package com.jf;

import java.io.*;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;
class directory {
    static int sumfiles = 0;
    static int sumlines = 0;
    static int sumblanks = 0;
    static int sumbytes = 0;

    public static long getbytes(File file) {
        return file.length();
    }

    public static int getlines(File path) throws IOException {
        int res=0;
        BufferedReader br=new BufferedReader(new FileReader(path));
        String line;
        while((line= br.readLine())!=null){
            res++;
        }
        return res;
    }

    public static int getblanks(File path) throws IOException {
        int res=0;
        BufferedReader br=new BufferedReader(new FileReader(path));
        String line;
        while((line= br.readLine())!=null){
            if(line.equals("")) res++;
        }

        return res;
    }


    static void dfs(File path, int cnt, FileWriter fw) throws IOException {
        for(int i=1;i<=cnt*4;i++) System.out.print(" ");
        if (isjava(path)) {
            System.out.println("-"+path.getName());
            sumfiles++;
            int lines=getlines(path);
            sumlines+=lines;
            int blanks=getblanks(path);
            sumblanks+=blanks;
            long bytes=getbytes(path);
            sumbytes+=bytes;
            System.out.println("\tTotal:\t" + String.format("%5d", lines) + ", Blank:\t"
                    + String.format("%5d",blanks) + ",\t" + String.format("%5d", bytes)
                    + " Bytes");
            return;
        }
        File[] files = path.listFiles();
        sortpaths(files);
        System.out.println("+"+path.getName());
        for (int i = 0; i < files.length; i++) {
            dfs(files[i], cnt + 1, fw);
        }
    }
    public static boolean isjava(File file){
        String temp=file.toString();
        return temp.endsWith(".java");
    }
    public static void sortpaths(File[] files){
        Arrays.sort(files, new Comparator<File>() {
            @Override
            public int compare(File o1,File o2){
                if (o1.isFile() && o2.isFile()) {//同为文件，按字典序排序
                    return o1.getName().compareTo(o2.getName());
                } else if (o1.isDirectory() && o2.isDirectory()) {//同为目录，按字典序排序
                    return o1.getName().compareTo(o2.getName());
                } else if (o1.isDirectory() && o2.isFile()) {//目录“小于”文件，排在前面
                    return -1;
                } else if (o1.isFile() && o2.isDirectory()) {
                    return 1;
                }
                return 0;
}
 class work{
    public static void write(File path) throws IOException {
        Boolean success=new File(path+"\\result").mkdir();
        File temp=new File(path+"\\result"+"\\"+path.getName()+".txt");
        boolean fr=temp.createNewFile();
        FileWriter fw=new FileWriter(temp);
        fw.write("["+path.getAbsolutePath()+"]"+"Result：\n\n");
        fw.write("File details:\n");
        directory.dfs(path,0,fw);
        fw.close();
    }
}
public class Main {
    public static void show() {
        System.out.println("-----MENU-----");
        System.out.println("1.分析目录中的源程序文件");
        System.out.println("2.查看分析结果");
        System.out.println("0.退出程序");
        System.out.println("--------------");
        System.out.println("请选择：");
    }

    public static void main(String[] args) throws IOException {
        show();
        Scanner sc = new Scanner(System.in);
        //int op=sc.nextInt();
        int op = 1;
        if (op == 1) {
            System.out.println("请输入目录名称");
            //String dir=sc.next();
            String dir = "D:\\test";
            File path = new File(dir);
            if (path.isDirectory()) {
                work.write(path);
            } else {
                System.out.println("错误：[" + dir + "]" + "不是目录名或不存在");
            }
        }
    }
}