package com.android.chmo.utils;

import android.content.Context;

import com.android.chmo.app.ChmoApplication;

import java.io.File;
import java.io.FileInputStream;
import java.text.DecimalFormat;

/**
 * 文件或文件夹操作工具类
 *
 * @author Hunter
 */
public class FileInfoUtils {
    /**
     * 返回自定文件或文件夹的大小
     *
     * @param f
     * @return
     * @throws Exception
     */
    public static long getFileSizes(File f) throws Exception {// 取得文件大小
        long s = 0;
        if (f.exists()) {
            FileInputStream fis = new FileInputStream(f);
            s = fis.available();
            fis.close();
        } else {
            f.createNewFile();
            System.out.println("文件不存在");
        }
        return s;
    }

    // 递归
    public static long getFileSize(File f) throws Exception// 取得文件夹大小
    {
        long size = 0;
        File flist[] = f.listFiles();
        for (int i = 0; i < flist.length; i++) {
            if (flist[i].isDirectory()) {
                size = size + getFileSize(flist[i]);
            } else {
                size = size + flist[i].length();
            }
        }
        return size;
    }

    public static String FormetFileSize(long fileS) {// 转换文件大小
        DecimalFormat df = new DecimalFormat("#0.00");
        String fileSizeString = "";
        if (fileS < 1024) {
            fileSizeString = df.format((double) fileS) + "B";
        } else if (fileS < 1048576) {
            fileSizeString = df.format((double) fileS / 1024) + "K";
        } else if (fileS < 1073741824) {
            fileSizeString = df.format((double) fileS / 1048576) + "M";
        } else {
            fileSizeString = df.format((double) fileS / 1073741824) + "G";
        }
        return fileSizeString;
    }

    public static long getlist(File f) {// 递归求取目录文件个数
        long size = 0;
        File flist[] = f.listFiles();
        size = flist.length;
        for (int i = 0; i < flist.length; i++) {
            if (flist[i].isDirectory()) {
                size = size + getlist(flist[i]);
                size--;
            }
        }
        return size;

    }

    public static String getPhotoPath(Context context) {
        String filename = System.currentTimeMillis() + ".jpg";
       String path = ChmoApplication.getAppCacheDir(context) + "/photo/"+ filename;
        File dir = new File(path).getParentFile();
        if (dir != null && !dir.exists()) {
            dir.mkdirs();
        }
        return path;
    }
}