package com.service;


import java.io.File;

import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;

import com.utils.ConstConfig;

public class FileUtil {
    private transient final static Logger log = LogManager.getLogger(FileUtil.class);

    /**
     * 删除文件夹 param folderPath 文件夹完整绝对路径
     */
    public static void delFolder(String folderPath) {
        try {
            delAllFile(folderPath, true); // 删除完里面所有内容
            String filePath = folderPath;
            filePath = filePath.toString();
            java.io.File myFilePath = new java.io.File(filePath);
            myFilePath.delete(); // 删除空文件夹
        }
        catch (Exception e) {
            log.error("删除文件夹出错！" + e.getMessage());
        }
    }

    /**
     * 删除指定文件夹下所有文件 param path 文件夹完整绝对路径 param folderFlag 是否删除里面的文件夹
     */
    public static boolean delAllFile(String path, boolean folderFlag) {
        boolean flag = false;
        File file = new File(path);
        if (!file.exists()) {
            return flag;
        }
        if (!file.isDirectory()) {
            return flag;
        }
        String[] tempList = file.list();
        File temp = null;
        for (int i = 0; i < tempList.length; i++) {
            if (path.endsWith(File.separator)) {
                temp = new File(path + tempList[i]);
            }
            else {
                temp = new File(path + File.separator + tempList[i]);
            }
            if (temp.isFile()) {
                temp.delete();
            }
            if (folderFlag && temp.isDirectory()) {
                delAllFile(path + "/" + tempList[i], true);// 先删除文件夹里面的文件
                delFolder(path + "/" + tempList[i]);// 再删除空文件夹
                flag = true;
            }
        }
        flag = true;

        return flag;
    }

    /**
     * 删除指定文件夹下所有文件 param path 文件夹完整绝对路径 param folderFlag 是否删除里面的文件夹
     */
    public static boolean delAllFileByFolderName(String path, String folderName, boolean folderFlag) {
        boolean flag = false;
        File file = new File(path);
        if (!file.exists()) {
            return flag;
        }
        if (!file.isDirectory()) {
            return flag;
        }
        String[] tempList = file.list();
        File temp = null;
        for (int i = 0; i < tempList.length; i++) {
            if (path.endsWith(File.separator)) {
                temp = new File(path + tempList[i]);
            }
            else {
                temp = new File(path + File.separator + tempList[i]);
            }
            if (folderFlag && temp.isDirectory() && temp.getName().endsWith(folderName)) {
                delAllFile(path + "/" + tempList[i], true);// 先删除文件夹里面的文件
                delFolder(path + "/" + tempList[i]);// 再删除空文件夹
                flag = true;
            }
            else {
                delAllFileByFolderName(temp.getPath(), folderName, folderFlag);
            }
        }
        flag = true;

        return flag;
    }

    public static void main(String[] args) {
    	String event = "delete folder path:"+ConstConfig.DELETE_PATH+"目录下的所有名称为"+ConstConfig.FOLDER_NAME+"文件夹";
        try {
			delAllFileByFolderName(ConstConfig.DELETE_PATH, ConstConfig.FOLDER_NAME, true);
		} catch (Exception e) {
			log.error(event+" 失败!");
		}
        log.info(event+" 成功!");
    }

    /**
     * 删除指定时间前的文件
     * <p>
     * Title: delFile
     * </p>
     * <p>
     * Description:
     * </p>
     * 
     * @param path
     * @param time
     * @return
     */
    public static boolean delFile(String path, Long time) {
        boolean flag = false;
        File file = new File(path);
        if (!file.exists()) {
            file.mkdirs();
            return flag;
        }
        if (!file.isDirectory()) {
            return flag;
        }
        String[] tempList = file.list();
        File temp = null;
        for (int i = 0; i < tempList.length; i++) {

            if (path.endsWith(File.separator)) {
                temp = new File(path + tempList[i]);
            }
            else {
                temp = new File(path + File.separator + tempList[i]);
            }
            if (temp.isFile()) {
                if (time != null && temp.lastModified() < time) {
                    temp.delete();
                }
            }
        }
        flag = true;

        return flag;
    }

    /**
     * 在指定路径下寻找文件
     * 
     * @param path
     * @param fileName
     * @return 文件路径
     */
    public static String findFile(String path, String fileName) {
        File[] files = new File(path).listFiles();
        for (int i = 0; i < files.length; i++) {
            if (files[i].getName().equals(fileName)) {
                // System.out.println(files[i].getAbsolutePath());
                return files[i].getAbsolutePath();
            }
            else {
                if (files[i].isDirectory()) {
                    String destFileName = findFile(files[i].getAbsolutePath(), fileName);
                    if (destFileName != null) {
                        return destFileName;
                    }
                }
            }
        }
        return null;
    }

    public static String standardFilePath(String filePath) {
        if (filePath == null || filePath.trim().equals(""))
            return filePath;
        filePath = filePath.trim();
        if (File.separator.equals("\\")) {
            filePath = replaceAll(filePath, "/", "\\");
            filePath = replaceAll(filePath, "\\\\", "\\");
        }
        else if (File.separator.equals("/")) {
            filePath = replaceAll(filePath, "\\", "/");
            filePath = replaceAll(filePath, "//", "/");
        }
        return filePath;
    }

    public static String replaceAll(String str, String src, String dest) {
        if (str == null || src == null || dest == null || str.equals("") || src.equals(""))
            return str;
        int lensrc = src.length();
        for (int idx = str.indexOf(src); idx >= 0; idx = str.indexOf(src))
            str = (new StringBuilder()).append(str.substring(0, idx)).append(dest).append(str.substring(idx + lensrc))
                    .toString();

        return str;
    }
}