#!/usr/bin/env node
import { readFileSync, writeFileSync } from 'fs';
import { join, dirname } from 'path';
import { fileURLToPath } from 'url';

// 获取当前文件目录
const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
const projectRoot = join(__dirname, '..');

console.log('🚀 开始构建项目...');

try {
  // 1. 读取package.json文件
  console.log('📋 读取package.json文件...');
  const rootPackageJson = JSON.parse(readFileSync(join(projectRoot, 'package.json'), 'utf8'));
  const serverPackageJson = JSON.parse(readFileSync(join(projectRoot, 'packages/server/package.json'), 'utf8'));

  // 2. 合并依赖
  console.log('🔗 合并依赖...');
  const mergedDependencies = {
    ...rootPackageJson.dependencies,
    ...serverPackageJson.dependencies
  };

  // 3. 创建生产环境的package.json
  const productionPackageJson = {
    name: rootPackageJson.name,
    type: 'module',
    version: rootPackageJson.version || '1.0.0',
    description: 'Koa SSR 生产环境应用',
    main: 'booststap.js',
    scripts: {
      start: 'bun run booststap.js'
    },
    dependencies: mergedDependencies,
    engines: {
      bun: '>=1.0.0'
    },
    keywords: ['koa', 'ssr', 'vue', 'bun'],
    author: '',
    license: 'MIT'
  };

  // 4. 写入新的package.json到dist目录
  console.log('💾 生成生产环境package.json...');
  const distPackageJsonPath = join(projectRoot, 'dist', 'package.json');
  writeFileSync(distPackageJsonPath, JSON.stringify(productionPackageJson, null, 2));
  console.log('✅ package.json 已生成到 dist/package.json');

  // 5. 显示合并后的依赖信息
  console.log('\n📊 依赖合并结果:');
  console.log(`- 根目录依赖: ${Object.keys(rootPackageJson.dependencies || {}).length} 个`);
  console.log(`- Server依赖: ${Object.keys(serverPackageJson.dependencies || {}).length} 个`);
  console.log(`- 合并后总依赖: ${Object.keys(mergedDependencies).length} 个`);
  
  console.log('\n🎉 构建脚本执行完成！');
  console.log('📁 生产环境文件已生成到 dist/ 目录');
  console.log('💡 可以使用以下命令启动生产环境:');
  console.log('   cd dist && bun install && bun run start');

} catch (error) {
  console.error('❌ 构建过程中发生错误:', error.message);
  process.exit(1);
}