feat: Mise en place des paiements en plusieurs fois (partie BACK) [#25]

Back-End/School/management/commands/init_payment_plans.py

@@ -0,0 +1,58 @@
+from django.core.management.base import BaseCommand
+from django.utils import timezone
+from dateutil.relativedelta import relativedelta
+from School.models import PaymentPlan, PaymentPlanType, FeeType
+
+class Command(BaseCommand):
+    help = 'Initialize or update Payment Plans'
+
+    def handle(self, *args, **kwargs):
+        self.create_or_update_payment_plans()
+
+    def create_or_update_payment_plans(self):
+        current_date = timezone.now().date()
+
+        for fee_type in FeeType.choices:
+            fee_type_value = fee_type[0]
+
+            # 1 fois - échéance à 1 mois à partir de la date actuelle
+            PaymentPlan.objects.update_or_create(
+                frequency=PaymentPlanType.ONE_TIME,
+                type=fee_type_value,
+                defaults={
+                    'due_dates': [current_date + relativedelta(months=1)],
+                    'is_active': True
+                }
+            )
+
+            # 3 fois - échéances espacées de 4 mois
+            PaymentPlan.objects.update_or_create(
+                frequency=PaymentPlanType.THREE_TIMES,
+                type=fee_type_value,
+                defaults={
+                    'due_dates': [current_date + relativedelta(months=1+4*i) for i in range(3)],
+                    'is_active': False
+                }
+            )
+
+            # 10 fois - échéances espacées d'un mois
+            PaymentPlan.objects.update_or_create(
+                frequency=PaymentPlanType.TEN_TIMES,
+                type=fee_type_value,
+                defaults={
+                    'due_dates': [current_date + relativedelta(months=1+i) for i in range(10)],
+                    'is_active': False
+                }
+            )
+
+            # 12 fois - échéances espacées d'un mois
+            PaymentPlan.objects.update_or_create(
+                frequency=PaymentPlanType.TWELVE_TIMES,
+                type=fee_type_value,
+                defaults={
+                    'due_dates': [current_date + relativedelta(months=1+i) for i in range(12)],
+                    'is_active': False
+                }
+            )
+
+        self.stdout.write(self.style.SUCCESS('Payment Plans initialized or updated successfully'))