"""Track races and those racing them."""

import logging

import irc.client

from ircbot.lib import Plugin
from races.models import Race, Racer, RaceUpdate


log = logging.getLogger('races.ircplugin')


class Races(Plugin):

    """Track races and allow for logging updates."""

    def start(self):
        """Hook handler functions into the IRC library."""

        self.connection.reactor.add_global_regex_handler(['pubmsg', 'privmsg'], r'^!race\s+(\S+)\s+join$',
                                                         self.join_race)
        self.connection.reactor.add_global_regex_handler(['pubmsg', 'privmsg'], r'^!race\s+(\S+)\s+leave$',
                                                         self.leave_race)
        self.connection.reactor.add_global_regex_handler(['pubmsg', 'privmsg'], r'^!race\s+(\S+)\s+start$',
                                                         self.start_race)
        self.connection.reactor.add_global_regex_handler(['pubmsg', 'privmsg'], r'^!race\s+(\S+)\s+finish$',
                                                         self.finish_race)
        self.connection.reactor.add_global_regex_handler(['pubmsg', 'privmsg'], r'^!race\s+(\S+)\s+update\s+(.*)$',
                                                         self.update_race)

        super(Races, self).start()

    def stop(self):
        """Unhook handler functions into the IRC library."""

        self.connection.reactor.remove_global_regex_handler(['pubmsg', 'privmsg'], self.join_race)
        self.connection.reactor.remove_global_regex_handler(['pubmsg', 'privmsg'], self.leave_race)
        self.connection.reactor.remove_global_regex_handler(['pubmsg', 'privmsg'], self.start_race)
        self.connection.reactor.remove_global_regex_handler(['pubmsg', 'privmsg'], self.finish_race)
        self.connection.reactor.remove_global_regex_handler(['pubmsg', 'privmsg'], self.update_race)

        super(Races, self).stop()

    def join_race(self, connection, event, match):
        """Join a race."""

        nick = irc.client.NickMask(event.source).nick
        race_id = match.group(1)
        try:
            race = Race.objects.get(key=race_id)

            # is the nick already in the race
            try:
                racer = Racer.objects.get(race=race, nick=nick)

                # ideally they're not in the db, but if they aren't flagged as joined,
                # then let them join again i guess
                if racer.joined:
                    return self.bot.reply(event, "you are already in {0:s}.".format(race.name))
            except Racer.DoesNotExist:
                racer = Racer()
                racer.race = race
                racer.nick = nick

            racer.joined = True
            racer.started = False
            racer.finished = False
            racer.save()

            return self.bot.reply(event, "you have joined {0:s}.".format(race.name))
        except Race.DoesNotExist:
            return self.bot.reply(event, "race {0:s} not found.".format(race_id))

    def leave_race(self, connection, event, match):
        """Leave a race."""

        nick = irc.client.NickMask(event.source).nick
        race_id = match.group(1)
        try:
            race = Race.objects.get(key=race_id)

            try:
                racer = Racer.objects.get(race=race, nick=nick)

                if racer.finished:
                    return self.bot.reply(event, "you can't leave {0:s} since you finished it."
                                          "".format(race.name))

                if racer.joined:
                    racer.joined = False
                    racer.save()

                    return self.bot.reply(event, "you have left {0:s}.".format(race.name))
                else:
                    return self.bot.reply(event, "you weren't in {0:s}.".format(race.name))
            except Racer.DoesNotExist:
                return self.bot.reply(event, "you weren't in {0:s}.".format(race.name))
        except Race.DoesNotExist:
            return self.bot.reply(event, "race {0:s} not found.".format(race_id))

    def start_race(self, connection, event, match):
        """Start racing."""

        nick = irc.client.NickMask(event.source).nick
        race_id = match.group(1)
        try:
            race = Race.objects.get(key=race_id)

            try:
                racer = Racer.objects.get(race=race, nick=nick)

                if racer.started:
                    return self.bot.reply(event, "you have already started {0:s}.".format(race.name))

                if racer.finished:
                    return self.bot.reply(event, "you can't start {0:s} since you finished it."
                                          "".format(race.name))

                racer.started = True
                racer.save()

                # create an event for this too
                RaceUpdate.objects.create(race=race, racer=racer, update="Started the race.")

                return self.bot.reply(event, "you have started {0:s}.".format(race.name))
            except Racer.DoesNotExist:
                return self.bot.reply(event, "you have not joined {0:s}.".format(race.name))
        except Race.DoesNotExist:
            return self.bot.reply(event, "race {0:s} not found.".format(race_id))

    def finish_race(self, connection, event, match):
        """Finish racing."""

        nick = irc.client.NickMask(event.source).nick
        race_id = match.group(1)
        try:
            race = Race.objects.get(key=race_id)

            try:
                racer = Racer.objects.get(race=race, nick=nick)

                if not racer.started:
                    return self.bot.reply(event, "you have not started {0:s}.".format(race.name))

                if racer.finished:
                    return self.bot.reply(event, "you have already finished {0:s}."
                                          "".format(race.name))

                racer.finished = True
                racer.save()

                # create an event for this too
                RaceUpdate.objects.create(race=race, racer=racer, update="Finished the race.")

                return self.bot.reply(event, "you have finished {0:s}.".format(race.name))
            except Racer.DoesNotExist:
                return self.bot.reply(event, "you have not joined {0:s}.".format(race.name))
        except Race.DoesNotExist:
            return self.bot.reply(event, "race {0:s} not found.".format(race_id))

    def update_race(self, connection, event, match):
        """Add an update to an ongoing race."""

        nick = irc.client.NickMask(event.source).nick
        race_id = match.group(1)
        update = match.group(2)
        try:
            race = Race.objects.get(key=race_id)

            try:
                racer = Racer.objects.get(race=race, nick=nick)

                if not racer.started:
                    return self.bot.reply(event, "you have not started {0:s}.".format(race.name))

                if racer.finished:
                    return self.bot.reply(event, "you have already finished {0:s}."
                                          "".format(race.name))

                # create an event
                RaceUpdate.objects.create(race=race, racer=racer, update=update)

                return self.bot.reply(event, "update logged.")
            except Racer.DoesNotExist:
                return self.bot.reply(event, "you have not joined {0:s}.".format(race.name))
        except Race.DoesNotExist:
            return self.bot.reply(event, "race {0:s} not found.".format(race_id))


plugin = Races