132 lines
5.0 KiB
Python
132 lines
5.0 KiB
Python
##############################################################################
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#
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# Gestion scolarite IUT
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#
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# Copyright (c) 1999 - 2024 Emmanuel Viennet. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Emmanuel Viennet emmanuel.viennet@viennet.net
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#
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##############################################################################
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"""Accès aux emplois du temps
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Génération des ics par enseignant à partir des ics par formation.
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A utiliser quand les edt des enseignants ne sont pas fournis par l'extérieur.
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Utilise la configuration globale pour extraire l'enseignant de chaque évènement.
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Les évènements sans enseignant identifiable sont ignorés.
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Tous les ics de `edt_ics_path`/*.ics sont lus.
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L'edt de chaque enseignant est enregistré dans `edt_ics_user_path`/user_edt_id.ics
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La construction des ics se fait en mémoire, les fichiers sont écrits à la fin.
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"""
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from collections import defaultdict
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import time
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import icalendar
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from flask import flash
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from app import log
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from app.auth.models import User
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from app.models import ScoDocSiteConfig
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from app.scodoc import sco_edt_cal
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from app.scodoc.sco_exceptions import ScoValueError
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import sco_version
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def _calendar_factory() -> icalendar.Calendar:
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"Create a new calendar"
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cal = icalendar.Calendar()
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cal.add(
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"prodid", f"-//{sco_version.SCONAME} {sco_version.SCOVERSION}//scodoc.org//"
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)
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cal.add("version", "2.0")
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return cal
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def generate_ens_calendars():
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"""Regénère les calendriers de tous les enseignants"""
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t0 = time.time()
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edt_ics_uid_field = ScoDocSiteConfig.get("edt_ics_uid_field")
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if not edt_ics_uid_field:
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log("generate_ens_calendars: no edt_ics_uid_field, aborting")
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return
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edt_ics_user_path = ScoDocSiteConfig.get("edt_ics_user_path")
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if not edt_ics_user_path:
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log("generate_ens_calendars: no edt_ics_user_path, aborting")
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return
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edt_ics_uid_pattern = sco_edt_cal.get_ics_uid_pattern()
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edt_by_uid = defaultdict(_calendar_factory)
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edt2user: dict[str, User | None] = {} # construit au fur et à mesure (cache)
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nb_events = 0 # to log
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ics_filenames = sco_edt_cal.list_edt_calendars()
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for ics_filename in ics_filenames:
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try:
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_, calendar = sco_edt_cal.load_calendar(ics_filename)
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except ScoValueError:
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continue # skip, ignoring errors
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if not calendar:
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continue
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events = [e for e in calendar.walk() if e.name == "VEVENT"]
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nb_events += len(events)
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ens: User | None = None
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for event in events:
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ens_edt_ids = sco_edt_cal.extract_event_edt_ids(
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event, edt_ics_uid_field, edt_ics_uid_pattern
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)
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users = []
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for ens_edt_id in ens_edt_ids:
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if ens_edt_id in edt2user:
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ens = edt2user[ens_edt_id]
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else:
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ens = User.query.filter_by(edt_id=ens_edt_id).first()
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edt2user[ens_edt_id] = ens
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if ens:
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users.append(ens)
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edt_by_uid[ens_edt_id].add_component(event)
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if users: # si un utilisateur est reconnu dans l'event
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event.add("X-ScoDoc-users", ",".join([u.user_name for u in users]))
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_write_user_calendars(edt_by_uid)
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log(
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f"""generate_ens_calendars: done in {(time.time()-t0):g}s, processed {
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nb_events} events from {len(ics_filenames)} calendars, for {len(edt_by_uid)} users"""
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)
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def _write_user_calendars(edt_by_uid: defaultdict):
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"""Write all ics files, one per user"""
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for edt_id, cal in edt_by_uid.items():
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if not len(cal): # nb: empty cals are True
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continue # safeguard, never generate empty cals
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filename = sco_edt_cal.get_ics_user_edt_filename(edt_id)
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if filename:
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log(f"generate_ens_calendars: writing {filename}")
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try:
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with open(filename, "wb") as f:
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f.write(cal.to_ical())
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except PermissionError:
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log("_write_user_calendars: permission denied")
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flash("Erreur: permission écriture calendrier non accordée")
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return # abort
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except FileNotFoundError:
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log("_write_user_calendars: No such file or directory")
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flash("Erreur: chemin incorrect pour écrire le calendrier")
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return # abort
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