fixed crud list

fixed payments
upload -a

payments/utils.py

@@ -0,0 +1,36 @@
+from django.db.models import Q
+
+from payments.models import ContainerTariffPeriod, AdditionalFees
+
+
+def calculate_charges(container):
+    days = (container.expedited_on.date() - container.received_on.date()).days + 1
+    total = 0
+
+    size = '20' if container.container_type.length == 20 else '40'
+
+    tariff = ContainerTariffPeriod.objects.get(
+        Q(to_days__gt=days) | Q(to_days__isnull=True),
+        container_size=size,
+        from_days__lte=days,
+    )
+
+    fees = AdditionalFees.objects.first()
+    storage_charge = days * float(tariff.daily_rate)
+
+    if container.container_type.container_type == 'reefer':
+        storage_charge += days * float(fees.reefer_daily_supplement)
+
+    if container.swept:
+        total += float(fees.sweeping_fee)
+    if container.washed:
+        total += float(fees.fumigation_fee)
+
+    total += storage_charge
+
+    return {
+        'days': days,
+        'storage_charge': storage_charge,
+        'services_charge': total - storage_charge,
+        'total': total,
+    }