package o1.peeveli

import GameState.Unrevealed



class GameState(val missesAllowed: Int, val previousGuesses: String, val visibleWord: String, val possibleSolutions: Vector[String])  {



  def this(missesAllowed: Int, length: Int, vocabulary: Vector[String]) = {
    this(missesAllowed, "", Unrevealed.toString * length, vocabulary.map( _.toUpperCase )) // This means: pass these parameters to the "default constructor" defined in the class header.
  }



  def wordLength = this.visibleWord.length


  def numberOfSolutions = possibleSolutions.size


  def isLost: Boolean = missesAllowed == -1


  def isWon = !this.isLost && !this.visibleWord.contains("_")



  private def reveal(patternToReveal: String) = {
   var muuttuvaPattern = patternToReveal
   var kirjaimet = patternToReveal.filter(_ != '_')
   var uusiSana = visibleWord


   while(kirjaimet.size != 0) {

   var indeksi = muuttuvaPattern.indexOf(kirjaimet.head)
   uusiSana = uusiSana.updated(indeksi, kirjaimet.head)
   kirjaimet = kirjaimet.drop(1)
   muuttuvaPattern = muuttuvaPattern.updated(indeksi, "/".head)


   }

 uusiSana



  }

  def guessLetter(guess: Char) = {
    val actualGuess = guess.toUpper
    val solutions =  this.possibleSolutions.filter(!_.contains(actualGuess))
    val solution1 = { possibleSolutions.map(_.map(n => if(n==actualGuess)n else Unrevealed)).groupBy(dir => dir).toVector.sortBy(pari => -pari._2.size)   }

    val exampleSolution = solution1.head._1

    var success = exampleSolution.contains(actualGuess)

    val uusi = reveal(exampleSolution)
    val newPossible = possibleSolutions.filter(exampleSolution == _.map(s => if(s==actualGuess)s else Unrevealed))

     if (success) new GameState(this.missesAllowed, this.previousGuesses + actualGuess, uusi, newPossible) else new GameState(missesAllowed-1, this.previousGuesses + actualGuess, visibleWord, solutions)

  }



  override def toString =
    this.visibleWord + ", " +
      "missed guesses allowed: " + this.missesAllowed + ", " +
      "guesses made: " + (if (this.previousGuesses.isEmpty) "none" else this.previousGuesses) + ", " +
      "solutions left: " + this.numberOfSolutions

}



object GameState {


  val Unrevealed = '_'

}