package org.lsposed.lspatch.loader.util;

import java.io.IOException;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;

public class FileUtils {

    public static void deleteFolderIfExists(Path target) throws IOException {
        if (Files.notExists(target)) return;
        Files.walkFileTree(target, new SimpleFileVisitor<>() {
            @Override
            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs)
                    throws IOException {
                Files.delete(file);
                return FileVisitResult.CONTINUE;
            }

            @Override
            public FileVisitResult postVisitDirectory(Path dir, IOException e)
                    throws IOException {
                if (e == null) {
                    Files.delete(dir);
                    return FileVisitResult.CONTINUE;
                } else {
                    throw e;
                }
            }
        });
    }
}