//Allow to input a guess from outside od the dll (from the ui)
public bool Guess(char letter)
{
bool res = false;
//validate the input
if (!ValidateLetter(letter))
{
//if not valid, do not cotinue and throw an argument exception
throw new ArgumentException($"{letter} is not a valid English letter");
}
//use upper case letters only
char upperLetter = char.ToUpper(letter);
//check if the game is active and that the letter is available to guess
if (IsGameActive && GamePlayer.IsAvaileableToGuess(upperLetter))
{
//guess the letter in two places,
//in the word model
//res will be the flag that will tell the user of the class if he was successful in his guess
res = WordToGuess.Guess(upperLetter);
//in the Player model
GamePlayer.Guess(upperLetter, res);
//check if the game is done(player guessed the entire word)
if (WordToGuess.IsComplete)
{
//acitvate the win game method(holds instructions for the end of the game)
WinGame();
//return sucsessfull guess and exit the method
return(true);
}
//the guess was unsuccessful
if (!res)
{
//update the hang man status
HangedManStatus++;
}
}
return(res);
}