module FemisHangman
  class Game
    include(Message)
    attr_accessor :turns, :history, :word, :feedback, :status

    def initialize(difficulty, feedback)
      word = Word.new
      @word = word.generate(difficulty)
      @history = []
      @turns = 7 + difficulty
      @feedback = feedback
      @status = 'play'
    end

    def control(input)
      if input.size > 1 then commands(input)
      elsif input.size == 1 then play(input)
      else invalid_prompt
      end
    end

    def commands(input)
      case input
        when ':h', 'history' then print_text("You have used: #{game_history}")
        when ':q', 'quit' then quit_game
        else invalid_prompt
      end
    end

    def play(input)
      include_letter(input, @history)
      @turns -= 1 unless @word.include?(input)
      check_game
    end

    def include_letter(letter, history)
      if history.include?(letter)
        duplicate_prompt(letter)
        @history
      else
        history << letter
        @history = history
      end
    end

    def check_game
      if won? then game_won
      elsif lost? then game_lost
      else
        turns_prompt(@turns)
        puts show_word
      end
    end

    def show_word
      output = ''
      @word.split('').each do |letter|
        if @history.include?(letter)
          output << "#{letter} "
        else
          output << '_ '
        end
      end
      output
    end

    def won?
      length = 0
      @word.split('').each {|val| length += 1 if @history.include?(val)}
      if length == word.size then true
      else false
      end
    end

    def lost?
      @turns == 0
    end

    def game_won
      if @feedback == 2
        won_gui(@word)
      else
        won_prompt(@word)
      end
      replay_prompt
      @status = 'restart'
    end

    def game_lost
      if @feedback == 2
        lost_gui(@word)
      else
        lost_prompt(@word)
      end
      replay_prompt
      @status = 'restart'
    end

    def game_history
      if @history.empty?
        'NO LETTER YET'
      else
        output = ''
        @history.each {|letter| output << "#{letter} "}
      end
      output
    end

    def quit_game
      @status = 'quit'
      save_prompt
    end
  end
end