const configLoader = require('./configLoader');
const logger = require('./logger');

const validateConfiguration = () => {
  try {
    console.log('🔍 Validating Reason Flow Configuration...\n');
    
    const config = configLoader.getAll();
    const env = configLoader.getEnvironment();
    
    console.log(`Environment: ${env}`);
    console.log(`Server: ${config.server.host}:${config.server.port}`);
    console.log(`Database: ${config.database.host}:${config.database.port}/${config.database.name}`);
    console.log(`CORS Origin: ${config.server.corsOrigin}\n`);
    
    // Check required configurations
    const checks = [
      {
        name: 'Groq API Key',
        value: config.apis.groq.apiKey,
        required: true,
        valid: config.apis.groq.apiKey && config.apis.groq.apiKey !== 'your_groq_api_key_here'
      },
      {
        name: 'JWT Secret',
        value: config.auth.jwtSecret,
        required: true,
        valid: config.auth.jwtSecret && config.auth.jwtSecret !== 'your_jwt_secret_here_make_it_long_and_secure'
      },
      {
        name: 'Database Password',
        value: config.database.password,
        required: true,
        valid: config.database.password && config.database.password !== 'your_password_here'
      },
      {
        name: 'OpenAI API Key',
        value: config.apis.openai.apiKey,
        required: false,
        valid: config.apis.openai.apiKey && config.apis.openai.apiKey !== 'your_openai_api_key_here'
      },
      {
        name: 'SERP API Key',
        value: config.apis.serp.apiKey,
        required: false,
        valid: config.apis.serp.apiKey && config.apis.serp.apiKey !== 'your_serp_api_key_here'
      }
    ];
    
    console.log('Configuration Checks:');
    console.log('====================');
    
    let allValid = true;
    let hasWarnings = false;
    
    checks.forEach(check => {
      const status = check.valid ? '✅' : (check.required ? '❌' : '⚠️');
      const required = check.required ? '(Required)' : '(Optional)';
      
      console.log(`${status} ${check.name} ${required}`);
      
      if (!check.valid && check.required) {
        allValid = false;
      } else if (!check.valid && !check.required) {
        hasWarnings = true;
      }
    });
    
    console.log('\n');
    
    // Environment-specific checks
    if (env === 'production') {
      console.log('Production Environment Checks:');
      console.log('==============================');
      
      const prodChecks = [
        {
          name: 'JWT Secret Security',
          valid: config.auth.jwtSecret !== 'dev_secret_key_change_in_production',
          message: 'JWT secret should be changed for production'
        },
        {
          name: 'Database SSL',
          valid: config.database.ssl,
          message: 'Database SSL is recommended for production'
        },
        {
          name: 'Debug Mode',
          valid: !config.development.debugMode,
          message: 'Debug mode should be disabled in production'
        },
        {
          name: 'Verbose Logging',
          valid: !config.development.verboseLogging,
          message: 'Verbose logging should be disabled in production'
        }
      ];
      
      prodChecks.forEach(check => {
        const status = check.valid ? '✅' : '⚠️';
        console.log(`${status} ${check.name}: ${check.message}`);
        
        if (!check.valid) {
          hasWarnings = true;
        }
      });
    }
    
    console.log('\n');
    
    // Summary
    if (allValid) {
      console.log('🎉 Configuration validation passed!');
      
      if (hasWarnings) {
        console.log('⚠️  Some optional configurations are missing or need attention.');
      }
      
      return true;
    } else {
      console.log('❌ Configuration validation failed!');
      console.log('Please fix the required configuration issues before starting the application.');
      return false;
    }
    
  } catch (error) {
    console.error('❌ Configuration validation error:', error.message);
    logger.error('Configuration validation error:', error);
    return false;
  }
};

const showConfiguration = () => {
  try {
    console.log('📋 Current Configuration:');
    console.log('========================\n');
    
    const config = configLoader.getAll();
    
    console.log('Server Configuration:');
    console.log(`  Port: ${config.server.port}`);
    console.log(`  Host: ${config.server.host}`);
    console.log(`  Environment: ${config.server.env}`);
    console.log(`  CORS Origin: ${config.server.corsOrigin}\n`);
    
    console.log('Database Configuration:');
    console.log(`  Host: ${config.database.host}`);
    console.log(`  Port: ${config.database.port}`);
    console.log(`  Name: ${config.database.name}`);
    console.log(`  User: ${config.database.user}`);
    console.log(`  SSL: ${config.database.ssl}\n`);
    
    console.log('API Configuration:');
    console.log(`  Groq Model: ${config.apis.groq.model}`);
    console.log(`  Groq API Key: ${config.apis.groq.apiKey ? 'Set' : 'Not Set'}`);
    console.log(`  OpenAI API Key: ${config.apis.openai.apiKey ? 'Set' : 'Not Set'}`);
    console.log(`  SERP API Key: ${config.apis.serp.apiKey ? 'Set' : 'Not Set'}\n`);
    
    console.log('Security Configuration:');
    console.log(`  JWT Secret: ${config.auth.jwtSecret ? 'Set' : 'Not Set'}`);
    console.log(`  JWT Expires In: ${config.auth.jwtExpiresIn}`);
    console.log(`  Helmet Enabled: ${config.security.helmetEnabled}\n`);
    
    console.log('Development Configuration:');
    console.log(`  Debug Mode: ${config.development.debugMode}`);
    console.log(`  Verbose Logging: ${config.development.verboseLogging}`);
    console.log(`  Hot Reload: ${config.development.hotReload}\n`);
    
  } catch (error) {
    console.error('❌ Error showing configuration:', error.message);
  }
};

// Run validation if this file is executed directly
if (require.main === module) {
  const args = process.argv.slice(2);
  const command = args[0] || 'validate';
  
  switch (command) {
    case 'validate':
      const isValid = validateConfiguration();
      process.exit(isValid ? 0 : 1);
      break;
    case 'show':
      showConfiguration();
      break;
    default:
      console.log('Usage: node validateConfig.js [validate|show]');
      process.exit(1);
  }
}

module.exports = {
  validateConfiguration,
  showConfiguration
};