import java.io.File;
import java.util.HashSet;
import java.util.Set;

public class DeleteEmptyFolders {

    // 白名单路径集合
    private static final Set<String> WHITELIST_PATHS = new HashSet<>();

    static {
        // 添加白名单路径，请根据实际需求修改
//        WHITELIST_PATHS.add("/Users/zhanglaiman/WorkSpace/Molistar/core/src/main/java/com");
    }

    public static void main(String[] args) {
        String targetDir = "/Users/zhanglaiman/WorkSpace/Molistar/app";
        File rootDir = new File(targetDir);
        deleteEmptyFolders(rootDir);
    }

    private static boolean isDirectoryEmpty(File dir) {
        File[] files = dir.listFiles();
        if (files == null || files.length == 0) {
            return true;
        }
        for (File file : files) {
            if (file.isDirectory()) {
                if (!isDirectoryEmpty(file)) {
                    return false;
                }
            } else if (file.getName().endsWith(".java")) {
                return false;
            }
        }
        return true;
    }

    private static void deleteEmptyFolders(File dir) {
        if (dir == null || !dir.exists() || dir.isFile()) {
            return;
        }

        // 跳过白名单中的路径
        if (WHITELIST_PATHS.contains(dir.getAbsolutePath())) {
            System.out.println("跳过白名单路径: " + dir.getAbsolutePath());
            return;
        }

        File[] files = dir.listFiles();
        if (files != null) {
            for (File file : files) {
                if (file.isDirectory()) {
                    deleteEmptyFolders(file);
                }
            }
        }

        if (isDirectoryEmpty(dir)) {
            System.out.println("删除空文件夹: " + dir.getAbsolutePath());
            dir.delete();
        }
    }
}