Lab 1

using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CS_Lab_1
{
    class MusicList
    {
        private static  string  path = AppDomain.CurrentDomain.BaseDirectory + "\\MusicList";
        public class Music : MusicList
        {
            public string MusicAuthor;
            public string MusicName;
            public string FullMusicName;
        }
        public static Music[] Musics;

        public  static  void    CreateFile()
        {
            if (!File.Exists(path))
            {
                using (FileStream FS = File.Create(path));
            }

        }

        public  static  void    OutAllMusicTracks()
        {
            string[] TempArray;
            using (FileStream FS = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.Read))
            {
                TempArray = File.ReadAllLines(path);
                Console.WriteLine("Musics:");
                foreach (string TempString in TempArray)
                {
                    Console.WriteLine("\t" + TempString);
                }
            }
        }

        public  static  void    SearchInMusicList()
        {
            string InputString;
            string[] TempArray;
            bool isFoinded = false;
            using (FileStream FS = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.Read))
            {
                Console.Write("Input something: ");
                TempArray = File.ReadAllLines(path);
                if (!String.IsNullOrWhiteSpace(InputString = Console.ReadLine()))
                {
                    foreach (string TempString in TempArray)
                    {
                        if (TempString.Contains(InputString))
                        {
                            if (!isFoinded) {
                                Console.WriteLine("Founded:");
                                isFoinded = true;
                            }
                            Console.WriteLine("\t" + TempString + "");
                        }
                    }
                }
                if (!isFoinded)
                {
                    Console.WriteLine("Not Founded =(");
                    return;
                }
            }
        }
        
        public  static  void    AddToMusicList()
        {
            Music AddingMusic = new Music();
            string TempString;
            Console.Write("Input autor\'s name: ");
            if (!String.IsNullOrWhiteSpace(TempString = Console.ReadLine()))
            {
                AddingMusic.MusicAuthor = TempString;
                Console.Write("Input the composition\'s name: ");
                TempString = null;
                if (!String.IsNullOrWhiteSpace(TempString = Console.ReadLine()))
                {
                    AddingMusic.MusicName = TempString;
                    AddingMusic.FullMusicName = AddingMusic.MusicAuthor + " - " + AddingMusic.MusicName + "\n";
                    File.AppendAllText(path, AddingMusic.FullMusicName);
                    return;
                }
            }
            Console.WriteLine("Input something!");
            return;
        }

        public  static  void    DeleteFromMusicList()
        {
            string InputString;
            string[] TempArray;
            int Counter = 0;
            Console.Write("Input the full name of the track: ");
            if (!String.IsNullOrWhiteSpace(InputString = Console.ReadLine()))
            {
                TempArray = File.ReadAllLines(path);
                foreach (string TempString in TempArray)
                {
                    if (TempString.Equals(InputString))
                    {
                        File.WriteAllText(path, "");
                        for (int i = 0; i < TempArray.Length; i++)
                        {
                            if (i != Counter)
                            {
                                File.AppendAllText(path, TempArray[i] + "\n");
                            }
                        }
                        return;
                    }
                    if (Counter == TempArray.Length - 1)
                    {
                        Console.WriteLine("Not founded =(");
                    }
                    Counter++;
                }

            }
            else
            {
                Console.WriteLine("Input something!");
            }
            return;
        }

    }

    class Program
    {
        static  void    Main(string[] args)
        {

            bool isExit = false;
            string commandName;
            MusicList Musics = new MusicList();
            MusicList.CreateFile();
            Console.WriteLine("Usage:" + 
                              "\t\"list\"   - to display all items of catalog"+
                              "\t\"search\" - to go find ites in catalog"     +
                              "\t\"add\"    - to add new item"                +
                              "\t\"del\"    - to remove some item from list"  +
                              "\t\"quit\"   - to exit");
            while (!isExit)
            {
                Console.Write("Input the command: ");
                commandName = Console.ReadLine();
                if (String.IsNullOrEmpty(commandName))
                {
                    Console.WriteLine("Input somthing!");
                    continue;
                }
                switch (commandName)
                {
                    case "list":
                        MusicList.OutAllMusicTracks();
                        break;
                    case "search":
                        MusicList.SearchInMusicList();
                        break;
                    case "add":
                        MusicList.AddToMusicList();
                        break;
                    case "del":
                        MusicList.DeleteFromMusicList();
                        break;
                    case "quit":
                        isExit = true;
                        break;
                    default:
                        Console.WriteLine("Input is wrong, please try again!");
                        break;
                }


            }

        }
    }
}