// ecosystem.dev.config.cjs
// ============================================================================
// DEVELOPMENT PM2 CONFIGURATION
// ============================================================================
// This file mirrors the production ecosystem.config.cjs but with settings
// appropriate for the development environment inside the dev container.
//
// Key differences from production:
//   - Single instance for API (not cluster mode) to allow debugger attachment
//   - tsx watch mode for hot reloading
//   - Development-specific environment variables
//   - Logs written to /var/log/pm2 for Logstash integration (ADR-050)
//
// Usage:
//   pm2 start ecosystem.dev.config.cjs
//   pm2 logs                           # View all logs
//   pm2 logs flyer-crawler-api-dev     # View API logs only
//   pm2 restart all                    # Restart all processes
//   pm2 delete all                     # Stop all processes
//
// Related:
//   - ecosystem.config.cjs (production configuration)
//   - docs/adr/0014-linux-only-platform.md
//   - docs/adr/0050-postgresql-function-observability.md
// ============================================================================

// --- Environment Variable Validation ---
// In dev, we warn but don't fail - variables come from compose.dev.yml
const requiredVars = ['DB_HOST', 'JWT_SECRET'];
const missingVars = requiredVars.filter((key) => !process.env[key]);

if (missingVars.length > 0) {
  console.warn(
    '\n[ecosystem.dev.config.cjs] WARNING: The following environment variables are MISSING:',
  );
  missingVars.forEach((key) => console.warn(`   - ${key}`));
  console.warn(
    '[ecosystem.dev.config.cjs] These should be set in compose.dev.yml or .env.local\n',
  );
} else {
  console.log('[ecosystem.dev.config.cjs] Required environment variables are present.');
}

// --- Shared Environment Variables ---
// These come from compose.dev.yml environment section
const sharedEnv = {
  // Timezone: PST (America/Los_Angeles) for consistent log timestamps
  TZ: process.env.TZ || 'America/Los_Angeles',
  NODE_ENV: 'development',
  DB_HOST: process.env.DB_HOST || 'postgres',
  DB_PORT: process.env.DB_PORT || '5432',
  DB_USER: process.env.DB_USER || 'postgres',
  DB_PASSWORD: process.env.DB_PASSWORD || 'postgres',
  DB_NAME: process.env.DB_NAME || 'flyer_crawler_dev',
  REDIS_URL: process.env.REDIS_URL || 'redis://redis:6379',
  REDIS_HOST: process.env.REDIS_HOST || 'redis',
  REDIS_PORT: process.env.REDIS_PORT || '6379',
  FRONTEND_URL: process.env.FRONTEND_URL || 'https://localhost',
  JWT_SECRET: process.env.JWT_SECRET || 'dev-jwt-secret-change-in-production',
  WORKER_LOCK_DURATION: process.env.WORKER_LOCK_DURATION || '120000',
  // Sentry/Bugsink (ADR-015)
  SENTRY_DSN: process.env.SENTRY_DSN,
  SENTRY_ENVIRONMENT: process.env.SENTRY_ENVIRONMENT || 'development',
  SENTRY_ENABLED: process.env.SENTRY_ENABLED || 'true',
  SENTRY_DEBUG: process.env.SENTRY_DEBUG || 'true',
  // Optional API keys (may not be set in dev)
  GEMINI_API_KEY: process.env.GEMINI_API_KEY,
  GOOGLE_MAPS_API_KEY: process.env.GOOGLE_MAPS_API_KEY,
  GOOGLE_CLIENT_ID: process.env.GOOGLE_CLIENT_ID,
  GOOGLE_CLIENT_SECRET: process.env.GOOGLE_CLIENT_SECRET,
};

module.exports = {
  apps: [
    // =========================================================================
    // API SERVER (Development)
    // =========================================================================
    // Single instance with tsx watch for hot reloading.
    // Unlike production, we don't use cluster mode to allow:
    //   - Debugger attachment
    //   - Simpler log output
    //   - Hot reloading via tsx watch
    {
      name: 'flyer-crawler-api-dev',
      script: './node_modules/.bin/tsx',
      args: 'watch server.ts',
      cwd: '/app',
      watch: false, // tsx watch handles this
      instances: 1, // Single instance for debugging
      exec_mode: 'fork', // Fork mode (not cluster) for debugging
      max_memory_restart: '1G', // More generous in dev
      kill_timeout: 5000,
      // PM2 log configuration (ADR-050 - Logstash integration)
      output: '/var/log/pm2/api-out.log',
      error: '/var/log/pm2/api-error.log',
      log_date_format: 'YYYY-MM-DD HH:mm:ss Z',
      merge_logs: true,
      // Restart configuration
      max_restarts: 10,
      exp_backoff_restart_delay: 500,
      min_uptime: '5s',
      // Environment
      env: {
        ...sharedEnv,
        PORT: '3001',
      },
    },

    // =========================================================================
    // BACKGROUND WORKER (Development)
    // =========================================================================
    // Processes background jobs (flyer processing, cleanup, etc.)
    // Runs as a separate process like in production.
    {
      name: 'flyer-crawler-worker-dev',
      script: './node_modules/.bin/tsx',
      args: 'watch src/services/worker.ts',
      cwd: '/app',
      watch: false, // tsx watch handles this
      instances: 1,
      exec_mode: 'fork',
      max_memory_restart: '1G',
      kill_timeout: 10000, // Workers need more time to finish jobs
      // PM2 log configuration (ADR-050)
      output: '/var/log/pm2/worker-out.log',
      error: '/var/log/pm2/worker-error.log',
      log_date_format: 'YYYY-MM-DD HH:mm:ss Z',
      merge_logs: true,
      // Restart configuration
      max_restarts: 10,
      exp_backoff_restart_delay: 500,
      min_uptime: '5s',
      // Environment
      env: {
        ...sharedEnv,
      },
    },

    // =========================================================================
    // VITE FRONTEND DEV SERVER (Development)
    // =========================================================================
    // Vite dev server for frontend hot module replacement.
    // Listens on 5173 and is proxied by nginx to 443.
    {
      name: 'flyer-crawler-vite-dev',
      script: './node_modules/.bin/vite',
      args: '--host',
      cwd: '/app',
      watch: false, // Vite handles its own watching
      instances: 1,
      exec_mode: 'fork',
      max_memory_restart: '2G', // Vite can use significant memory
      kill_timeout: 5000,
      // PM2 log configuration (ADR-050)
      output: '/var/log/pm2/vite-out.log',
      error: '/var/log/pm2/vite-error.log',
      log_date_format: 'YYYY-MM-DD HH:mm:ss Z',
      merge_logs: true,
      // Restart configuration
      max_restarts: 10,
      exp_backoff_restart_delay: 500,
      min_uptime: '5s',
      // Environment
      env: {
        // Timezone: PST (America/Los_Angeles) for consistent log timestamps
        TZ: process.env.TZ || 'America/Los_Angeles',
        NODE_ENV: 'development',
        // Vite-specific env vars (VITE_ prefix)
        VITE_SENTRY_DSN: process.env.VITE_SENTRY_DSN,
        VITE_SENTRY_ENVIRONMENT: process.env.VITE_SENTRY_ENVIRONMENT || 'development',
        VITE_SENTRY_ENABLED: process.env.VITE_SENTRY_ENABLED || 'true',
        VITE_SENTRY_DEBUG: process.env.VITE_SENTRY_DEBUG || 'true',
      },
    },
  ],
};