import configparser
import logging
import os
import re
import string

import dateutil.parser
import irc.bot
import requests


config = configparser.ConfigParser()
config.read('settings.cfg')


log = logging.getLogger('irc.client')
log.addHandler(logging.StreamHandler())

if os.getenv('DEBUG', False):
    log.setLevel(logging.DEBUG)


QUOTE_ADDED_PATTERN = re.compile(r'''^
    (?P<user>.+)\s+-->\s+
    Sweet!\s+Thanks\s+for\s+the\s+quote!\s+
    \#(?P<id>\d+):\s+
    "(?P<text>.+)"\s+
    \[(?P<game>.+)\]\s+
    \[(?P<date>.+)\]$''', re.VERBOSE)

# TODO: quote_edited, quote_removed


class TwitchBot(irc.bot.SingleServerIRCBot):
    def __init__(self):
        self.actions = [
            (re.compile(r'^!lastquote$'), self.last_quote),
            (re.compile(r'^!findquote\s+(?P<q>")?(?P<filter>.+)(?(q)")$'), self.find_quote),
            (QUOTE_ADDED_PATTERN, self.add_quote),
        ]
        self.server = config['IRC'].get('server', 'irc.chat.twitch.tv')
        self.port = config['IRC'].getint('port', 6667)
        self.nickname = config['IRC'].get('nickname')
        self.channel = '#{0}'.format(config['IRC'].get('channel'))
        self.token = config['Twitch'].get('token')
        self.api_url = config['Quotes'].get('api_url')
        self.api_key = config['Quotes'].get('api_key')
        print('Connecting to {0}:{1}'.format(self.server, self.port))
        super(TwitchBot, self).__init__([(self.server, self.port, self.token)],
                                        self.nickname, self.nickname)

    def on_welcome(self, connection, event):
        connection.cap('REQ', ':twitch.tv/membership')
        connection.cap('REQ', ':twitch.tv/tags')
        connection.cap('REQ', ':twitch.tv/commands')
        print('Joining {0}'.format(self.channel))
        connection.join(self.channel)

    def on_join(self, connection, event):
        print('Joined {0}'.format(event.target))

    def on_pubmsg(self, connection, event):
        self.process_message(connection, event)

    def on_whisper(self, connection, event):
        self.process_message(connection, event)

    def process_message(self, connection, event):
        sources = [t['value'] for t in event.tags if t['key'] == 'display-name']
        source = sources.pop()
        message = ''.join([c for c in event.arguments[0] if c in string.printable])
        for pattern, action in self.actions:
            m = pattern.match(message)
            if m:
                action(connection, source, **m.groupdict())

    def get(self, params):
        r = requests.get('{0}/quotes'.format(self.api_url), params=params)
        r.raise_for_status()
        return r.json()

    def post(self, data):
        r = requests.post('{0}/quotes'.format(self.api_url), data=data,
                          headers={'X-Quotes-API-Key': self.api_key})
        r.raise_for_status()
        return r.json()

    def delete(self):
        r = requests.post('{0}/quotes'.format(self.api_url),
                          headers={'X-Quotes-API-Key': self.api_key})
        r.raise_for_status()
        return r.json()

    def last_quote(self, connection, source, **kwargs):
        try:
            quotes = self.get(dict(
                sort_by='id',
                sort_order='desc',
                page_size=1))
            quote = quotes[0]
        except (requests.exceptions.HTTPError, IndexError):
            msg = 'Sorry @{0}, no quotes found'.format(source)
        else:
            msg = '!quote {0}'.format(quote['id'])
        connection.privmsg(self.channel, msg)

    def find_quote(self, connection, source, filter, **kwargs):
        if len(filter) < 3:
            msg = 'Sorry @{0}, the search phrase is too short'.format(source)
            connection.privmsg(self.channel, msg)
            return
        try:
            quotes = self.get(dict(
                filter=filter,
                sort_by='id',
                sort_order='desc',
                page_size=1))
            quote = quotes[0]
        except (requests.exceptions.HTTPError, IndexError):
            msg = 'Sorry @{0}, no quotes found'.format(source)
        else:
            msg = '!quote {0}'.format(quote['id'])
        connection.privmsg(self.channel, msg)

    def add_quote(self, connection, source, user, id, text, game, date, **kwargs):
        print('Adding quote {0}: {1}'.format(id, text))
        try:
            self.post(dict(
                id=int(id) + 10000, # FIXME
                date=dateutil.parser.parse(date, dayfirst=True).date().isoformat(),
                game=game,
                text=text))
        except requests.exceptions.HTTPError as e:
            print('Failed to add quote: ', e)


def main():
    bot = TwitchBot()
    bot.start()


if __name__ == "__main__":
    main()