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Implement advance payment schedule for quarterly payments

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BREAKING CHANGE: Payment due dates now follow advance payment schedule:
- Q1 payments: Due December 15 of previous year
- Q2 payments: Due March 15 of same year
- Q3 payments: Due June 15 of same year
- Q4 payments: Due September 15 of same year

Changes:
- Updated create_quarterly_support_payment() to use advance schedule
- Enhanced diagnostic commands to check advance payment dates
- Added fix_advance_payment_dates command for comprehensive fixes
- Updated fix_q4_payment_dates to correct Q4 from 31.12 to 15.09

This aligns with semester-based document submissions while maintaining
the advance payment system where payments are made before each quarter.
This commit is contained in:
Jan Remmer Siebels
2025-10-01 12:04:34 +02:00
parent 149078aaee
commit 6aa218004c
4 changed files with 143 additions and 26 deletions
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18
app/stiftung/management/commands/fix_q4_payment_dates.py
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@@ -20,7 +20,7 @@ class Command(BaseCommand):
if dry_run:
self.stdout.write(self.style.WARNING('DRY RUN MODE - No changes will be made'))
# Find all Q4/2025 payments with wrong due date (Dec 31 instead of Dec 15)
# Find all Q4/2025 payments with wrong due date (Dec 31 instead of Sep 15)
wrong_payments = DestinataerUnterstuetzung.objects.filter(
faellig_am='2025-12-31',
beschreibung__icontains='Q4/2025'
@@ -34,7 +34,7 @@ class Command(BaseCommand):
return
updated_count = 0
correct_date = date(2025, 12, 15) # December 15, 2025
correct_date = date(2025, 9, 15) # September 15, 2025 (advance payment for Q4)
with transaction.atomic():
for payment in wrong_payments:
@@ -57,13 +57,13 @@ class Command(BaseCommand):
if dry_run:
self.stdout.write(
self.style.SUCCESS(
f'DRY RUN: Would update {updated_count} payment due dates from 31.12.2025 to 15.12.2025'
f'DRY RUN: Would update {updated_count} payment due dates from 31.12.2025 to 15.09.2025'
)
)
else:
self.stdout.write(
self.style.SUCCESS(
f'Successfully updated {updated_count} payment due dates to December 15, 2025'
f'Successfully updated {updated_count} payment due dates to September 15, 2025'
)
)
@@ -86,8 +86,8 @@ class Command(BaseCommand):
self.stdout.write(f' ⚠️ {quarter_desc}: {old_date_payments} payments still use old date {old_expected}')
self.stdout.write(f' Should be: {new_expected}')
self.stdout.write('\nSemester-based payment schedule:')
self.stdout.write(' Q1: March 15 (Spring semester)')
self.stdout.write(' Q2: June 15 (Auto-approved with Q1)')
self.stdout.write(' Q3: September 15 (Fall semester)')
self.stdout.write(' Q4: December 15 (Auto-approved with Q3)')
self.stdout.write('\nAdvance payment schedule (payments made in advance):')
self.stdout.write(' Q1 payments: Due December 15 of previous year')
self.stdout.write(' Q2 payments: Due March 15 of same year')
self.stdout.write(' Q3 payments: Due June 15 of same year')
self.stdout.write(' Q4 payments: Due September 15 of same year')