/**
 * 将 frontend/dist、frontend-admin/dist 复制到 backend/public
 * 用法：
 *   node scripts/deploy-static.js           # 两端都部署
 *   node scripts/deploy-static.js member    # 仅会员端
 *   node scripts/deploy-static.js admin     # 仅管理端
 */
import fs from 'fs'
import path from 'path'
import { fileURLToPath } from 'url'

const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..')
const publicDir = path.join(root, 'backend', 'public')
const memberDist = path.join(root, 'frontend', 'dist')
const adminDist = path.join(root, 'frontend-admin', 'dist')
const adminPublic = path.join(publicDir, 'admin')

const target = (process.argv[2] || 'all').toLowerCase()
if (!['all', 'member', 'admin'].includes(target)) {
  console.error(`未知目标: ${target}，可用: all | member | admin`)
  process.exit(1)
}

const keepInPublic = new Set([
  'index.php',
  'router.php',
  'robots.txt',
  'nginx.htaccess',
  '.htaccess',
  'static'
])

function assertDir(dir, label) {
  if (!fs.existsSync(dir)) {
    throw new Error(`${label} 不存在，请先执行对应前端的 npm run build`)
  }
}

function rmPath(targetPath) {
  if (!fs.existsSync(targetPath)) return
  fs.rmSync(targetPath, { recursive: true, force: true })
}

function copyDir(src, dest) {
  fs.mkdirSync(dest, { recursive: true })
  for (const name of fs.readdirSync(src)) {
    const from = path.join(src, name)
    const to = path.join(dest, name)
    if (fs.statSync(from).isDirectory()) {
      copyDir(from, to)
    } else {
      fs.copyFileSync(from, to)
    }
  }
}

function cleanMemberStatic() {
  if (!fs.existsSync(publicDir)) {
    fs.mkdirSync(publicDir, { recursive: true })
    return
  }
  for (const name of fs.readdirSync(publicDir)) {
    if (keepInPublic.has(name) || name === 'admin') continue
    rmPath(path.join(publicDir, name))
  }
}

function deployMember() {
  assertDir(memberDist, '会员端 dist')
  cleanMemberStatic()
  copyDir(memberDist, publicDir)
  console.log('✓ 会员端已部署到 backend/public/')
}

function deployAdmin() {
  assertDir(adminDist, '管理端 dist')
  rmPath(adminPublic)
  copyDir(adminDist, adminPublic)
  console.log('✓ 管理端已部署到 backend/public/admin/')
}

if (target === 'all' || target === 'member') {
  deployMember()
}
if (target === 'all' || target === 'admin') {
  deployAdmin()
}