using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace Explorer
{
    class Program
    {
        static void Main(string[] args)
        {
            string in_str = "";
            if (args.Length == 0)
            {
                Console.Beep(4000, 500);
                Console.Title = "文件浏览";
                Console.WriteLine("[ 文件浏览 Ver=1.3 Author=吕舒君 Website=https://cszj.wang/ ]");
                Console.Write("输入文件或文件夹路径：");
                in_str = Console.ReadLine();
            }
            else
            {
                in_str = args[0];
            }
            if (!Path.HasExtension(in_str))
            {
                Console.WriteLine();
                Console.WriteLine("{0}是一个文件夹路径，请选择操作：", in_str);
                Console.WriteLine(" 【1】直接打开");
                Console.WriteLine(" 【2】在此处浏览处理文件");
                Console.WriteLine(" 【E】退出");
                switch (Console.ReadLine())
                {
                    case "1":
                        //打开文件资源管理器，浏览指定文件夹
                        Process.Start(System.Environment.GetFolderPath(Environment.SpecialFolder.System) + "\\explorer.exe", in_str);
                        break;
                    case "2":
                        Console.WriteLine();
                        DirectoryInfo directory = new DirectoryInfo(in_str);
                        Console.WriteLine("【文件夹信息】创建时间：{0}", directory.CreationTime.ToLocalTime().ToString());
                        int p = 1;
                        foreach(DirectoryInfo a in directory.GetDirectories())
                        {
                            Console.WriteLine(" 【{0:00}】{1}", p, a.FullName.Substring(a.FullName.LastIndexOf("\\")));
                            p++;
                        }
                        int c = p;
                        foreach (FileInfo a in directory.GetFiles())
                        {
                            Console.WriteLine(" 【{0:00}】{1}", p, a.FullName.Substring(a.FullName.LastIndexOf("\\")));
                            p++;
                        }
                        int IN = Convert.ToInt32(Console.ReadLine());
                        if (IN > p)
                        {
                            Console.WriteLine("编号错误");
                            string[] ccw = { in_str };
                            Main(ccw);
                        }
                        else if (IN >= c)
                        {
                            //文件
                            string[] cn = { directory.GetFiles()[IN - c].FullName };
                            Main(cn);
                        }
                        else
                        {
                            //文件夹
                            string[] cn = { directory.GetDirectories()[IN - 1].FullName };
                            Main(cn);
                        }
                        break;
                    case "E":
                        Environment.Exit(0);
                        break;
                    default:
                        Console.WriteLine("输入有误");
                        string[] cc = { in_str };
                        Main(cc);
                        break;
                }
            }
            else
            {
                Console.WriteLine();
                Console.WriteLine("{0}是一个文件，请选择操作：", in_str);
                Console.WriteLine(" 【1】直接打开");
                Console.WriteLine(" 【2】打开文件资源管理器，选中指定文件");
                Console.WriteLine(" 【E】退出");
                switch (Console.ReadLine())
                {
                    case "1":
                        //打开文件资源管理器，浏览指定文件
                        Process.Start(System.Environment.GetFolderPath(Environment.SpecialFolder.System) + "\\explorer.exe", in_str);
                        break;
                    case "2":
                        //打开文件资源管理器，选中指定文件
                        Process.Start(System.Environment.GetFolderPath(Environment.SpecialFolder.System) + "\\explorer.exe", "/select, " + in_str);
                        break;
                    case "E":
                        Environment.Exit(0);
                        break;
                    default:
                        Console.WriteLine("输入有误");
                        string[] cc = { in_str };
                        Main(cc);
                        break;
                }
            }
            Console.WriteLine();
            Console.WriteLine("所有操作已结束，请选择(若还未执行操作，请稍作等候)", in_str);
            Console.WriteLine(" 【1】退出");
            Console.WriteLine(" 【2】继续");
            switch (Console.ReadLine())
            {
                case "1":
                    Environment.Exit(0);
                    break;
                case "2":
                    Console.Clear();
                    Main(new string[0]);
                    break;
                default:
                    Environment.Exit(0);
                    break;
            }
        }
    }
}