using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace ChatBlocker
{
    class Program
    {
        static void Main(string[] args)
        {
            Menu();
        }
        static void Menu()
        {
            int id = 0;
            string[] lines = { "127.0.0.1 chat.na1.lol.riotgames.com", "127.0.0.1 chat.eu.lol.riotgames.com", "127.0.0.1 chat.eun1.lol.riotgames.com" };
            while (true)
            {
                switch (id)
                {
                    case 1:
                        {
                            Console.Clear();
                            try
                            {

                                FileStream file = new FileStream(System.Environment.SystemDirectory+ @"\drivers\etc\hosts", FileMode.Append, FileAccess.Write, FileShare.ReadWrite);
                                foreach (string line in lines)
                                {
                                    byte[] message = Encoding.ASCII.GetBytes("\n"+line+"\n");
                                    file.Write(message, 0, message.Length);
                                }
                                file.Close();
                            }
                            catch (Exception e)
                            {
                                Console.WriteLine(e.Message);
                                Console.WriteLine("Unable to open file, is it open by any other program?");
                                Console.WriteLine("Press any button to go back to the menu");
                                Console.Read();
                                id = 0;
                                break;
                            }
                            Console.WriteLine("Succesfully wrote to hosts file!");
                            Console.WriteLine("Press any button to go back to the menu");
                            Console.Read();
                            id = 0;
                            break;
                        }
                    case 2:
                        {
                            Console.Clear();
                            try
                            {
                                string[] alllines = File.ReadAllLines(System.Environment.SystemDirectory + @"\drivers\etc\hosts");
                                List<string> list = new List<string>(alllines);
                                foreach (string line in lines)
                                {
                                    list.Remove(line);
                                }
                                list.RemoveAll(delegate(string line) { return line == ""; });
                                FileStream file = new FileStream(System.Environment.SystemDirectory + @"\drivers\etc\hosts", FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite);
                                foreach (string str in list)
                                {
                                    byte[] message = Encoding.ASCII.GetBytes(str+"\n");
                                    file.Write(message, 0, message.Length);
                                }
                                file.Close();
                            }
                            catch (Exception)
                            {
                                Console.WriteLine("Unable to open file, is it open by any other program?");
                                Console.WriteLine("Press any button to go back to the menu");
                                Console.Read();
                                id = 0;
                                break;
                            }
                            Console.WriteLine("Succesfully wrote to hosts file!");
                            Console.WriteLine("Press any button to go back to the menu");
                            Console.Read();
                            id = 0;
                            break;
                        }
                    case 3:
                        {
                            return;
                        }
                    default:
                        {
                            Console.Write("\n\n");
                            Console.WriteLine("Invisible Mode for League of Legends!");
                            Console.Write("\n\n");
                            Console.WriteLine("1. Enable Invisible Mode");
                            Console.WriteLine("2. Disable Invisible Mode");
                            Console.WriteLine("3. Exit\n");
                            try
                            {
                                id = Int32.Parse(Console.ReadLine());
                            }
                            catch (Exception)
                            {
                                Console.WriteLine("\n Please write a valid number!");
                            }
                            break;
                        }
                }
            }
        }
    }
}