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import logging
from django.utils.translation import gettext as _
from calendarweek import CalendarWeek
from tqdm import tqdm
from aleksis.apps.chronos import models as chronos_models
from aleksis.apps.chronos.models import ExtraLesson, Lesson, ValidityRange
from .... import models as mysql_models
from ..util import (
TQDM_DEFAULTS,
connect_untis_fields,
date_to_untis_date,
get_first_period,
get_last_period,
move_weekday_to_range,
run_default_filter,
untis_date_to_date,
untis_split_second,
)
logger = logging.getLogger(__name__)
def import_exams(
validity_range: ValidityRange,
time_periods_ref,
subjects_ref,
teachers_ref,
rooms_ref,
):
ref = {}
# Get absences
exams = (
run_default_filter(validity_range, mysql_models.Exam.objects, filter_term=False)
.filter(
date__lte=date_to_untis_date(validity_range.date_end),
date__gte=date_to_untis_date(validity_range.date_start),
)
.order_by("exam_id")
)
existing_exams = []
for exam in tqdm(exams, desc="Import exams", **TQDM_DEFAULTS):
import_ref = exam.exam_id
logger.info("Import exam {}".format(import_ref))
# Build values
title = exam.name
comment = exam.text
day = untis_date_to_date(exam.date)
period_from = exam.lessonfrom
period_to = exam.lessonto
weekday = day.weekday()
week = CalendarWeek.from_date(day)
# Check min/max weekdays
weekday = move_weekday_to_range(time_periods_ref, weekday)
# Check min/max periods
first_period = get_first_period(time_periods_ref, weekday)
last_period = get_last_period(time_periods_ref, weekday)
if period_from == 0:
period_from = first_period
if period_to == 0:
period_to = last_period
time_period_from = time_periods_ref[weekday][period_from]
time_period_to = time_periods_ref[weekday][period_to]
# Get groups, teachers and rooms
raw_exams = connect_untis_fields(exam, "examelement", 10)
first = True
lesson = None
subject = None
exams = []
for raw_exam in raw_exams:
el = untis_split_second(raw_exam, remove_empty=False)
if first:
lesson_id = int(el[0])
subject_id = int(el[1])
lesson = Lesson.objects.get(validity=validity_range, lesson_id_untis=lesson_id)
subject = subjects_ref[subject_id]
first = False
period = int(el[4])
period = time_periods_ref[weekday][period]
teacher_id = int(el[5])
room_id = int(el[6])
teacher = teachers_ref[teacher_id]
room = rooms_ref[room_id]
exams.append((period, teacher, room))
if not lesson or not subject:
logger.warning(f"Skip exam {import_ref} due to missing data.")
continue
new_exam, created = chronos_models.Exam.objects.update_or_create(
import_ref_untis=import_ref,
defaults={
"date": day,
"lesson": lesson,
"period_from": time_period_from,
"period_to": time_period_to,
"title": title,
"comment": comment,
"school_term": validity_range.school_term,
},
)
if created:
logger.info(" New exam created")
extra_lesson_pks = []
for exam in exams:
period, teacher, room = exam
comment = new_exam.title or _("Exam")
extra_lesson, __ = ExtraLesson.objects.get_or_create(
exam=new_exam,
period=period,
defaults={
"room": room,
"week": week.week,
"year": week.year,
"comment": comment,
"subject": subject,
},
)
if (
extra_lesson.room != room
or extra_lesson.week != week.week
or extra_lesson.year != week.year
or extra_lesson.comment != comment
or extra_lesson.subject != subject
):
extra_lesson.room = room
extra_lesson.week = week.week
extra_lesson.year = week.year
extra_lesson.comment = comment
extra_lesson.subject = subject
extra_lesson.save()
extra_lesson.groups.set(lesson.groups.all())
extra_lesson.teachers.set([teacher])
extra_lesson_pks.append(extra_lesson.pk)
# Delete no-longer necessary extra lessons
ExtraLesson.objects.filter(exam=new_exam).exclude(pk__in=extra_lesson_pks).delete()
existing_exams.append(import_ref)
ref[import_ref] = new_exam
# Delete all no longer existing exams
for e in chronos_models.Exam.objects.within_dates(
validity_range.date_start, validity_range.date_end
):
if e.import_ref_untis and e.import_ref_untis not in existing_exams:
logger.info("exam {} deleted".format(e.id))
e.delete()