#!/usr/bin/env node

const { execSync } = require('child_process');
const fs = require('fs');
const path = require('path');

/**
 * Build System Helper - Shows available build commands and their descriptions
 */

const commands = {
  'Development Commands': {
    'npm run dev': 'Start development server with hot reload',
    'npm run watch': 'Watch mode TypeScript compilation',
    'npm run typecheck': 'Type checking without code generation'
  },
  'Build Commands': {
    'npm run build': 'Standard build: clean → compile → copy assets',
    'npm run build:clean': 'Clean the dist directory',
    'npm run build:compile': 'Compile TypeScript to JavaScript',
    'npm run build:copy-assets': 'Copy non-TS files to dist directory',
    'npm run build:docker': 'Build for Docker (no tests/migrations)'
  },
  'Production Build Commands': {
    'npm run build:production': 'Full production build with linting, tests, and migrations',
    'npm run build:advanced': 'Advanced build script with custom options',
    'npm run build:advanced:prod': 'Advanced production build with all validations',
    'npm run build:advanced:ci': 'CI/CD friendly build (skips linting)',
    'npm run deploy:prod': 'Build for production deployment'
  },
  'Database Commands': {
    'npm run migration:run': 'Run pending database migrations',
    'npm run migration:show': 'Show migration status',
    'npm run migration:generate <name>': 'Generate new migration',
    'npm run migration:create <name>': 'Create empty migration',
    'npm run migration:revert': 'Revert last migration',
    'npm run migration:full <name>': 'Create, generate, and run migration'
  },
  'Testing Commands': {
    'npm test': 'Run all tests',
    'npm run test:watch': 'Run tests in watch mode',
    'npm run test:coverage': 'Run tests with coverage report',
    'npm run test:redis': 'Run Redis-specific tests'
  },
  'Deployment Scripts': {
    'scripts/deploy.sh': 'Full Linux/Mac deployment script',
    'scripts/deploy.bat': 'Full Windows deployment script'
  }
};

function showCommands() {
  console.log('🔧 SerpentRace Backend Build System\n');
  
  Object.entries(commands).forEach(([category, categoryCommands]) => {
    console.log(`\x1b[36m${category}\x1b[0m`);
    console.log('=' .repeat(category.length));
    
    Object.entries(categoryCommands).forEach(([command, description]) => {
      console.log(`  \x1b[32m${command.padEnd(35)}\x1b[0m ${description}`);
    });
    
    console.log('');
  });
  
  console.log('\x1b[33mQuick Start:\x1b[0m');
  console.log('  npm run build                    # Basic build');
  console.log('  npm run build:production         # Production build');
  console.log('  npm run dev                      # Development server\n');
  
  console.log('\x1b[33mDocumentation:\x1b[0m');
  console.log('  See BUILD.md for detailed documentation');
}

function checkBuildStatus() {
  const distPath = path.join(__dirname, '..', 'dist');
  
  if (fs.existsSync(distPath)) {
    const stats = fs.statSync(distPath);
    console.log(`\x1b[32m✅ Last build:\x1b[0m ${stats.mtime.toLocaleString()}`);
    
    const indexPath = path.join(distPath, 'Api', 'index.js');
    if (fs.existsSync(indexPath)) {
      console.log('\x1b[32m✅ Main entry point built successfully\x1b[0m');
    } else {
      console.log('\x1b[31m❌ Main entry point missing\x1b[0m');
    }
  } else {
    console.log('\x1b[33m⚠️  No build found - run "npm run build" first\x1b[0m');
  }
}

// Handle command line arguments
const args = process.argv.slice(2);

if (args.includes('--help') || args.includes('-h')) {
  showCommands();
} else if (args.includes('--status') || args.includes('-s')) {
  checkBuildStatus();
} else if (args.includes('--quick') || args.includes('-q')) {
  console.log('🚀 Quick build starting...');
  try {
    execSync('npm run build', { stdio: 'inherit' });
  } catch (error) {
    console.error('❌ Quick build failed');
    process.exit(1);
  }
} else {
  showCommands();
  checkBuildStatus();
  
  console.log('\n\x1b[33mOptions:\x1b[0m');
  console.log('  --help, -h      Show this help');
  console.log('  --status, -s    Show build status only');
  console.log('  --quick, -q     Run quick build');
}