import configparser
import functools
import logging
import os
import random
import re
import string

import dateutil.parser
import irc.bot
import requests

from instagram import Instagram
from twitch import Twitch
from youtube import Youtube


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


log = logging.getLogger('irc.client')
log.addHandler(logging.StreamHandler())
log.setLevel(logging.DEBUG if bool(int(os.getenv('DEBUG', 0))) else logging.INFO)


# $username --> Sweet! Thanks for the quote! #$id: $response
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)

# $username --> Successfully edited Quote #$id: $response
QUOTE_EDITED_PATTERN = re.compile(r'''^
    (?P<user>.+)\s+-->\s+
    Successfully\s+edited\s+Quote\s+
    \#(?P<id>\d+):\s+
    (?P<text>.+)\s+
    \[(?P<game>.+)\]\s+
    \[(?P<date>.+)\]$''', re.VERBOSE)

# $username --> Successfully deleted Quote #$id.
QUOTE_REMOVED_PATTERN = re.compile(r'''^
    (?P<user>.+)\s+-->\s+
    Successfully\s+deleted\s+Quote\s+
    \#(?P<id>\d+)\.$''', re.VERBOSE)


class TwitchBot(irc.bot.SingleServerIRCBot):
    def __init__(self):
        self.patterns = [
            (QUOTE_ADDED_PATTERN, self.add_quote),
            (QUOTE_EDITED_PATTERN, self.edit_quote),
            (QUOTE_REMOVED_PATTERN, self.remove_quote),
        ]
        self.commands = [
            (re.compile(r'^!(bella(gram|pics)|insta(gram|bella))$'), self.bellagram),
            (re.compile(r'^!lastquote$'), self.last_quote),
            (re.compile(r'^!findquote\s+(?P<q>")?(?P<filter>.+)(?(q)")$'), self.find_quote),
            (re.compile(r'^!sync(\s+(?P<since>.+))?$'), self.sync),
            (re.compile(r'^!yt\s+(?P<q>")?(?P<query>.+)(?(q)")$'), self.query_youtube),
        ]
        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.master_user_id = config['Twitch'].getint('master_user_id')
        self.api_url = config['Quotes'].get('api_url')
        self.api_key = config['Quotes'].get('api_key')
        self.bellagrams = self._get_bellagrams()
        log.info('Connecting to %s:%d', self.server, self.port)
        super(TwitchBot, self).__init__([(self.server, self.port, self.token)],
                                        self.nickname, self.nickname)

    def _get_bellagrams(self):
        username = config['Instagram'].get('username')
        keywords = config['Instagram'].get('keywords').split(',')
        media = Instagram(username, log).get_media()
        if not media:
            return None
        return [m for m in media if [k for k in keywords if k.lower() in m['text'].lower()]]

    def _respond(self, connection, event, msg):
        if event.target.startswith('#'):
            connection.privmsg(event.target, msg)
        else:
            connection.privmsg('#jtv', '/w {0} {1}'.format(event.source.nick, msg))

    def on_welcome(self, connection, event):
        connection.cap('REQ', ':twitch.tv/membership')
        connection.cap('REQ', ':twitch.tv/tags')
        connection.cap('REQ', ':twitch.tv/commands')
        log.info('Joining %s', self.channel)
        connection.join(self.channel)

    def on_join(self, connection, event):
        log.info('Joined %s', 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):
        tags = {t['key']: t['value'] for t in event.tags}
        message = ''.join([c for c in event.arguments[0] if c in string.printable])
        message = message.rstrip()
        respond = functools.partial(self._respond, connection, event)
        for pattern, action in self.patterns + self.commands:
            m = pattern.match(message)
            if m:
                action(tags, respond, **m.groupdict())

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

    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

    def delete(self, id):
        r = requests.delete('{0}/quotes/{1}'.format(self.api_url, id),
                            headers={'X-Quotes-API-Key': self.api_key})
        r.raise_for_status()
        return r

    def bellagram(self, tags, respond, **kwargs):
        if not self.bellagrams:
            respond('Sorry @{0}, couldn\'t get any media from Instagram'.format(tags['display-name']))
        else:
            respond(random.choice(self.bellagrams)['url'])

    def last_quote(self, tags, respond, **kwargs):
        try:
            quotes = self.get(dict(
                sort_by='id',
                sort_order='desc',
                page_size=1)).json()
            quote = quotes[0]
        except (requests.exceptions.HTTPError, IndexError):
            respond('Sorry @{0}, no quotes found'.format(tags['display-name']))
        else:
            respond('!quote {0}'.format(quote['id']))

    def find_quote(self, tags, respond, filter, **kwargs):
        if len(filter) < 3:
            respond('Sorry @{0}, the search phrase is too short'.format(tags['display-name']))
            return
        try:
            quotes = self.get(dict(
                filter=filter,
                sort_order='random',
                page_size=1)).json()
            quote = quotes[0]
        except (requests.exceptions.HTTPError, IndexError):
            respond('Sorry @{0}, no quotes found'.format(tags['display-name']))
        else:
            respond('!quote {0}'.format(quote['id']))

    def sync(self, tags, respond, since=None, **kwargs):
        if int(tags['user-id']) != self.master_user_id:
            respond('Sorry @{0}, you are not allowed to do this'.format(tags['display-name']))
            return
        if since is None:
            try:
                quotes = self.get(dict(
                    sort_by='id',
                    sort_order='desc',
                    page_size=1)).json()
                quote = quotes[0]
            except requests.exceptions.HTTPError as e:
                log.error('Failed to get quotes: %s', str(e))
                return
            except IndexError:
                log.error('No quotes available')
                return
            else:
                since = quote['date']
        api_url = config['Twitch'].get('api_url')
        client_id = config['Twitch'].get('client_id')
        user_id = config['Twitch'].getint('target_user_id')
        since = dateutil.parser.parse(since).date()
        messages = Twitch(api_url, client_id, log).get_messages(user_id, since)
        if not messages:
            return
        for message in messages:
            for pattern, action in self.patterns:
                m = pattern.match(message)
                if m:
                    action(connection, None, **m.groupdict())
        respond('@{0}: sync completed'.format(tags['display-name']))

    def query_youtube(self, tags, respond, query, **kwargs):
        api_key = config['Youtube'].get('api_key')
        channel_id = config['Youtube'].get('channel_id')
        yt = Youtube(api_key)
        items = yt.search(channel_id, query, playlists=True, limit=1)
        if not items:
            items = yt.search(channel_id, query, playlists=False, limit=1)
        if not items:
            respond('Sorry @{0}, couldn\'t find anything on Youtube'.format(tags['display-name']))
        else:
            respond('{0}: {1}'.format(items[0]['title'], items[0]['url']))

    def add_quote(self, tags, respond, user, id, text, game, date, **kwargs):
        if text[0] == text[-1] == '"':
            text = text[1:-1]
        log.info('Adding quote %s: %s', id, text)
        try:
            self.post(dict(
                id=int(id),
                date=dateutil.parser.parse(date, dayfirst=True).date().isoformat(),
                game=game,
                text=text))
        except requests.exceptions.HTTPError as e:
            log.error('Failed to add quote: %s', str(e))

    def edit_quote(self, tags, respond, user, id, text, game, date, **kwargs):
        if text[0] == text[-1] == '"':
            text = text[1:-1]
        log.info('Editing quote %s: %s', id, text)
        try:
            self.post(dict(
                id=int(id),
                date=dateutil.parser.parse(date, dayfirst=True).date().isoformat(),
                game=game,
                text=text))
        except requests.exceptions.HTTPError as e:
            log.error('Failed to edit quote: %s', str(e))

    def remove_quote(self, tags, respond, user, id, **kwargs):
        log.info('Removing quote %s', id)
        try:
            self.delete(int(id))
        except requests.exceptions.HTTPError as e:
            log.error('Failed to remove quote: %s', str(e))


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


if __name__ == "__main__":
    main()