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#!/usr/bin/env ruby

#Choose a word
word_bank = ["mountains", "madness", "colour", "unknown",
  "dream", "witch", "house", "quest", "horror", "west", "reanimator",
  "red", "hook", "case", "ward", "space", "shadow", "time", "over", "shunned",
  "whisperer", "darkness"]
word = word_bank.sample

chances = 8

#Generate guessed word
guessed_word = ""
len = word.length
len.times do
  guessed_word << "_"
end

#Start game
puts "Welcome to Hangman!"
puts
puts "Word: " + guessed_word
puts "Chances remaining: #{chances}"

while guessed_word != word && chances > 0

  #Get user input
  print "Guess a single letter (a-z) or the entire word: "
  guess = gets.chomp

  #Evaluate guess
  correct = false
  occurrences = 0
  loc = 0
  if guess.length > 1 #User guesses entire word
    if guess == word
      guessed_word = word
    else
      puts "That's not the word, sorry."
      chances -= 1
    end
  else #User guesses individual letter
    word.each_char do |letter|
      if guess == letter
        guessed_word[loc] = letter
        occurrences += 1
        correct = true
      end
      loc += 1
    end
    if correct == true #Inform user of outcome of their guess
      puts "Found #{occurrences} occurrence(s) of the character #{guess}."
      puts
      puts "Word: " + guessed_word
    else
      chances -= 1
      puts "Sorry, no #{guess}'s found."
      puts
      puts "Word: " + guessed_word
      puts "Chances remaining: #{chances}"
    end
  end
end

if guessed_word == word
  puts "Congratulations, you've guessed the word!"
else
  puts "You're out of chances, better luck next time..."
end