piss-bot/bot.py

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import asyncio
import logging
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import os
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import pickle
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import re
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import textwrap
from asyncio import sleep
import aiohttp
import arrow
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from ics import Calendar, Event
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from config import Config
config = Config()
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config.WEBHOOK_URL = os.getenv("WEBHOOK_URL", config.WEBHOOK_URL)
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config.TG_CHAT_ID = os.getenv("TG_CHAT_ID", config.TG_CHAT_ID)
config.TG_API_KEY = os.getenv("TG_API_KEY", config.TG_API_KEY)
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STATE_PATH = os.getenv("STATE_PATH", "state.pickle")
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class State:
notified = []
notified_soon = []
def process_event(event, template):
if event.begin.hour == event.begin.minute == 0:
date_fmt = 'dddd, D. MMMM YYYY'
else:
date_fmt = 'HH:mm / dddd, D. MMMM YYYY'
date = event.begin.format(date_fmt, locale='cs_CZ')
when = event.begin.humanize()
location = f"@ {event.location}" if event.location else ""
description = event.description or ""
description = description.strip()
if description:
lines = description.splitlines()
if "http" in lines[0]:
url = lines[0].strip()
description = "\n".join(lines[1:])
else:
url = ""
else:
url = ""
description = description or "???"
description = textwrap.shorten(description, width=512, placeholder="...")
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output = template.format(
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title=event.name,
date=date,
location=location,
when=when,
url=url,
description=description
)
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output = re.sub(r'(<br>)+', '<br>', output)
return output
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async def send_message(text):
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if config.WEBHOOK_URL:
logging.debug(f"Posting via WEBHOOK.")
async with aiohttp.ClientSession() as session:
result = await session.post(config.WEBHOOK_URL, json={
"text": text,
"format": "html",
"displayName": "PUBLIC INFORMATION STREAMS & SERVICES",
"avatarUrl": config.AVATAR_URL
})
logging.debug(f"RECV: [{result.status}] {await result.text()}")
if config.TG_CHAT_ID and config.TG_API_KEY:
logging.debug(f"Posting via TELEGRAM.")
async with aiohttp.ClientSession() as session:
result = await session.post(f"https://api.telegram.org/bot{config.TG_API_KEY}/sendMessage", json={
"chat_id": config.TG_CHAT_ID,
"text": text.replace('<br>', '\n'),
"parse_mode": "html"
})
logging.debug(f"RECV: [{result.status}] {await result.text()}")
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def get_event_id(event: Event) -> str:
return f"{event.begin}//{event.name}"
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async def main():
try:
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with open(STATE_PATH, 'rb') as state_fp:
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state = pickle.load(state_fp)
except FileNotFoundError:
state = State()
while True:
calendars = []
async with aiohttp.ClientSession() as session:
for url in config.URLS:
logging.debug(f"Requesting {url}...")
async with session.get(url) as resp:
calendars.append(Calendar(await resp.text()))
future_events = [event for calendar in calendars for event in calendar.events if event.begin > arrow.now()]
logging.debug(f"Got {len(future_events)} future events...")
for event in future_events:
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if get_event_id(event) not in state.notified and event.begin.shift(days=-2) < arrow.now():
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logging.info(f"Sending description of {event.name}")
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await send_message(process_event(event, config.EVENT_TEMPLATE))
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state.notified.append(get_event_id(event))
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if get_event_id(event) not in state.notified_soon and event.begin.shift(hours=-2) < arrow.now():
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logging.info(f"Notifying of {event.name}")
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await send_message(process_event(event, config.SOON_TEMPLATE))
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state.notified_soon.append(get_event_id(event))
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with open(STATE_PATH, 'wb') as state_fp:
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pickle.dump(state, state_fp)
logging.debug("Sleeping for 60s...")
await sleep(60)
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG, format='%(asctime)s - [%(levelname)s] %(message)s')
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if config.WEBHOOK_URL is None and (config.TG_API_KEY is None or config.TG_CHAT_ID is None):
raise RuntimeError("One of WEBHOOK_URL, TG_API_KEY & TG_CHAT_ID must be defined.")
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loop = asyncio.get_event_loop()
loop.run_until_complete(main())