// var/cleanWorkspace.groovy 清理工作空间
def call(Map config = [:]) {
    def cleanBeforeBuild = config.get('clean', true)
    def keepPatterns = config.get('keep', ['.git', '.gradle'])

    if (!cleanBeforeBuild) {
        echo "⏭️ Skipping workspace cleanup."
        echo "✅ Workspace ready at: ${pwd()}"
        return
    }

    echo "🧹 Cleaning workspace, preserving: ${keepPatterns}"
    if (isUnix()) {
        cleanUnix(keepPatterns)
    } else {
        cleanWindows(keepPatterns)
    }
    echo "✅ Workspace ready at: ${pwd()}"
}

// ---------- Unix ----------
private void cleanUnix(List keep) {
    def mask = keep.join('|')
    sh """
      set +x
      shopt -s extglob dotglob
      rm -rf !(${mask})
    """
}

// ---------- Windows ----------
private void cleanWindows(List keep) {
    // 先把要保留的写成 bat 可识别的“排除”语法
    def exclude = keep.collect { "/EXCLUDE:${it}" }.join(' ')
    bat """
      for /f "delims=" %%i in ('dir /b /a-d') do (
        echo %%i | findstr /i /v "${keep.join('|')}" >nul && del "%%i"
      )
      for /d %%d in (*) do (
        echo %%d | findstr /i /v "${keep.join('|')}" >nul && rd /s /q "%%d"
      )
    """
}