Files
stiftung-management-system/app/stiftung/management/commands/fix_advance_payment_dates.py
Jan Remmer Siebels 6adedc71c5 Fix semester system: 2x yearly docs, 4x yearly payments with Q4 on Sep 15
Document Submission (twice yearly):
- Q1 & Q2 documents: Due March 15 (Spring semester)
- Q3 & Q4 documents: Due September 15 (Fall semester)

Payment Schedule (quarterly):
- Q1 payments: Due March 15
- Q2 payments: Due June 15
- Q3 payments: Due September 15
- Q4 payments: Due September 15 (aligned with Fall semester docs)

This gives the desired Q4 payment due date of 15.09.2025 while maintaining
quarterly payment frequency and semester-based document submissions.
2025-10-01 12:36:47 +02:00

99 lines
4.3 KiB
Python

from django.core.management.base import BaseCommand
from django.db import transaction
from datetime import date
from stiftung.models import DestinataerUnterstuetzung
class Command(BaseCommand):
help = 'Fix all quarterly payment dates to use advance payment schedule'
def add_arguments(self, parser):
parser.add_argument(
'--dry-run',
action='store_true',
help='Show what would be updated without making changes',
)
parser.add_argument(
'--year',
type=int,
default=2025,
help='Year to fix payments for (default: 2025)',
)
def handle(self, *args, **options):
dry_run = options['dry_run']
year = options['year']
if dry_run:
self.stdout.write(self.style.WARNING('DRY RUN MODE - No changes will be made'))
self.stdout.write(f'Checking quarterly payments for {year} using advance payment schedule...')
# Define correct quarterly payment schedule
quarterly_schedule = {
f'Q1/{year}': date(year, 3, 15), # Q1 payment due March 15
f'Q2/{year}': date(year, 6, 15), # Q2 payment due June 15
f'Q3/{year}': date(year, 9, 15), # Q3 payment due September 15
f'Q4/{year}': date(year, 9, 15), # Q4 payment due September 15 (semester alignment)
}
total_fixed = 0
for quarter_desc, correct_date in quarterly_schedule.items():
# Find payments for this quarter that have wrong dates
wrong_payments = DestinataerUnterstuetzung.objects.filter(
beschreibung__icontains=quarter_desc
).exclude(faellig_am=correct_date)
quarter_count = wrong_payments.count()
if quarter_count > 0:
self.stdout.write(f'\n{quarter_desc}: Found {quarter_count} payments with wrong due dates')
with transaction.atomic():
for payment in wrong_payments:
old_date = payment.faellig_am
if not dry_run:
payment.faellig_am = correct_date
payment.save(update_fields=['faellig_am'])
total_fixed += 1
# Show some examples
if total_fixed <= 10 or options['verbosity'] >= 2:
self.stdout.write(
f' {payment.destinataer.get_full_name()}: '
f'{old_date}{correct_date} ({payment.betrag}€)'
)
else:
self.stdout.write(f'{quarter_desc}: ✓ All payments have correct due date ({correct_date})')
# Summary
if total_fixed == 0:
self.stdout.write(self.style.SUCCESS(f'\n✓ All {year} quarterly payments already have correct advance payment dates!'))
elif dry_run:
self.stdout.write(
self.style.WARNING(f'\nDRY RUN: Would fix {total_fixed} payment due dates')
)
else:
self.stdout.write(
self.style.SUCCESS(f'\n✅ Successfully fixed {total_fixed} payment due dates')
)
# Show the quarterly payment schedule
self.stdout.write(f'\nQuarterly Payment Schedule for {year}:')
for quarter_desc, due_date in quarterly_schedule.items():
self.stdout.write(f' {quarter_desc}: Due {due_date.strftime("%B %d, %Y")}')
# Check for other years that might need fixing
if year == 2025:
other_year_payments = DestinataerUnterstuetzung.objects.filter(
beschreibung__regex=r'Q[1-4]/202[6-9]'
).exclude(
faellig_am__in=[date(2026, 3, 15), date(2026, 6, 15), date(2026, 9, 15), date(2026, 9, 15)]
).count()
if other_year_payments > 0:
self.stdout.write(f'\n⚠️ Found {other_year_payments} payments for other years that may need fixing')
self.stdout.write(' Run this command with --year 2026, etc. to fix other years')