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

namespace Hangmann
{
    class GameEngine
    {
        private string _sentence;
        private string _sentenceToLowerSpace;
        private int _live;
        private int _operation;
        private string path = @"plik.txt";

        public GameEngine()
        {
            _sentence = RandomWord(path);
            _sentenceToLowerSpace = ToLowerSpace(_sentence);
            _live = 5;
        }

        public void Menu()
        {
            do
            {
                Console.WriteLine("1)Play gamen2)Show list of passwordsn3)Add passwordn4)Delete passwordn5)ExitnChoose your operation: ");
                _operation = Convert.ToInt32(Console.ReadLine());
                if (_operation > 1 || _operation < 5)
                {
                    switch (_operation)
                    {
                        case 1:
                            var game = new GameEngine();
                            game.PlayGame();
                            Clear();
                            break;
                        case 2:
                            ShowListOfPasswords(path);
                            Console.WriteLine("Press any key to go back");
                            Console.ReadLine();
                            break;
                        case 3:
                            AddPassword(path);
                            break;
                        case 4:
                            DeletePassword(path);
                            break;
                        case 5:
                            Console.WriteLine("You exit");
                            break;
                    }
                }
                else
                {
                    Clear();
                    Console.WriteLine($"Wrong operation!");
                    Wait(1500);
                }

                Clear();
            } while (_operation != 5);
        }

        public void PlayGame()
        {
            char c;
            Clear();
            while (!IsSame())
            {
                Console.WriteLine($"Sentence: {_sentenceToLowerSpace}nLive: {_live}");
                Console.Write("Put 1 letter: ");
                c = Convert.ToChar(Console.ReadLine());
                if(c==1)
                if (IsContain(c))
                {
                    PutLetter(c);

                    if (_live == 0)
                    {
                        Clear();
                        Console.WriteLine("Game over!");
                        Wait(2000);
                        break;
                    }
                    else if (IsSame())
                    {
                        Clear();
                        Console.WriteLine("You Win!");
                        Wait(1000);
                    }
                    Wait(200);
                }
                else
                {
                    _live--;

                    if (_live == 0)
                    {
                        Clear();
                        Console.WriteLine("Game over!");
                        Wait(2000);
                        break;
                    }
                }
                
                Clear();

            }
        }

        public void PutLetter(char c)
        {
            char[] sentence = _sentence.ToCharArray();
            char[] sentenceToLower = _sentenceToLowerSpace.ToCharArray();
            _sentenceToLowerSpace = "";

            for(int i = 0; i < sentenceToLower.Length; i++)
            {
                if (sentenceToLower[i] == c)
                    _live--;

                if (c == sentence[i])
                {
                    sentenceToLower[i] = c;
                }
            }
            
            for(int i = 0; i < sentenceToLower.Length; i++)
            {
                _sentenceToLowerSpace += sentenceToLower[i];
            }
        }
        public bool IsContain(char c)
        {
            char[] arrChar = _sentence.ToCharArray();

            for(int i = 0; i < arrChar.Length; i++)
            {
                if (c == arrChar[i])
                {
                    return true;
                }
            }

            return false;
        }
        public string RandomWord(string path)
        {
            Random rnd = new Random();
            var words = new List<string>(File.ReadAllLines(path));
            int randomNumber = rnd.Next(words.Count);

            return words[randomNumber];
        }
        public string ToLowerSpace(string sentence)
        {
            string outPut="";

            for(int i = 0; i <sentence.Length; i++)
            {
                outPut += "_";
            }

            return outPut;
        }

        private void ShowListOfPasswords(string path)
        {
            int i = 1;
            List<string> pswds = new List <string>(File.ReadAllLines(path));

            Clear();
            foreach(var pswd in pswds)
            {
                Console.WriteLine($"{i++}) {pswd}");
            }
        }

        
        private void AddPassword(string path)
        {
            List<string> pswds = new List<string>(File.ReadAllLines(path));
            string pswd;

            ShowListOfPasswords(path);
            Console.Write("Put your password u want to add: ");
            pswd = Console.ReadLine();

            pswds.Add(pswd);

            File.WriteAllLines(path, pswds);

        }

        private void DeletePassword(string path)
        {
            List<string> pswds = new List<string>(File.ReadAllLines(path));
            int choice;

            ShowListOfPasswords(path);
            Console.Write("Press number of password u want to delete: ");
            choice = Convert.ToInt32(Console.ReadLine());

            pswds.RemoveAt(choice - 1);
            File.WriteAllLines(path, pswds);
        }
       
        public bool IsSame()
        {
            return _sentence == _sentenceToLowerSpace;
        }

        private void Clear()
        {
            Console.Clear();
        }

        private void Wait(int ms)
        {
            Thread.Sleep(ms);
        }
        public override string ToString()
        {
            return $"Sentence: {_sentence}nSentence: {_sentenceToLowerSpace}nLives: {_live}";
        }
    }
}