package edu.jiangxin.apktoolbox.file.core;
   
   import java.io.BufferedInputStream;
   import java.io.BufferedOutputStream;
   import java.io.File;
   import java.io.FileInputStream;
   import java.io.FileOutputStream;
   import java.io.IOException;
   
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  
  /**
   * 文件或文件夹的简单处理
   * 
   * @author jiangxin
   * @author 2018-09-09
   */
  public class FileProcess {
  
      private static final Logger logger = LogManager.getLogger(FileProcess.class.getSimpleName());
      /**
       * The size of the buffer
       */
      final static int BUFFERSIZE = 1024 * 5;
  
      /**
       * 复制文件
       * 
       * @param srcFileString
       * @param desFileString
       */
      public static void copyFile(String srcFileString, String desFileString) {
          File srcFileFile = new File(srcFileString);
          File desFileFile = new File(desFileString);
  
          try (BufferedInputStream in = new BufferedInputStream(new FileInputStream(srcFileFile));
                  BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(desFileFile))) {
  
              // 尚未进行覆盖判断 bad
              byte[] buffer = new byte[BUFFERSIZE];
              int len;
              while ((len = in.read(buffer)) != -1) {
                  out.write(buffer, 0, len);
              }
              out.flush();
          } catch (IOException e) {
              logger.error("copy file exception", e);
          }
          logger.info("Success to copy {} to {}", srcFileString, desFileString);
      }
  
      /**
       * 复制文件夹
       * 
       * @param srcDirString
       * @param desDirString
       * @throws IOException
       */
      public static void copyDirectory(String srcDirString, String desDirString) {
          File srcDirFile = new File(srcDirString);
          File desDirFile = new File(desDirString);
          if (!desDirFile.exists()) {
              boolean ret = desDirFile.mkdirs();
              if (!ret) {
                  logger.error("mkidrs failed: " + desDirFile);
                  return;
              }
          }
  
          File[] files = srcDirFile.listFiles();
          if (files == null) {
              return;
          }
          for (int i = 0; i < files.length; i++) {
              if (files[i].isFile()) {
                  String srcFileTemp = files[i].getAbsolutePath();
                  String desFileTemp = desDirFile.getAbsolutePath() + File.separator + files[i].getName();
                  copyFile(srcFileTemp, desFileTemp);
              }
              if (files[i].isDirectory()) {
                  String srcDirTemp = files[i].getAbsolutePath();
                  String desDirTemp = desDirFile.getAbsolutePath() + File.separator + files[i].getName();
                  copyDirectory(srcDirTemp, desDirTemp);
              }
          }
          System.out.println("Success to copy " + srcDirString + " to " + desDirString);
      }
  
      /**
       * 移动文件
       * 
       * @param srcFileString
       * @param desFileString
       * @param isOverride
       * @throws IOException
       */
      public static void moveFile(String srcFileString, String desFileString, boolean isOverride) {
          File srcFileFile = new File(srcFileString);
         File desFileFile = new File(desFileString);
         if (isOverride) {
             if (desFileFile.delete()) {
                 System.out.println("Success to delete desFile");
             }
         } else {
             return;
         }
         copyFile(srcFileString, desFileString);
         if (srcFileFile.delete()) {
             System.out.println("Success to delete srcFile");
         }
 
     }
 
     /**
      * 递归删除目录
      * 
      * @param dir
      * @return 返回是否删除成功
      */
     public static boolean deleteDir(String dir) {
         File dirFile = new File(dir);
         if (dirFile.isDirectory()) {
             String[] files = dirFile.list();
             if (files != null) {
                 for (int i = 0; i < files.length; i++) {
                     String temp = dirFile.getAbsolutePath() + File.separator.toString() + files[i];
                     boolean success = deleteDir(temp);
                     if (!success) {
                         System.out.println("Something error!");
                         return false;
                     }
                 }
             }
         }
         boolean ret = dirFile.delete();
         if (ret) {
             System.out.println("Success to delete " + dir);
         } else {
             System.out.println("Something error!");
         }
         return ret;
     }
 
     /**
      * 删除目录组
      * 
      * @param dirs
      * @return 返回是否删除成功
      */
     public static boolean deleteDirs(String[] dirs) {
         for (int i = 0; i < dirs.length; i++) {
             boolean isSuccessful = deleteDir(dirs[i]);
             if (isSuccessful == true) {
                 System.out.println("成功删除目录：" + dirs[i]);
             }
         }
         return false;
     }
 }