package com.jf;

import javax.sound.midi.SysexMessage;
import java.awt.*;
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;
    }
    public static void write(File path) throws IOException {
        Boolean success=new File("result").mkdir();
        File temp=new File("result"+"\\"+path.getName()+".txt");
        boolean fr=temp.createNewFile();
        FileWriter fw=new FileWriter(temp);
        fw.write("["+temp.getAbsolutePath()+"]"+" Result：\n\n");
        fw.write("File details:\n");
        directory.dfs(path,0,fw);
//        System.out.println("Total");
//        System.out.println(String.format("%10d",sumfiles)+"\tJava Files\t");
//        System.out.println(String.format("%10d",sumlines)+"\tlines in files\t");
//        System.out.println(String.format("%10d",sumblanks)+"\tblank lines\t");
//        System.out.println(String.format("%10d",sumbytes)+"\tbytes\t");
        fw.write("Total\n");
        fw.write(String.format("%10d",sumfiles)+"\tJava Files\t\n");
        fw.write(String.format("%10d",sumlines)+"\tlines in files\t\n");
        fw.write(String.format("%10d",sumblanks)+"\tblank lines\t\n");
        fw.write(String.format("%10d",sumbytes)+"\tbytes\t\n");
        fw.close();
    }

    static void dfs(File path, int cnt,FileWriter fw) throws IOException {
        for(int i=1;i<=cnt*4;i++) {
//            System.out.print(" ");
            fw.write(" ");
        }
       // fw.write("\n");
        if (isjava(path)) {
//            System.out.print("-"+path.getName());
            fw.write("-"+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");
            fw.write("\tTotal:\t" + String.format("%5d", lines) + ", Blank:\t"
                    + String.format("%5d",blanks) + ",\t" + String.format("%5d", bytes)
                    + " Bytes"+"\n");
            return;
        }
        File[] files = path.listFiles();
        if(files==null) return;
        sortpaths(files);
//        System.out.println("+"+path.getName());
        fw.write("+"+path.getName()+"\n");
        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 Menu{
    public void showmenu() throws IOException {
        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：");
        Scanner sc=new Scanner(System.in);
        int op=sc.nextInt();
        File path=null;
        if (op == 1) {
            System.out.println("请输入目录名称");
            String dir=sc.next();
             path = new File(dir);
            if (path.isDirectory()) {
                directory.write(path);
                //System.out.println("程序分析完毕");
            } else {
                System.out.println("错误：[" + dir + "]" + "不是目录名或不存在");
            }
        }
        else{
            File temp=new File("result");
            File[] files=temp.listFiles();
            if(files!=null){
                System.out.println("可以查看的结果文件有:");
                System.out.println("----------------");
                for(int i=0;i<files.length;i++){
                    System.out.println(i+1+"."+files[i].getName());
                }
                System.out.println("----------------");
                System.out.println("选择要查看的结果文件(0表示放弃):");
                int ch=sc.nextInt();
                if(ch==0){
                    return;
                }
                printfile(files[ch-1]);

            }
            else{
                System.out.println("还没有分析结果");
            }
        }
    }
    public void printfile(File t) throws IOException {
        BufferedReader br=new BufferedReader(new FileReader(t));
        String line;
        while((line=br.readLine())!=null){
            System.out.println(line);
        }
    }
}
public class Main {

    public static void main(String[] args) throws IOException {
        Menu menu=new Menu();
        menu.showmenu();
        System.out.println("程序运行结束");
    }
}