#!/usr/bin/env node
/**
 * 强制删除项目下的 dist 目录（含长路径/占用时多轮重试）
 */
const fs = require('fs')
const path = require('path')
const { execSync } = require('child_process')

const projectRoot = path.resolve(__dirname, '..')
const distPath = path.join(projectRoot, 'dist')
const maxRetries = 5
const retryDelayMs = 1500

function sleep(ms) {
  return new Promise((r) => setTimeout(r, ms))
}

function deleteWithNode() {
  try {
    fs.rmSync(distPath, { recursive: true, force: true, maxRetries: 3 })
    return true
  } catch (e) {
    return false
  }
}

function deleteWithLongPath() {
  if (process.platform !== 'win32') return false
  try {
    const longPath = '\\\\?\\' + path.resolve(projectRoot, 'dist').replace(/\//g, '\\')
    fs.rmSync(longPath, { recursive: true, force: true, maxRetries: 3 })
    return true
  } catch (e) {
    return false
  }
}

function deleteWithCmd() {
  try {
    execSync('rmdir /s /q dist', { cwd: projectRoot, stdio: 'pipe', windowsHide: true })
    return true
  } catch (e) {
    return false
  }
}

async function main() {
  if (!fs.existsSync(distPath)) {
    console.log('dist 不存在，无需删除。')
    process.exit(0)
  }

  console.log('正在强制删除 dist...')

  for (let i = 0; i < maxRetries; i++) {
    if (deleteWithNode()) {
      console.log('已删除 dist（Node）。')
      process.exit(0)
    }
    if (process.platform === 'win32' && deleteWithLongPath()) {
      console.log('已删除 dist（长路径）。')
      process.exit(0)
    }
    if (deleteWithCmd()) {
      console.log('已删除 dist（cmd rmdir）。')
      process.exit(0)
    }
    if (i < maxRetries - 1) {
      console.log(`第 ${i + 1} 次未完全删除，${retryDelayMs / 1000} 秒后重试...`)
      await sleep(retryDelayMs)
    }
  }

  console.error('无法删除 dist，请关闭占用该目录的程序（如 Explorer、本应用）后重试，或手动删除。')
  process.exit(1)
}

main()