#!/usr/bin/env node

/**
 * 部署助手脚本
 *
 * 使用:
 *   node scripts/deploy.js           # 标准部署（生产构建 + 依赖）
 *   node scripts/deploy.js --docker  # Docker 镜像
 *   node scripts/deploy.js --help    # 显示帮助
 */

import fs from 'fs'
import path from 'path'
import { execSync } from 'child_process'

const args = process.argv.slice(2)
const help = args.includes('--help') || args.includes('-h')
const isDocker = args.includes('--docker')
const outDir = args.includes('--out') ? args[args.indexOf('--out') + 1] : 'dist'

if (help) {
  console.log(`
Usage: node scripts/deploy.js [options]

Options:
  --docker    生成 Dockerfile
  --out PATH  输出目录（默认: dist）
  --help      显示此帮助信息

Examples:
  node scripts/deploy.js               生产构建
  node scripts/deploy.js --out build   输出到 build 目录
  node scripts/deploy.js --docker      生成 Docker 配置
`)
  process.exit(0)
}

console.log('🚀 开始部署流程...\n')

try {
  // 1. 生产构建
  console.log('📦 构建应用...')
  execSync('npm run build:prod', { stdio: 'inherit', cwd: process.cwd() })

  // 2. 创建部署目录
  console.log('\n📁 准备部署目录...')
  const deployDir = path.join(process.cwd(), 'deploy')

  if (fs.existsSync(deployDir)) {
    fs.rmSync(deployDir, { recursive: true })
  }
  fs.mkdirSync(deployDir, { recursive: true })

  // 3. 复制必要文件
  console.log('📋 复制文件...')

  // 复制构建输出
  fs.copyFileSync(
    path.join(process.cwd(), 'dist/index.js'),
    path.join(deployDir, 'index.js'),
  )
  fs.copyFileSync(
    path.join(process.cwd(), 'dist/package.json'),
    path.join(deployDir, 'package.json'),
  )

  // 复制 package.json（用于 npm install）
  const srcPkg = JSON.parse(fs.readFileSync('package.json', 'utf-8'))
  const deployPkg = {
    name: srcPkg.name,
    version: srcPkg.version,
    type: 'module',
    dependencies: srcPkg.dependencies,
  }
  fs.writeFileSync(
    path.join(deployDir, 'package.json'),
    JSON.stringify(deployPkg, null, 2),
  )

  // 复制 .env 模板
  if (fs.existsSync('.env.example')) {
    fs.copyFileSync('.env.example', path.join(deployDir, '.env.example'))
  }

  console.log(`✅ 部署文件已生成到 ${path.relative(process.cwd(), deployDir)}/`)

  // 4. 可选：生成 Docker 配置
  if (isDocker) {
    console.log('\n🐳 生成 Docker 配置...')

    const dockerfile = `FROM node:22-alpine

WORKDIR /app

# 复制应用文件
COPY package.json .
COPY index.js .

# 安装依赖
RUN npm ci --omit=dev

# 暴露端口
EXPOSE 3001

# 启动应用
CMD ["node", "index.js"]
`

    const dockerCompose = `version: '3.8'

services:
  csms:
    build: .
    ports:
      - "3001:3001"
    environment:
      NODE_ENV: production
    # env_file:
    #   - .env
    restart: unless-stopped
`

    fs.writeFileSync(path.join(deployDir, 'Dockerfile'), dockerfile)
    fs.writeFileSync(path.join(deployDir, 'docker-compose.yml'), dockerCompose)

    console.log('✅ Docker 文件已生成')
  }

  // 5. 显示部署信息
  console.log('\n📊 部署信息:')
  console.log(`  名称: ${deployPkg.name}`)
  console.log(`  版本: ${deployPkg.version}`)
  console.log(`  主文件: index.js`)
  console.log(`  依赖数: ${Object.keys(deployPkg.dependencies).length}`)

  const indexSize = fs.statSync(path.join(deployDir, 'index.js')).size
  console.log(`  代码大小: ${(indexSize / 1024).toFixed(1)}KB`)

  console.log('\n✨ 部署准备完成！\n')
  console.log('下一步:')
  console.log(`  1. cd ${path.relative(process.cwd(), deployDir)}`)
  console.log(`  2. npm install --omit=dev`)
  console.log(`  3. node index.js`)

  if (isDocker) {
    console.log('\n或使用 Docker:')
    console.log(`  1. cd ${path.relative(process.cwd(), deployDir)}`)
    console.log(`  2. docker compose up`)
  }
} catch (error) {
  console.error('\n❌ 部署失败:', error.message)
  process.exit(1)
}