# Quizzes.
easy_quiz = "'Portugal is a country in ___1___. Portugal is bordered to the \
east by ___2___, and to the west by the ___3___ Ocean. ___4___ is the primary language \
spoken in Portugal.'"
medium_quiz = "'Tanzania is a country in ___1___. Tanzania is popular for \
travelers interested in climbing Mount ___2___ or going on safari in the \
___3___ National Park. The island of ___4___ lies just to the east of Tanzania \
and is popular for its beaches and marine life.'"
hard_quiz = "'Thailand is a country in Southeast ___1___. A popular city in \
northern Thailand is ___2___. Thailand has many ___3___ off its southern coast, \
and is bordered to the south by ___4___, another beautiful country.'"

# Answers to the quizzes.
easy_answers = ["europe", "spain", "atlantic", "portuguese"]
medium_answers = ["africa", "kilimanjaro", "serengeti", "zanzibar"]
hard_answers = ["asia", "chiang mai", "islands", "malaysia"]

# A list of the blanks to be replaced by the player's guesses.
blanks = ["___1___", "___2___", "___3___", "___4___"]

# Introduction text will print when the game first opens.
print "Welcome to the Fill-in-the-Blanks Quiz!"

# Main contents of game. The function will find each blank in the quiz and then ask
# the player to enter an answer. Players have three attempts to answer each question.
# If they answer incorrectly (if their answer doesn't match the answers list), they will
# be prompted to try again via the incorrect_answer function. If they answer correctly,
# the function will run the replace_blanks function, which will return the quiz with that
# blank (and all previous blanks) filled in. The player will then be asked the next question.
def play_game(quiz, answers):
    index, attempts_left = 0, 3
    max_index, min_attempts_left = 3, 1
    quiz = quiz.split()
    while index <= max_index and attempts_left >= min_attempts_left:
        for word in quiz:
            if word in blanks:
                user_guess = raw_input("Fill in number " + str(index + 1) + ": ").lower()
                if user_guess != answers[index]:
                    attempts_left -= 1
                    incorrect_answer(attempts_left, min_attempts_left)
                    if attempts_left < min_attempts_left:
                        break
                else:
                    quiz = replace_blanks(quiz, blanks, index, user_guess)
                    index += 1
                    attempts_left = 3
                    winning_quiz(index, max_index)

# If user answers question correctly, this function will replace the blank with the correct
# answer and print the quiz with the replacement and all previous blanks filled in.
def replace_blanks(quiz, blanks, index, user_guess):
    quiz = " ".join(quiz)
    quiz = quiz.replace(blanks[index], user_guess)
    print "Correct!" + "\n" + quiz
    quiz = quiz.split()
    return quiz

# Tells the user they won and ends quiz when the last question has been answered correctly
# and the quiz has passed the max_index value of 3.
def winning_quiz(index, max_index):
    if index > max_index:
        print "Correct. You won!"

# Responds to the user if they answer a question incorrectly by prompting them for another answer.
# If they are out of attempts, which will happen when the min_attempts_left value of 0
# is reached, this function will tell them they lost.
def incorrect_answer(attempts_left, min_attempts_left):
    if attempts_left < min_attempts_left:
        print "That's not correct. Sorry - you lose!"
    else:
        print "That's not correct! You have " + str(attempts_left) + " tries left!"

# Asks player to select level of difficulty. If they don't answer with either
# easy, medium, or hard, it will ask them again. Once they correctly select a level
# of difficulty, this function will then tell them they have three attempts to fill in
# each blank and tell them to begin playing. It then prints out the quiz they chose
# and returns the play_game function.
def select_difficulty():
    chosen_level = raw_input("Please select your level of difficulty: easy, medium, or hard: ").lower()
    if chosen_level == "easy":
        print "You've selected the easy quiz! You have 3 attempts to fill in each blank. Let's begin!"
        print easy_quiz
        return play_game(easy_quiz, easy_answers)
    elif chosen_level == "medium":
        print "You've selected the medium quiz! You have 3 attempts to fill in each blank. Let's begin!"
        print medium_quiz
        return play_game(medium_quiz, medium_answers)
    elif chosen_level == "hard":
        print "You've selected the hard quiz! You have 3 attempts to fill in each blank. Let's begin!"
        print hard_quiz
        return play_game(hard_quiz, hard_answers)
    else:
        print "I didn't understand your answer."
        select_difficulty()
select_difficulty()