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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("HANGMAN \r");

            Console.WriteLine("Are you ready to play?");
            Console.WriteLine("You have 6 guesses. \n");

            bool keepPlaying = true;
            
            do
            {

                Random r = new Random();
                int secret_number = r.Next(0, 9);

                string[] words = {"CLAYTON", "INFORMATION", "TECHNOLOGY", "PROGRAMMING",
                                 "CIMS", "OBJECTS", "CLASSES", "ARRAYS", "RECURSION",
                                 "STRINGS"};

                string gameWord = words[secret_number];

                //string gameWord = "CLAYTON";

                        
            int numOfGuesses = 6;

            //creates an array that is filled with *'s for display
            //if user guesses correct letter, * in that position is replaced with guess
            char[] displayArray = new char[gameWord.Length];
            for (int counter = 0; counter < displayArray.Length; counter++)
            { displayArray[counter] = '*'; }

            Console.WriteLine();
            
            //creates an array of letters from which to choose
            char[] letterChoices = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
                                    'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
                                    'U', 'V', 'W', 'X', 'Y', 'Z'};
      
            //fills display array with *'s.
            for (int counter = 0; counter < displayArray.Length; counter++)
            { displayArray[counter] = '*'; }


            while (numOfGuesses > 0)
            {
                Console.WriteLine("Enter your guess");
                char guessLetter = Convert.ToChar(Console.ReadLine());
                Console.WriteLine();

               
                //if guessed letter has been guessed before, the user is given a message.
                string usedLetters = new string(letterChoices);
                
                if (usedLetters.IndexOf(guessLetter) == -1)

                { Console.WriteLine("You've already guessed {0}!  Guess another letter!\n", guessLetter); }


                //if not guessed before, replace letter guessed with * 
                for (int letterCount = 0; letterCount < letterChoices.Length; letterCount++)
                    if (guessLetter == letterChoices[letterCount])
                    { letterChoices[letterCount] = '*'; }
                 
                               
                //determines if guessed letter is in word or not.
                if (gameWord.IndexOf(guessLetter) == -1)
                {
                    numOfGuesses--;
                    Console.WriteLine(guessLetter + " is NOT in the word!\n");
                    
                }
                else
                {
                    Console.WriteLine("YES! {0} is in the word!", guessLetter);
                    
                }

                //prints out letters left that user can guess.
                Console.WriteLine("The following letters are left to chose from:");
                for (int letterCount2 = 0; letterCount2 < letterChoices.Length; letterCount2++)
                { Console.Write(letterChoices[letterCount2] + "\t"); }
                Console.WriteLine();
                Console.WriteLine();

                Console.WriteLine("Your word now looks like this:");

                //replaces * in display with correct guessed letter.
                for (int counter = 0; counter < displayArray.Length; counter++)
                {
                    if (guessLetter == gameWord[counter])
                    {
                        displayArray[counter] = guessLetter;
                        //Console.WriteLine();
                        //Console.WriteLine();
                    }
                }

                //prints out display
                for (int counter = 0; counter < displayArray.Length; counter++)

                { 
                    Console.Write(displayArray[counter]); 
                }
                Console.WriteLine();

                //display number of guesses left
                Console.WriteLine();
                Console.WriteLine("You have {0} guesses left!", numOfGuesses);
                Console.WriteLine();
                Console.WriteLine("************************************************************************");

                //if user guesses word, displays win message
                //no * in display array

                string correctAnswer = new string(displayArray);
                if (correctAnswer == gameWord)

                    
                    { Console.WriteLine("Congratulations!  You win!!!!!");
                    numOfGuesses = 0;
                    }

                else if
                    ((correctAnswer != gameWord) && (numOfGuesses == 0))
                        Console.WriteLine("Sorry, you lose!");


                





            }

            
            
            // determine if the user wants to play again
                Console.Write("Would you like to play again (Y/N)? ");
                string user_choice = Console.ReadLine();

                if (user_choice.ToUpper().StartsWith("Y"))
                    keepPlaying = true;
                else
                    keepPlaying = false;

            } while (keepPlaying);
                    
                    

                

            
            
            

            Console.WriteLine();
                






        }
    }
}