#hangman game
#01/21/2022

def pick_word(a)
  rand_int = rand(0..a.size)
  return a[rand_int].chop!
end

def generate_hidden_letters(word)
  hidden_letters = Array.new
  word.length.times do |i|
    if rand(0..1) == 0 #do this 50% of the time
      hidden_letters.push(word[i]) #create an array of letters to be hidden
    end
  end
  return hidden_letters
end

def scramble_word(word, hidden_letters, scrambled_word)
  hidden_letters.each do |letter| #for each hidden letter
    word.length.times do |i|
      if word[i] == letter        #if you find one, replace it with a "_" in the string
        scrambled_word[i] = "_"
      end
    end
  end
  return scrambled_word
end

def unscramble_word(word, guesses, scrambled_word)
  guesses.each do |letter| #for each hidden letter
    word.length.times do |i|
      if word[i] == letter        #if you find one, replace it with a "_" in the string
        scrambled_word[i] = letter
      end
    end
  end
  return scrambled_word
end

a = Array.new
dict = File.open('5desk.txt')
dict.each do |row|
  a.push(row)
end

#picking a word between 5 and 12 characters long
word = pick_word(a)
until word.length.between?(5, 12)
  word = pick_word(a)
  word.downcase!
end

#initialize some variables
guess = ""
guesses = Array.new
wrong_guesses = 0
scrambled_word = ""
scrambled_word << word

hidden_letters = generate_hidden_letters(word)
scrambled_word = scramble_word(word, hidden_letters, scrambled_word)

puts "Word is #{word}" 

while true

  #puts the array as a readable string
  puts scrambled_word.inspect[1...-1].gsub('"',"").gsub(',','')

  #check game end conditions
  if hidden_letters.size == 0
    puts "YOU WIN"
    exit
  end

  if wrong_guesses > 5
    puts "YOU HANG"
    exit
  end

  #get player input
  print "Guess a letter: "
  guess = gets.chop

  unless guesses.include?(guess) #keep track of previous guesses
    guesses.push(guess)
  end

  #if guess is wrong, add another piece to the hangman
  unless word.include?(guess)
    wrong_guesses = wrong_guesses + 1
  end

  print "Guesses: #{guesses.inspect[1...-1].gsub('"',"").gsub(',','')}\n\n"
  scrambled_word = unscramble_word(word, guesses, scrambled_word)

  hidden_letters.delete(guess)

end

#if input is included in word but not hidden word then
#if word[x] == input then hidden[x] == input
#do this over the array
#if guess == a hidden letter
# fill in that letter
#else
# increase hangman counter