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

namespace first_projekt
{
    class Message
    {
        private String UserName, Text;

        public Message(String username, String text)
        {
            UserName = username;
            Text = text;
        }

        public void Print()
        {
            Console.WriteLine("{0}:\t{1}", UserName, Text);
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            List<Message> history = new List<Message>();
            history.Add(new Message("Jakob", "Hey"));
            history.Add(new Message("Ivy", "Hey, what you want?"));
            history.Add(new Message("Jakob", "Nothing, sister ;p"));

            var Instruction = new Dictionary<String, String>();
            Instruction.Add(@"\exit", "Exit");
            Instruction.Add(@"\clear", "Clear consol");
            Instruction.Add(@"\histori", "Show message histori");

            var Users = new Dictionary<String, String>();
            Users.Add(@"Jakob", "Assassin");
            Users.Add(@"Ivy", "Assassin");

            String username = "";

            bool fl = false;
            while (fl == false)
            {
                Console.WriteLine("Enter '\\login' or '\\registrate'");
                String Text1 = Console.ReadLine().Trim();

                if (Text1 == "\\login")
                {
                    Console.Write("Enter your nickname: ");
                    string nickname = Console.ReadLine().Trim();
                    if (Users.ContainsKey(nickname))
                    {
                        Console.Write("Enter your password: ");
                        string password = Console.ReadLine();
                        if (Users.ContainsValue(password))
                        {
                            username = nickname;
                            Console.WriteLine("Hello, {0}", username);
                            fl = true;
                            continue;
                        }
                        else
                        {
                            Console.Clear();
                            Console.WriteLine("Wrong password!!\n");
                            continue;
                        }
                    }
                    else
                    {
                        Console.Clear();
                        Console.WriteLine("Wrong nickname!!\n");
                        continue;
                    }
                }
                else
                if (Text1 == "\\registrate")
                {
                    Console.Write("Enter your nickname: ");
                    string nickname = Console.ReadLine().Trim();
                    Console.Write("Enter your password: ");
                    string password = Console.ReadLine();
                    Users.Add(nickname, password);
                    username = nickname;
                    Console.WriteLine("Hello, {0}", username);
                    fl = true;
                    continue;
                }
                else {
                    Console.Clear();
                    Console.WriteLine("Error!!\n");
                }
            }

            ShowInstructions(Instruction);

            foreach (Message message in history)
            {
                message.Print();
            }
            while (true)
            {
                Console.Write("> ");
                String text = Console.ReadLine().Trim();

                if (text.Length == 0)
                {
                    ClearConsoleLines(1);
                    continue;
                }

                if (text == "\\exit")
                {
                    break;
                }

                if (text == "\\clear")
                {
                    Console.Clear();
                    continue;
                }

                if (text == "\\histori")
                {
                    foreach (Message message in history)
                    {
                        message.Print();
                    }
                    continue;
                }

                Message usermessage = new Message(username, text);
                history.Add(usermessage);

                int line = (int)((text.Length + 2) / Console.WindowHeight) + 1;
                ClearConsoleLines(line);
                Console.WriteLine("Sending message. ");
                Thread.Sleep(700);
                ClearConsoleLines(1);
                Console.WriteLine("Sending message.. ");
                Thread.Sleep(700);
                ClearConsoleLines(1);
                Console.WriteLine("Sending message... ");
                Thread.Sleep(700);
                ClearConsoleLines(1);
                usermessage.Print();
            }
        }

        public static void ClearConsoleLines(int Line)
        {
            Console.SetCursorPosition(0, Console.CursorTop - Line);
            Console.Write(new String(' ', Console.WindowWidth*Line));
            Console.SetCursorPosition(0, Console.CursorTop - Line);
        }

        public static void ShowInstructions(Dictionary<String, String> Instructions)
        {
            Console.WriteLine("\nType:\n");
            foreach (KeyValuePair<String, String> instruction in Instructions)
            {
                Console.WriteLine("\t{0} - {1}\n", instruction.Key, instruction.Value);
            }
        }
    }
}