243 lines
7.4 KiB
Python
Executable File
243 lines
7.4 KiB
Python
Executable File
#!/usr/bin/python3
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# coding: utf-8
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from abc import ABC, abstractmethod
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from urllib.parse import urlparse
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import urllib.request
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import os
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from selenium import webdriver
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from selenium.webdriver.chrome.service import Service
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from selenium.webdriver.chrome.options import Options
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import icalendar
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from datetime import datetime, date
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import json
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from bs4 import BeautifulSoup
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class Downloader(ABC):
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def __init__(self):
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pass
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@abstractmethod
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def download(self, url):
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pass
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class SimpleDownloader(Downloader):
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def __init__(self):
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super().__init__()
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def download(self, url):
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print("Downloading {}".format(url))
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try:
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resource = urllib.request.urlopen(url)
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data = resource.read().decode(resource.headers.get_content_charset())
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return data
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except:
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return None
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class ChromiumHeadlessDownloader(Downloader):
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def __init__(self):
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super().__init__()
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options = Options()
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options.add_argument("--headless=new")
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service = Service("/usr/bin/chromedriver")
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self.driver = webdriver.Chrome(service=service, options=options)
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def download(self, url):
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print("Download {}".format(url))
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self.driver.get(url)
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return driver.page_source
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class Extractor(ABC):
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def __init__(self):
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self.header = {}
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self.events = []
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@abstractmethod
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def extract(self, content, url, url_human = None):
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pass
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def set_header(self, url):
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self.header["url"] = url
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self.header["date"] = datetime.now()
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def clear_events(self):
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self.events = []
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def add_event(self, title, category, start_day, location, description, tags, uuid, url_human=None, start_time=None, end_day=None, end_time=None, last_modified=None, published=False):
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if title is None:
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print("ERROR: cannot import an event without name")
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return
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if start_day is None:
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print("ERROR: cannot import an event without start day")
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return
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event = {
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"title": title,
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"category": category,
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"start_day": start_day,
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"uuid": uuid,
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"location": location,
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"description": description,
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"tags": tags,
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"published": published
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}
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if url_human is not None:
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event["url_human"] = url_human
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if start_time is not None:
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event["start_time"] = start_time
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if end_day is not None:
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event["end_day"] = end_day
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if end_time is not None:
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event["end_time"] = end_time
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if last_modified is not None:
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event["last_modified"] = last_modified
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self.events.append(event)
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def default_value_if_exists(self, default_values, key):
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return default_values[key] if default_values is not None and key in default_values else None
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def get_structure(self):
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return { "header": self.header, "events": self.events}
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class ICALExtractor(Extractor):
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def __init__(self):
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super().__init__()
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def get_item_from_vevent(self, event, name, raw = False):
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try:
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r = event.decoded(name)
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if raw:
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return r
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else:
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return r.decode()
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except:
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return None
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def get_dt_item_from_vevent(self, event, name):
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item = self.get_item_from_vevent(event, name, raw = True)
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day = None
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time = None
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if item is not None:
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if isinstance(item, datetime):
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day = item.date()
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time = item.time()
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elif isinstance(item, date):
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day = item
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time = None
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return day, time
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def extract(self, content, url, url_human = None, default_values = None, published = False):
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print("Extracting ical events from {}".format(url))
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self.set_header(url)
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self.clear_events()
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self.uuids = {}
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calendar = icalendar.Calendar.from_ical(content)
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for event in calendar.walk('VEVENT'):
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title = self.get_item_from_vevent(event, "SUMMARY")
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category = self.default_value_if_exists(default_values, "category")
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start_day, start_time = self.get_dt_item_from_vevent(event, "DTSTART")
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end_day, end_time = self.get_dt_item_from_vevent(event, "DTEND")
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location = self.get_item_from_vevent(event, "LOCATION")
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if location is None:
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location = self.default_value_if_exists(default_values, "location")
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description = self.get_item_from_vevent(event, "DESCRIPTION")
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if description is not None:
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soup = BeautifulSoup(description)
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delimiter = '\n'
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for line_break in soup.findAll('br'):
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line_break.replaceWith(delimiter)
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description = soup.get_text()
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last_modified = self.get_item_from_vevent(event, "LAST_MODIFIED")
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uuid = self.get_item_from_vevent(event, "UID")
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if uuid is not None:
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if uuid in self.uuids:
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self.uuids[uuid] += 1
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uuid += ":{:04}".format(self.uuids[uuid] - 1)
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else:
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self.uuids[uuid] = 1
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event_url = url + "#" + uuid
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tags = self.default_value_if_exists(default_values, "tags")
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last_modified = self.get_item_from_vevent(event, "LAST-MODIFIED", raw = True)
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rrule = self.get_item_from_vevent(event, "RRULE", raw = True)
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if rrule is not None:
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print("Recurrent event not yet supported", rrule)
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self.add_event(title, category, start_day, location, description, tags, uuid=event_url, url_human=url_human, start_time=start_time, end_day=end_day, end_time=end_time, last_modified=last_modified, published=published)
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return self.get_structure()
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class URL2Events:
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def __init__(self, downloader, extractor):
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self.downloader = downloader
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self.extractor = extractor
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def process(self, url, url_human = None, cache = None, default_values = None, published = False):
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if cache and os.path.exists(cache):
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print("Loading cache ({})".format(cache))
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with open(cache) as f:
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content = "\n".join(f.readlines())
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else:
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content = self.downloader.download(url)
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if cache:
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print("Saving cache ({})".format(cache))
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dir = os.path.dirname(cache)
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if dir != "" and not os.path.exists(dir):
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os.makedirs(dir)
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with open(cache, "w") as text_file:
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text_file.write(content)
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return self.extractor.extract(content, url, url_human, default_values, published)
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if __name__ == "__main__":
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u2e = URL2Events(SimpleDownloader(), ICALExtractor())
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url = "https://calendar.google.com/calendar/ical/programmation.lesaugustes%40gmail.com/public/basic.ics"
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url_human = "https://www.cafelesaugustes.fr/la-programmation/"
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events = u2e.process(url, url_human, cache = "cache-augustes.ical", default_values = {"category": "Autre", "location": "Café lecture les Augustes"}, published = True)
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exportfile = "events-augustes.json"
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print("Saving events to file {}".format(exportfile))
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with open(exportfile, "w") as f:
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json.dump(events, f, indent=4, default=str)
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