Scraper for available vaccination dates in the Uppsala region

vaccination-capacity-bot.py

"""
This is a utility bot parsing the available vaccination slots
in Uppsala's region and sending changes whenever new vaccination
dates become available to a (Discord) webhook.

I've put this together during a train ride, so don't expect
well-documented code. It has helped me to get a suitable
vaccination date, and as such it has done its job well.

Python dependencies are beautifulsoup4 and timeloop.

Made with <3 by @behackl. Feel free to use and adapt it 
– or don't.
"""

import bs4
import requests

from timeloop import Timeloop
from datetime import timedelta

tl = Timeloop()

discord_webhook = "https://discord.com/api/webhooks/<insert stuff here>"
page = "https://vaccinationsbokning.regionuppsala.se/"

last_report = None

@tl.job(interval=timedelta(seconds=60))
def parse_available_slots():
    global last_report
    response = requests.get(page)
    if response.status_code != 200:
        requests.post(discord_webhook, {"content": f"Error parsing {page}, status code {response.status_code}"})
        return

    page_content = bs4.BeautifulSoup(response.content)
    timeslot_containers = page_content.find_all("div", {"class": "timeslot-area"})
    region_timeslots = dict(
        (slot.find_previous("h3").text.strip(), 
            dict(
                (s.find("p").text,
                s.find("div", {"class": "timeslot-availibility"}).text.strip()
                ) for s in slot.find_all("div", {"class": "timeslot"}))) for slot in timeslot_containers
    )

    for center, slots in region_timeslots.items():
        for day in slots.keys():
            capacity = 0 if slots[day] == "Fullbokat" else int(slots[day].split()[0])
            slots[day] = capacity
    
    available_slots = dict((center, dict((day, capacity) for day, capacity in slots.items() if capacity > 0)) for center, slots in region_timeslots.items())
    available_slots = dict((center, slots) for center, slots in available_slots.items() if slots)

    available_slots_simple = dict((center, set(slots.keys())) for center, slots in available_slots.items())

    if available_slots_simple != last_report:
        msg = "**Change in available vaccinations!**\n\n"
        msg += "\n".join([f"*{c}*: { ', '.join(f'{d} ({cap})' for d, cap in s.items()) }" for c, s in available_slots.items()])
        msg += "\n\n<https://vaccinationsbokning.regionuppsala.se/#Uppsala>"
        available_dates = set.union(*[set(s.keys()) for s in available_slots.values()])
        requests.post(discord_webhook, {"content": msg})
        last_report = available_slots_simple
        print(last_report)


if __name__ == "__main__":
    tl.start(block=True)