#!/usr/bin/env node

import { spawn } from 'child_process';
import os from 'os';

// 内存限制配置（4GB总内存）
const memoryLimits = [
  { nodeOptions: '--max-old-space-size=1536', viteThreads: 1, name: '第一次尝试' },
  { nodeOptions: '--max-old-space-size=1280', viteThreads: 1, name: '第二次尝试' },
  { nodeOptions: '--max-old-space-size=1024', viteThreads: 1, name: '第三次尝试' }
];

async function runBuild(config) {
  console.log(`🚀 ${config.name}: 内存限制 ${config.nodeOptions}`);
  
  return new Promise((resolve, reject) => {
    const env = {
      ...process.env,
      NODE_OPTIONS: config.nodeOptions,
      VITE_BUILD_THREADS: config.viteThreads,
      NUXT_BUILD_PARALLEL: 'false',
      NUXT_SSR: 'true',
      VITE_PLUGIN_VUE_MAX_PARALLEL: '1',
      VITE_BUILD_MINIFY: 'esbuild',
      VITE_SSR_MANIFEST: 'false',
      VITE_SOURCEMAP: 'false'
    };

    const buildProcess = spawn('npm', ['run', 'build'], {
      env,
      stdio: 'inherit',
      shell: true
    });

    buildProcess.on('close', (code) => {
      if (code === 0) {
        console.log(`✅ ${config.name}: 构建成功！`);
        resolve(true);
      } else {
        console.log(`❌ ${config.name}: 构建失败，退出码 ${code}`);
        resolve(false);
      }
    });

    buildProcess.on('error', (err) => {
      console.log(`❌ ${config.name}: 构建错误`, err.message);
      resolve(false);
    });

    // 10分钟超时
    setTimeout(() => {
      buildProcess.kill();
      console.log(`⏰ ${config.name}: 构建超时`);
      resolve(false);
    }, 600000);
  });
}

async function main() {
  console.log('🎯 开始内存优化构建（4GB限制）');
  console.log(`💻 系统内存: ${Math.round(os.totalmem() / 1024 / 1024 / 1024)}GB`);
  
  for (let i = 0; i < memoryLimits.length; i++) {
    const success = await runBuild(memoryLimits[i]);
    if (success) {
      console.log('🎉 构建完成！');
      process.exit(0);
    }
    
    if (i < memoryLimits.length - 1) {
      console.log('🔄 尝试更保守的设置...');
      await new Promise(resolve => setTimeout(resolve, 5000)); // 等待5秒
    }
  }
  
  console.log('💥 所有构建尝试都失败了');
  console.log('💡 建议：');
  console.log('   1. 增加Docker内存限制');
  console.log('   2. 使用更强大的构建机器');
  console.log('   3. 考虑在外部构建后复制结果');
  process.exit(1);
}

main().catch(console.error);