#!/usr/bin/env python3
"""
A class and functions needed for playing handman.
"""
import os
import random

from module import commands, example

class Hangman():
	def __init__(self, bot):
		self.tries = 8
		self.word = self._PickWord(bot)
		self.working = [x for x in self.word]
		self.blanks = list('_' * len(self.word))

	def _PickWord(self, bot):
		with open(os.path.join(bot.static, "wordlist.txt"), "r") as file:
			word = random.choice(file.read().splitlines())
		return word

	def update(self, guess):
		if not guess in self.word:
			return

		for n, char in enumerate(self.word):
			if char == guess:
				self.blanks[n] = guess
		

def setup(bot):
	bot.memory["hangman"] = {}


@commands("hangman", "hm")
def hangman(bot, trigger):
	"""
	Plays hangman. --start [-s] to start a new game, otherwise words are
	taken as attempts to solve and single characters are taken as guesses.
	"""
	if not trigger.group(2):
		return bot.reply("Hang what?")

	if trigger.group(3) == "--start" or trigger.group(3) == "-s":
		if bot.memory["hangman"].get(trigger.channel):
			return bot.reply("There is already a game running in this channel.")

		bot.memory["hangman"][trigger.channel] = Hangman(bot)
		msg = f"{trigger.nick} has started a game of hangman! " \
			+ "Use '.hangman [guess]' to guess a letter or the entire word."
		bot.msg(msg)
		bot.say("".join(bot.memory["hangman"][trigger.channel].blanks))
		return

	if not bot.memory["hangman"].get(trigger.channel):
		msg = "There is no game currently running in this channel. " \
			+ "Use '.hangman --start' to start one"
		return bot.reply(msg)

	if len(trigger.group(2)) > 1:
		if trigger.group(2) == bot.memory["hangman"][trigger.channel].word:
			bot.say(f"{trigger.nick} has won!")
			bot.say(bot.memory["hangman"][trigger.channel].word)
			bot.memory["hangman"].pop(trigger.channel)
			return
		else:
			msg = "Incorrect. " \
				+ f"{bot.memory['hangman'][trigger.channel].tries} tries left."
			bot.reply(msg)

	elif len(trigger.group(2)) == 1:
		if trigger.group(2) in bot.memory["hangman"][trigger.channel].word:
			bot.reply("Correct!")
			bot.memory["hangman"][trigger.channel].update(trigger.group(2))

		else:
			bot.memory["hangman"][trigger.channel].tries -= 1
			msg = "Incorrect. " \
				+ f"{bot.memory['hangman'][trigger.channel].tries} tries left."
			bot.reply(msg)
	
	if bot.memory["hangman"][trigger.channel].tries <= 0:
		bot.say("Game over!")
		bot.say(bot.memory['hangman'][trigger.channel].word)
		bot.memory["hangman"].pop(trigger.channel)
	else:
		bot.say("".join(bot.memory["hangman"][trigger.channel].blanks))