94 lines
2.7 KiB
Python
94 lines
2.7 KiB
Python
# -*- coding: utf-8 -*-
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import re
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import asyncio
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from datetime import datetime
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from aiocron import crontab
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from docopt import Dict
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from irc3.plugins.command import command
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from irc3.utils import IrcString
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from psycopg2 import Error
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from psycopg2.extras import DictRow
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from . import DatabasePlugin, Bot
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class Timer(DatabasePlugin):
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def __init__(self, bot: Bot):
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super().__init__(bot)
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self.timers = set()
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self.set_timers()
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crontab('0 * * * *', func=self.set_timers)
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@command
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def timer(self, mask: IrcString, target: IrcString, args: Dict):
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"""Sets a timer, delay can be: s, m, h, d, w, mon, y
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%%timer <delay> <message>...
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"""
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delay = args['<delay>']
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message = ' '.join(args['<message>'])
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# TODO: allow precise delays
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if not re.match(r'\d+[smhdwy]|mon', delay):
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return 'Invalid timer delay: {}'.format(delay)
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try:
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self.cur.execute('''
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INSERT INTO
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timers (mask, target, message, delay, ends_at)
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VALUES
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(%s, %s, %s, %s, now() + INTERVAL %s)
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RETURNING
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*
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''', [mask, target, message, delay, delay])
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self.con.commit()
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asyncio.ensure_future(self.exec_timer(self.cur.fetchone()))
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self.bot.notice(mask.nick, 'Timer in {delay} set: {message}'.format(delay=delay, message=message))
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except Error as ex:
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self.log.error(ex)
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self.con.rollback()
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def set_timers(self):
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"""Function which queries all timers in the next hour and schedules them."""
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self.log.debug('Fetching timers')
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self.cur.execute('''
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SELECT
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*
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FROM
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timers
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WHERE
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ends_at >= now()
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AND ends_at < now() + INTERVAL '1h'
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''')
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for timer in self.cur.fetchall():
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asyncio.ensure_future(self.exec_timer(timer))
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async def exec_timer(self, timer: DictRow):
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"""Sets the actual timer (sleeps until it fires), sends the reminder and deletes the timer from database."""
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if timer['id'] in self.timers:
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return
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self.timers.add(timer['id'])
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seconds = (timer['ends_at'] - datetime.now()).total_seconds()
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if seconds > 0.0:
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await asyncio.sleep(seconds)
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self.bot.privmsg(timer['target'], '\x02[Timer]\x02 {nick}: {message} ({delay})'.format(
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message=timer['message'],
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nick=IrcString(timer['mask']).nick,
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delay=timer['delay'],
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))
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self.timers.remove(timer['id'])
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self.cur.execute('''
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DELETE FROM
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timers
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WHERE
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id = %s
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''', [timer['id']])
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self.con.commit()
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