80 lines
3.1 KiB
Python
Executable file
80 lines
3.1 KiB
Python
Executable file
#!/usr/bin/env python3
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import requests
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import json
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import icalendar
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from datetime import datetime, timedelta
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import hashlib
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import time
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import re
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import sys
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OFFSET = -time.timezone
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events_url = "https://bitlair.nl/Special:Ask/-5B-5BCategory:Event-5D-5D-20-5B-5BStart::%E2%89%A519-20January-202024-5D-5D/-3FStart/-3FEnd/-3FStatus/-3FEvent-20location/mainlabel%3D/limit%3D50/order%3DASC/sort%3DStart/prettyprint%3Dtrue/format%3Djson"
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# above URL asks for all events and returns their name, start, end and location
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events_page = requests.get(events_url)
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events = events_page.json()
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cal = icalendar.Calendar()
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# Some properties are required to be compliant
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cal.add('prodid', '-//Bitlair event calendar//bitlair.nl//')
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cal.add('version', '2.0')
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for page_path, value in events['results'].items():
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# Unix timestamps from semwiki are not in UTC but in $localtime
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start_time = None
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end_time = None
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if (tt := value['printouts']['Start']) and tt:
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start_time = datetime.fromtimestamp(int(tt[0]['timestamp']) - OFFSET)
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if (tt := value['printouts']['End']) and tt:
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end_time = datetime.fromtimestamp(int(tt[0]['timestamp']) - OFFSET)
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if not start_time:
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continue
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if not end_time:
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end_time = start_time + timedelta(hours=4)
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# Remove preceding 'Events/YYYY-MM-DD ' if existant from pagename to result in the actual event name
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eventname = page_path
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if (m := re.search(r"Events\/....-..-.. (.*)", page_path)) and m:
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eventname = m[1]
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# If an event ends when humans are usually asleep, truncate the time range to midnight.
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# This prevents calendar items from cluttering the next day when viewed.
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if end_time.hour < 6:
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end_time = datetime(end_time.year, end_time.month, end_time.day, 23, 59) - timedelta(days=1)
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event = icalendar.Event()
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event.add('summary', eventname)
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event.add('description', f'{page_path}\n {value["fullurl"]}')
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event.add('dtstamp', datetime.now())
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event.add('dtstart', start_time)
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event.add('dtend', end_time)
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event.add('url', value['fullurl'])
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event['location'] = icalendar.vText(value['printouts']['Event location'][0]['fulltext'])
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if len(value['printouts']['Status']) != 0:
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# a status is defined, see if we can parse it to a status as per RFC5545 3.8.1.11
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status_value = value['printouts']['Status'][0]['fulltext'].upper()
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# use a few synonyms in Dutch and English just to be sure
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if status_value in ("CANCELED", "CANCELLED"): # damn 'muricans!
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event['status'] = 'CANCELLED'
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elif status_value in ("TENTATIVE", "TBD", "MAYBE", "NNB", "NTB", "NOG NIET BEKEND"):
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event['status'] = 'TENTATIVE'
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elif status_value in ("CONFIRMED", "DEFINITIVE", "DEFINITIEF", "BEVESTIGD"):
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event['status'] = 'CONFIRMED'
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url_hash_substr = hashlib.md5(value["fullurl"].encode()).hexdigest()[0:10]
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# we need to use something that is relatively safe as a UID, so use the first 10 characters of the hexdigest of the wikiurl
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event['uid'] = f'{url_hash_substr}@bitlair.nl'
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# Add the event to the calendar
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cal.add_component(event)
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f = open(sys.argv[1], 'wb')
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f.write(cal.to_ical())
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f.close()
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