_USER,
  SMTP_PASS: process.env.SMTP_PASS,
  SMTP_FROM_EMAIL: process.env.SMTP_FROM_EMAIL,
  SENTRY_DSN: process.env.SENTRY_DSN,
  SENTRY_ENVIRONMENT: process.env.SENTRY_ENVIRONMENT,
  SENTRY_ENABLED: process.env.SENTRY_ENABLED,
};

module.exports = {
  apps: [
    // =========================================================================
    // TEST APPS
    // =========================================================================
    {
      // --- Test API Server ---
      name: 'flyer-crawler-api-test',
      script: './node_modules/.bin/tsx',
      args: 'server.ts',
      cwd: '/var/www/flyer-crawler-test.projectium.com',
      max_memory_restart: '500M',
      // Test environment: single instance (no cluster) to conserve resources
      instances: 1,
      exec_mode: 'fork',
      kill_timeout: 5000,
      log_date_format: 'YYYY-MM-DD HH:mm:ss Z',
      max_restarts: 40,
      exp_backoff_restart_delay: 100,
      min_uptime: '10s',
      env: {
        NODE_ENV: 'staging',
        PORT: 3002,
        WORKER_LOCK_DURATION: '120000',
        ...sharedEnv,
      },
    },
    {
      // --- Test General Worker ---
      name: 'flyer-crawler-worker-test',
      script: './node_modules/.bin/tsx',
      args: 'src/services/worker.ts',
      cwd: '/var/www/flyer-crawler-test.projectium.com',
      max_memory_restart: '1G',
      kill_timeout: 10000,
      log_date_format: 'YYYY-MM-DD HH:mm:ss Z',
      max_restarts: 40,
      exp_backoff_restart_delay: 100,
      min_uptime: '10s',
      env: {
        NODE_ENV: 'staging',
        ...sharedEnv,
      },
    },
    {
      // --- Test Analytics Worker ---
      name: 'flyer-crawler-analytics-worker-test',
      script: './node_modules/.bin/tsx',
      args: 'src/services/worker.ts',
      cwd: '/var/www/flyer-crawler-test.projectium.com',
      max_memory_restart: '1G',
      kill_timeout: 10000,
      log_date_format: 'YYYY-MM-DD HH:mm:ss Z',
      max_restarts: 40,
      exp_backoff_restart_delay: 100,
      min_uptime: '10s',
      env: {
        NODE_ENV: 'staging',
        ...sharedEnv,
      },
    },
  ],
};