forked from ScoDoc/ScoDoc
299 lines
11 KiB
Python
299 lines
11 KiB
Python
# -*- mode: python -*-
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# -*- coding: utf-8 -*-
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##############################################################################
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#
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# Gestion scolarite IUT
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#
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# Copyright (c) 1999 - 2021 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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"""Système de notification par mail des excès d'absences
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(see ticket #147)
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Il suffit d'appeler abs_notify() après chaque ajout d'absence.
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"""
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import datetime
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from email.mime.multipart import MIMEMultipart
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from email.mime.text import MIMEText
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from email.header import Header
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from flask import g, url_for
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from app.scodoc import sco_emails
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import app.scodoc.notesdb as ndb
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import app.scodoc.sco_utils as scu
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from app.scodoc.notes_log import log
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from app.scodoc.scolog import logdb
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from app.scodoc import sco_etud
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from app.scodoc import sco_formsemestre
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from app.scodoc import sco_preferences
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from app.scodoc import sco_users
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def abs_notify(context, etudid, date):
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"""Check if notifications are requested and send them
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Considère le nombre d'absence dans le semestre courant
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(s'il n'y a pas de semestre courant, ne fait rien,
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car l'etudiant n'est pas inscrit au moment de l'absence!).
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"""
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from app.scodoc import sco_abs
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sem = retreive_current_formsemestre(context, etudid, date)
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if not sem:
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return # non inscrit a la date, pas de notification
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nbabs, nbabsjust = sco_abs.get_abs_count(etudid, sem)
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do_abs_notify(context, sem, etudid, date, nbabs, nbabsjust)
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def do_abs_notify(context, sem, etudid, date, nbabs, nbabsjust):
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"""Given new counts of absences, check if notifications are requested and send them."""
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# prefs fallback to global pref if sem is None:
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if sem:
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formsemestre_id = sem["formsemestre_id"]
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else:
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formsemestre_id = None
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prefs = sco_preferences.SemPreferences(formsemestre_id=sem["formsemestre_id"])
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destinations = abs_notify_get_destinations(
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context, sem, prefs, etudid, date, nbabs, nbabsjust
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)
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msg = abs_notification_message(context, sem, prefs, etudid, nbabs, nbabsjust)
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if not msg:
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return # abort
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# Vérification fréquence (pour ne pas envoyer de mails trop souvent)
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abs_notify_max_freq = sco_preferences.get_preference("abs_notify_max_freq")
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destinations_filtered = []
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for email_addr in destinations:
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nbdays_since_last_notif = user_nbdays_since_last_notif(
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context, email_addr, etudid
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)
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if (nbdays_since_last_notif is None) or (
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nbdays_since_last_notif >= abs_notify_max_freq
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):
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destinations_filtered.append(email_addr)
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if destinations_filtered:
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abs_notify_send(
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context,
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destinations_filtered,
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etudid,
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msg,
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nbabs,
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nbabsjust,
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formsemestre_id,
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)
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def abs_notify_send(
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context, destinations, etudid, msg, nbabs, nbabsjust, formsemestre_id
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):
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"""Actually send the notification by email, and register it in database"""
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cnx = ndb.GetDBConnexion()
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log("abs_notify: sending notification to %s" % destinations)
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cursor = cnx.cursor(cursor_factory=ndb.ScoDocCursor)
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for email in destinations:
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del msg["To"]
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msg["To"] = email
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sco_emails.sendEmail(context, msg)
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ndb.SimpleQuery(
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"""insert into absences_notifications
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(etudid, email, nbabs, nbabsjust, formsemestre_id)
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VALUES (%(etudid)s, %(email)s, %(nbabs)s, %(nbabsjust)s, %(formsemestre_id)s)
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""",
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vars(),
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cursor=cursor,
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)
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logdb(
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cnx=cnx,
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method="abs_notify",
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etudid=etudid,
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msg="sent to %s (nbabs=%d)" % (destinations, nbabs),
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)
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def abs_notify_get_destinations(context, sem, prefs, etudid, date, nbabs, nbabsjust):
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"""Returns set of destination emails to be notified"""
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formsemestre_id = sem["formsemestre_id"]
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destinations = [] # list of email address to notify
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if abs_notify_is_above_threshold(
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context, etudid, nbabs, nbabsjust, formsemestre_id
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):
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if sem and prefs["abs_notify_respsem"]:
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# notifie chaque responsable du semestre
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for responsable_id in sem["responsables"]:
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u = sco_users.user_info(responsable_id)
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if u["email"]:
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destinations.append(u["email"])
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if prefs["abs_notify_chief"] and prefs["email_chefdpt"]:
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destinations.append(prefs["email_chefdpt"])
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if prefs["abs_notify_email"]:
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destinations.append(prefs["abs_notify_email"])
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if prefs["abs_notify_etud"]:
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etud = sco_etud.get_etud_info(etudid=etudid, filled=1)[0]
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if etud["email_default"]:
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destinations.append(etud["email_default"])
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# Notification (à chaque fois) des resp. de modules ayant des évaluations
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# à cette date
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# nb: on pourrait prevoir d'utiliser un autre format de message pour ce cas
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if sem and prefs["abs_notify_respeval"]:
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mods = mod_with_evals_at_date(context, date, etudid)
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for mod in mods:
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u = sco_users.user_info(mod["responsable_id"])
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if u["email"]:
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destinations.append(u["email"])
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# uniq
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destinations = set(destinations)
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return destinations
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def abs_notify_is_above_threshold(context, etudid, nbabs, nbabsjust, formsemestre_id):
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"""True si il faut notifier les absences (indépendemment du destinataire)
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nbabs: nombre d'absence (de tous types, unité de compte = demi-journée)
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nbabsjust: nombre d'absences justifiées
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(nbabs > abs_notify_abs_threshold)
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(nbabs - nbabs_last_notified) > abs_notify_abs_increment
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"""
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abs_notify_abs_threshold = sco_preferences.get_preference(
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"abs_notify_abs_threshold", formsemestre_id
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)
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abs_notify_abs_increment = sco_preferences.get_preference(
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"abs_notify_abs_increment", formsemestre_id
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)
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nbabs_last_notified = etud_nbabs_last_notified(context, etudid, formsemestre_id)
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if nbabs_last_notified == 0:
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if nbabs > abs_notify_abs_threshold:
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return True # first notification
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else:
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return False
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else:
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if (nbabs - nbabs_last_notified) >= abs_notify_abs_increment:
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return True
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return False
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def etud_nbabs_last_notified(context, etudid, formsemestre_id=None):
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"""nbabs lors de la dernière notification envoyée pour cet étudiant dans ce semestre
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ou sans semestre (ce dernier cas est nécessaire pour la transition au nouveau code)"""
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cnx = ndb.GetDBConnexion()
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cursor = cnx.cursor(cursor_factory=ndb.ScoDocCursor)
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cursor.execute(
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"""select * from absences_notifications where etudid = %(etudid)s and (formsemestre_id = %(formsemestre_id)s or formsemestre_id is NULL) order by notification_date desc""",
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vars(),
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)
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res = cursor.dictfetchone()
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if res:
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return res["nbabs"]
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else:
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return 0
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def user_nbdays_since_last_notif(context, email_addr, etudid):
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"""nb days since last notification to this email, or None if no previous notification"""
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cnx = ndb.GetDBConnexion()
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cursor = cnx.cursor(cursor_factory=ndb.ScoDocCursor)
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cursor.execute(
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"""select * from absences_notifications where email = %(email_addr)s and etudid=%(etudid)s order by notification_date desc""",
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{"email_addr": email_addr, "etudid": etudid},
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)
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res = cursor.dictfetchone()
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if res:
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now = datetime.datetime.now(res["notification_date"].tzinfo)
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return (now - res["notification_date"]).days
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else:
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return None
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def abs_notification_message(context, sem, prefs, etudid, nbabs, nbabsjust):
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"""Mime notification message based on template.
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returns None if sending should be canceled (emplty template).
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"""
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from app.scodoc import sco_bulletins
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etud = sco_etud.get_etud_info(etudid=etudid, filled=True)[0]
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# Variables accessibles dans les balises du template: %(nom_variable)s :
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values = sco_bulletins.make_context_dict(context, sem, etud)
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values["nbabs"] = nbabs
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values["nbabsjust"] = nbabsjust
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values["nbabsnonjust"] = nbabs - nbabsjust
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values["url_ficheetud"] = url_for(
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"scolar.ficheEtud", scodoc_dept=g.scodoc_dept, etudid=etudid
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)
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template = prefs["abs_notification_mail_tmpl"]
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if template:
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txt = prefs["abs_notification_mail_tmpl"] % values
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else:
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log("abs_notification_message: empty template, not sending message")
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return None
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subject = """Trop d'absences pour %(nomprenom)s""" % etud
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#
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msg = MIMEMultipart()
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subj = Header("[ScoDoc] " + subject, scu.SCO_ENCODING)
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msg["Subject"] = subj
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msg["From"] = prefs["email_from_addr"]
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txt = MIMEText(txt, "plain", scu.SCO_ENCODING)
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msg.attach(txt)
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return msg
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def retreive_current_formsemestre(context, etudid, cur_date):
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"""Get formsemestre dans lequel etudid est (ou était) inscrit a la date indiquée
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date est une chaine au format ISO (yyyy-mm-dd)
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"""
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req = """SELECT i.formsemestre_id
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FROM notes_formsemestre_inscription i, notes_formsemestre sem
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WHERE sem.id = i.formsemestre_id AND i.etudid = %(etudid)s
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AND (%(cur_date)s >= sem.date_debut) AND (%(cur_date)s <= sem.date_fin)
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"""
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r = ndb.SimpleDictFetch(req, {"etudid": etudid, "cur_date": cur_date})
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if not r:
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return None
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# s'il y a plusieurs semestres, prend le premier (rarissime et non significatif):
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sem = sco_formsemestre.get_formsemestre(context, r[0]["formsemestre_id"])
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return sem
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def mod_with_evals_at_date(context, date_abs, etudid):
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"""Liste des moduleimpls avec des evaluations à la date indiquée"""
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req = """SELECT m.id AS moduleimpl_id, m.*
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FROM notes_moduleimpl m, notes_evaluation e, notes_moduleimpl_inscription i
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WHERE m.id = e.moduleimpl_id AND e.moduleimpl_id = i.moduleimpl_id
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AND i.etudid = %(etudid)s AND e.jour = %(date_abs)s"""
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r = ndb.SimpleDictFetch(req, {"etudid": etudid, "date_abs": date_abs})
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return r
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