prvi kod za live uporabu

backend/modules/services.py

@@ -0,0 +1,70 @@
+from rest_framework.exceptions import ValidationError
+from django.db import transaction
+from .models import Vehicle, WorkOrder, VehicleServiceRecord
+from decimal import Decimal
+
+
+class VehicleService:
+    @staticmethod
+    def create_vehicle(data: dict) -> Vehicle:
+        vehicle = Vehicle(**data)
+        try:
+            vehicle.full_clean()
+        except Exception as e:
+            raise ValidationError({"detail": str(e)})
+
+        vehicle.save()
+        return vehicle
+
+    @staticmethod
+    def update_vehicle(instance: Vehicle, data: dict) -> Vehicle:
+        for k, v in data.items():
+            setattr(instance, k, v)
+        try:
+            instance.full_clean()
+        except Exception as e:
+            raise ValidationError({"detail": str(e)})
+        instance.save()
+        return instance
+
+    @staticmethod
+    def create_work_order(data: dict) -> WorkOrder:
+        # expecting creator in data
+        wo = WorkOrder(**data)
+        try:
+            wo.full_clean()
+        except Exception as e:
+            raise ValidationError({"detail": str(e)})
+
+        # save will handle updating vehicle mileage if end_mileage set
+        with transaction.atomic():
+            wo.save()
+        return wo
+
+    @staticmethod
+    def update_work_order(instance: WorkOrder, data: dict) -> WorkOrder:
+        for k, v in data.items():
+            setattr(instance, k, v)
+        try:
+            instance.full_clean()
+        except Exception as e:
+            raise ValidationError({"detail": str(e)})
+        with transaction.atomic():
+            instance.save()
+        return instance
+
+    @staticmethod
+    def create_service_record(data: dict) -> VehicleServiceRecord:
+        rec = VehicleServiceRecord(**data)
+        try:
+            rec.full_clean()
+        except Exception as e:
+            raise ValidationError({"detail": str(e)})
+        with transaction.atomic():
+            rec.save()
+            # optionally update vehicle.current_mileage if rec.mileage > current
+            v = rec.vehicle
+            if rec.mileage and rec.mileage > (v.current_mileage or 0):
+                v.current_mileage = rec.mileage
+                v.save()
+        return rec