#!/usr/bin/env node

/**
 * Configuration Validation Script
 * Tests that all configuration modules can be loaded and validated
 */

// Set test environment variables
process.env.NODE_ENV = 'test';
process.env.PORT = '3001';

// Database configs
process.env.DB_HOST = 'localhost';
process.env.DB_PORT = '5432';
process.env.DB_NAME = 'test_db';
process.env.DB_USER = 'test_user';
process.env.DB_PASSWORD = 'test_pass';

// QuestDB configs
process.env.QUESTDB_HOST = 'localhost';
process.env.QUESTDB_HTTP_PORT = '9000';
process.env.QUESTDB_PG_PORT = '8812';

// MongoDB configs
process.env.MONGODB_HOST = 'localhost';
process.env.MONGODB_PORT = '27017';
process.env.MONGODB_DATABASE = 'test_db';

// Dragonfly configs
process.env.DRAGONFLY_HOST = 'localhost';
process.env.DRAGONFLY_PORT = '6379';

// Monitoring configs
process.env.PROMETHEUS_HOST = 'localhost';
process.env.PROMETHEUS_PORT = '9090';
process.env.GRAFANA_HOST = 'localhost';
process.env.GRAFANA_PORT = '3000';

// Loki configs
process.env.LOKI_HOST = 'localhost';
process.env.LOKI_PORT = '3100';

// Logging configs
process.env.LOG_LEVEL = 'info';
process.env.LOG_FORMAT = 'json';

try {
  console.log('🔍 Validating configuration modules...\n');

  // Test each configuration module
  const modules = [
    { name: 'Database', path: './dist/database.js' },
    { name: 'QuestDB', path: './dist/questdb.js' },
    { name: 'MongoDB', path: './dist/mongodb.js' },
    { name: 'Dragonfly', path: './dist/dragonfly.js' },
    { name: 'Monitoring', path: './dist/monitoring.js' },
    { name: 'Loki', path: './dist/loki.js' },
    { name: 'Logging', path: './dist/logging.js' },
  ];

  const results = [];

  for (const module of modules) {
    try {
      const config = require(module.path);
      const configKeys = Object.keys(config);
      
      if (configKeys.length === 0) {
        throw new Error('No exported configuration found');
      }

      // Try to access the main config object
      const mainConfig = config[configKeys[0]];
      if (!mainConfig || typeof mainConfig !== 'object') {
        throw new Error('Invalid configuration object');
      }

      console.log(`✅ ${module.name}: ${configKeys.length} config(s) loaded`);
      results.push({ name: module.name, status: 'success', configs: configKeys });
      
    } catch (error) {
      console.log(`❌ ${module.name}: ${error.message}`);
      results.push({ name: module.name, status: 'error', error: error.message });
    }
  }

  // Test main index exports
  try {
    const indexExports = require('./dist/index.js');
    const exportCount = Object.keys(indexExports).length;
    console.log(`\n✅ Index exports: ${exportCount} modules exported`);
    results.push({ name: 'Index', status: 'success', exports: exportCount });
  } catch (error) {
    console.log(`\n❌ Index exports: ${error.message}`);
    results.push({ name: 'Index', status: 'error', error: error.message });
  }

  // Summary
  const successful = results.filter(r => r.status === 'success').length;
  const total = results.length;
  
  console.log(`\n📊 Validation Summary:`);
  console.log(`   Total modules: ${total}`);
  console.log(`   Successful: ${successful}`);
  console.log(`   Failed: ${total - successful}`);
  
  if (successful === total) {
    console.log('\n🎉 All configuration modules validated successfully!');
    process.exit(0);
  } else {
    console.log('\n⚠️  Some configuration modules failed validation.');
    process.exit(1);
  }

} catch (error) {
  console.error('❌ Validation script failed:', error.message);
  process.exit(1);
}