section-7-provided.rb

## Provided code for Guess The Word practice problem (section 7)

class GuessTheWordGame
    def initialize secret_word_class
      @secret_word_class = secret_word_class
      @game_over = false
      @secret_word_entered = false
      @mistakes_allowed = 9
    end
  
    def play
      puts "Welcome to Guess The Word!"
      while !@game_over
        tick!
      end
      if @secret_word.is_solved?
        puts "Congratulations, you won."
      else
        puts "Sorry, but you failed to guess the word."
        puts "It was:"
        puts @secret_word.word
      end
      puts "Thank you for playing."
    end
  
    private
  
    def tick!
      if @secret_word_entered
        ask_for_guessed_letter
      else
        ask_for_secret_word
      end
    end
  
    def ask_for_secret_word
      puts "Enter the secret word of phrase:"
      word = gets.chomp
      if is_valid_secret_word? word
        @secret_word_entered = true
      end
    end
  
    def ask_for_guessed_letter
      puts "Secret word:"
      puts @secret_word.pattern
      puts @mistakes_allowed.to_s + " incorrect guess(es) left."
      puts "Enter the letter you want uncovered:"
      letter = gets.chomp
      if @secret_word.valid_guess? letter
        if !@secret_word.guess_letter! letter
          @mistakes_allowed -= 1
          @game_over = @mistakes_allowed == 0
        else
          @game_over = @secret_word.is_solved?
        end
      else
        puts "I'm sorry, but that's not a valid letter."
      end
    end
  
    def is_valid_secret_word? word
      @secret_word = @secret_word_class.new word
      !@secret_word.is_solved?
    end
  end
  
  class SecretWord
    attr_accessor :word, :pattern
  
    def initialize word
      self.word = word
      self.pattern = '-' * self.word.length
    end
  
    def is_solved?
      self.word == self.pattern
    end
  
    def valid_guess? guess
      guess.length == 1
    end
  
    def guess_letter! letter
      found = self.word.index letter
      if found
        start = 0
        while ix = self.word.index(letter, start)
          self.pattern[ix] = self.word[ix]
          start = ix + 1
        end
      end
      found
    end
  end