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package cn.dreampie.common.util;

import java.io.File;

public class FileUtils {

  private static FileUtils fileUtils = new FileUtils();

  private FileUtils() {
  }

  public static FileUtils me() {
    return fileUtils;
  }

  /**
   * @param file 文件对象
   * @return boolean
   */
  public boolean delete(File file) {
    boolean result = true;
    if (file != null) {
      if (file.exists()) {
        if (file.isDirectory()) {
          for (File f : file.listFiles()) {
            result = result && delete(f);
          }
        }
        result = result && file.delete();
        file = null;
      }
    }
    return result;
  }

  /**
   * 删除指定文件名的文件或文件夹
   *
   * @param file     file
   * @param filename filename
   * @return boolean
   */
  public boolean delete(File file, String filename) {
    boolean result = true;
    if (file != null) {
      if (file.exists()) {
        if (file.isDirectory()) {
          if (file.getName().equals(filename)) {
            for (File f : file.listFiles()) {
              result = result && delete(f);
            }
            result = result && file.delete();
          } else {
            for (File f : file.listFiles()) {
              result = result && delete(f, filename);
            }
          }
        } else if (file.getName().equals(filename)) {
          result = result && file.delete();
          file = null;
        }
      }
    }
    return result;
  }

  /**
   * 删除文件
   *
   * @param path file path
   * @return boolean
   */
  public boolean delete(String path) {
    if (!ValidateUtils.me().isNullOrEmpty(path)) {
      File file = new File(path);
      return delete(file);
    }
    return false;
  }

  /**
   * 删除指定名称的文件
   *
   * @param path     file path
   * @param filename filename
   * @return boolean
   */
  public boolean delete(String path, String filename) {
    if (!ValidateUtils.me().isNullOrEmpty(path)) {
      File file = new File(path);
      return delete(file, filename);
    }
    return false;
  }

  /**
   * @param file 文件目录
   * @return boolean
   */
  public boolean exist(File file) {
    if (file != null) {
      if (file.isDirectory()) {
        return true;
      } else
        return file.exists();
    }
    return false;
  }

  /**
   * 存在子文件或子目录
   *
   * @param file file
   * @return boolean
   */
  public boolean existChild(File file) {
    if (file.isDirectory()) {
      for (File f : file.listFiles()) {
        if (f.isDirectory() || f.exists()) {
          return true;
        }
      }
    }
    return false;
  }


  /**
   * 判断文件是否存在
   *
   * @param path file path
   * @return boolean
   */

  public boolean exist(String path) {
    if (!ValidateUtils.me().isNullOrEmpty(path)) {
      File file = new File(path);
      if (file.isDirectory()) {
        return true;
      } else
        return exist(file);
    }
    return false;
  }

  public static void main(String[] args) {
    System.out.println(FileUtils.me().delete("D:\\workspace\\idea\\dreampie", ".git"));
  }
}