package de.hftstuttgart.dtabackend.utils;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;

/**
 * Helper Class for all file related tasks.
 *
 * Created by Marcel Bochtler on 05.01.17.
 */
public class FileUtil {

    /**
     * Delete the folder and all containing files.
     * @param folder    Folder to delete
     */
    public static void deleteFolderRecursively(File folder) {
        File[] files = folder.listFiles();
        if (files != null) {
            for (File f : files) {
                if (f.isDirectory()) {
                    deleteFolderRecursively(f);
                } else {
                    f.delete();
                System.out.println(String.format("Deleted file: %s", f.getAbsolutePath()));
                }
            }
        }
        folder.delete();
        System.out.println(String.format("Deleted folder: %s", folder.getAbsolutePath()));
    }

    public static void copyFolder(Path src, Path dst) throws IOException {
        Files.walk(src)
            .forEach(source -> {
                try {
                    Files.copy(source, dst.resolve(src.relativize(source)));
                    System.out.println(String.format("Copying file from: %s to %s", source.toString(), dst.resolve(src.relativize(source)).toString()));
                } catch (IOException e) {
                    throw new RuntimeException(e.getMessage(), e);
                }
            });
    }
}