import random
from string import ascii_lowercase

from flask import Flask, render_template, session, request, redirect, url_for, flash

import sensitive
from lib import cat_words, ROUNDS
from play import build_non_letter_hint, build_letter_hint

app = Flask(__name__)
app.config['SECRET_KEY'] = sensitive.SECRET_KEY
WORDS = list(cat_words())
NUM_GAMES = len(WORDS) - 1
GUESS_SPLITTER = '|'
STATE_PLAYING = 'PLAYING'
STATE_WIN = 'WIN'
STATE_LOSE = 'LOSE'
RANDOM_GAME_ID = -1


def init_game(game_id, word):
    session['game_id'] = game_id
    session['word'] = word
    session['guesses'] = ''
    session['state'] = STATE_PLAYING


def resolve_guesses():
    word = session['word']
    guesses = session.get('guesses', '').split(GUESS_SPLITTER)
    guesses_colored = []
    for guess in guesses:
        non_letters_hints = build_non_letter_hint(guess, word)
        letters_hints = build_letter_hint(guess, word)
        colored_guess = []
        for pos, letter in enumerate(guess):
            if letter in non_letters_hints:
                color = 'grey'
            elif letters_hints[pos] == letter.upper():
                color = 'green'
            elif letters_hints[pos] == letter:
                color = 'yellow'
            else:
                color = 'grey'
            colored_guess.append((letter, color))
        guesses_colored.append(colored_guess)
    return guesses_colored


def build_game_state():
    guesses_colored = resolve_guesses()
    return render_template('game.html',
                           guesses=guesses_colored,
                           state_playing=session['state'] == STATE_PLAYING,
                           state=session['state'])


@app.route('/')
def home():
    num_games = NUM_GAMES
    return render_template('home.html', num_games=num_games)


@app.route('/init/random')
def init_random_game():
    word = random.choice(WORDS)
    init_game(RANDOM_GAME_ID, word)
    return redirect(url_for('random_game'))


@app.route('/init/deterministic', methods=['post'])
def init_deterministic_game():
    game_id = request.form.get('game_id')
    return redirect(url_for('init_deterministic_game_id', game_id=game_id))


@app.route('/init/deterministic/<int:game_id>')
def init_deterministic_game_id(game_id):
    if not 0 <= int(game_id) <= NUM_GAMES:
        flash("game_id must be between 0 and {}".format(NUM_GAMES))
        return redirect(url_for('home'))
    word = WORDS[int(game_id)]
    init_game(game_id, word)
    return redirect(url_for('deterministic_game_id', game_id=game_id))


@app.route('/random')
def random_game():
    if 'word' not in session or 'state' not in session:
        return redirect(url_for('init_random_game'))
    return build_game_state()


@app.route('/deterministic/<int:game_id>')
def deterministic_game_id(game_id):
    if 'word' not in session or 'state' not in session or ('game_id' in session and session['game_id'] != game_id):
        return redirect(url_for('init_deterministic_game_id', game_id=game_id))
    return build_game_state()


@app.route('/guess', methods=['post'])
def make_guess():
    if 'word' not in session or 'guesses' not in session:
        flash('need a word')
        return redirect(url_for('home'))
    guess = request.form.get('guess')
    if len(guess) != 5 and not all([x in ascii_lowercase for x in guess]):
        flash("Make a 5 letter guess.")
        return build_game_state()
    guess = guess.lower()
    if guess not in WORDS:
        flash('Not in word list: {}'.format(guess))
        return build_game_state()
    word = session['word']
    round = len(session['guesses'].split(GUESS_SPLITTER))
    if round >= ROUNDS:
        session['state'] = STATE_LOSE
    if guess == word:
        session['state'] = STATE_WIN
    session['guesses'] += '{}{}'.format(guess, GUESS_SPLITTER)
    if 'game_id' not in session:
        flash('no game_id')
        return redirect(url_for('home'))
    game_id = session['game_id']
    if game_id == -1:
        return redirect(url_for('random_game'))
    return redirect(url_for('deterministic_game_id', game_id=game_id))


def main():
    app.run(debug=True)


if __name__ == "__main__":
    main()