feat(repairs): add repair management foundation

backend/hermes/app/services/repair_service.py

@@ -0,0 +1,157 @@
+from datetime import UTC, datetime
+
+from fastapi import HTTPException, status
+from sqlalchemy.exc import IntegrityError
+from sqlalchemy.orm import Session
+from starlette.requests import Request
+
+from app.models.repair import Repair
+from app.models.user import User
+from app.repositories.customer_repository import CustomerRepository
+from app.repositories.repair_repository import RepairRepository
+from app.schemas.repair import RepairCreate, RepairIntakePayload, RepairStatusUpdate, RepairUpdate
+from app.services.audit_service import sanitize, write_audit_log
+
+
+def repair_label(repair: Repair) -> str:
+    return f"{repair.repair_number} · {repair.customer_name}"
+
+
+class RepairService:
+    @staticmethod
+    def create(db: Session, payload: RepairCreate, *, actor: User | None, request: Request | None = None) -> Repair:
+        RepairService._validate_customer(db, payload.customer_id)
+        repair_number = RepairRepository.get_next_number(db, datetime.now(UTC).year)
+        try:
+            repair = RepairRepository.create(db, payload, repair_number=repair_number)
+        except IntegrityError:
+            db.rollback()
+            repair_number = RepairRepository.get_next_number(db, datetime.now(UTC).year)
+            repair = RepairRepository.create(db, payload, repair_number=repair_number)
+        write_audit_log(
+            db,
+            action="repairs.create",
+            entity_type="repairs",
+            entity_id=repair.id,
+            entity_label=repair_label(repair),
+            actor=actor,
+            request=request,
+            after_data=repair,
+        )
+        return repair
+
+    @staticmethod
+    def update(db: Session, repair: Repair, payload: RepairUpdate, *, actor: User, request: Request) -> Repair:
+        RepairService._validate_customer(db, payload.customer_id)
+        before_data = sanitize(repair)
+        updated = RepairRepository.update(db, repair, payload)
+        write_audit_log(
+            db,
+            action="repairs.update",
+            entity_type="repairs",
+            entity_id=updated.id,
+            entity_label=repair_label(updated),
+            actor=actor,
+            request=request,
+            before_data=before_data,
+            after_data=updated,
+        )
+        return updated
+
+    @staticmethod
+    def update_status(db: Session, repair: Repair, payload: RepairStatusUpdate, *, actor: User, request: Request) -> Repair:
+        before_data = sanitize(repair)
+        updated = RepairRepository.update_status(db, repair, payload, actor_user_id=actor.id)
+        write_audit_log(
+            db,
+            action="repairs.status_update",
+            entity_type="repairs",
+            entity_id=updated.id,
+            entity_label=repair_label(updated),
+            actor=actor,
+            request=request,
+            before_data=before_data,
+            after_data=updated,
+            metadata={"old_status": before_data.get("status") if isinstance(before_data, dict) else None, "new_status": updated.status},
+        )
+        return updated
+
+    @staticmethod
+    def cancel(db: Session, repair: Repair, *, actor: User, request: Request) -> Repair:
+        before_data = sanitize(repair)
+        updated = RepairRepository.cancel(db, repair, actor_user_id=actor.id)
+        write_audit_log(
+            db,
+            action="repairs.cancel",
+            entity_type="repairs",
+            entity_id=updated.id,
+            entity_label=repair_label(updated),
+            actor=actor,
+            request=request,
+            before_data=before_data,
+            after_data=updated,
+        )
+        return updated
+
+    @staticmethod
+    def create_from_intake(db: Session, payload: RepairIntakePayload, *, request: Request | None = None) -> Repair:
+        event = RepairRepository.create_intake_event(
+            db,
+            external_source="website",
+            external_reference=payload.source_reference,
+            payload=payload.model_dump(mode="json"),
+            status="received",
+        )
+        try:
+            repair_payload = RepairCreate(
+                customer_id=None,
+                contact_id=None,
+                status="new",
+                priority="normal",
+                source="website",
+                source_reference=payload.source_reference,
+                customer_name=payload.name,
+                customer_email=payload.email,
+                customer_phone=payload.phone,
+                device_manufacturer=payload.manufacturer,
+                device_model=payload.model,
+                device_serial_number=payload.serial_number,
+                device_type=payload.device_type,
+                accessories=payload.accessories,
+                fault_description=payload.fault_description,
+                previous_work=payload.previous_work,
+                device_opened=payload.device_opened,
+                intake_notes="Website Intake",
+            )
+            repair = RepairService.create(db, repair_payload, actor=None, request=request)
+            RepairRepository.update_intake_event(db, event, status="processed", repair_id=repair.id)
+            write_audit_log(
+                db,
+                action="repairs.intake_processed",
+                entity_type="repairs",
+                entity_id=repair.id,
+                entity_label=repair_label(repair),
+                request=request,
+                metadata={"external_source": "website", "external_reference": payload.source_reference},
+            )
+            return repair
+        except Exception as exc:
+            RepairRepository.update_intake_event(db, event, status="failed", error_message="Intake konnte nicht verarbeitet werden")
+            write_audit_log(
+                db,
+                action="repairs.intake_failed",
+                entity_type="repairs",
+                request=request,
+                metadata={"external_source": "website", "external_reference": payload.source_reference},
+            )
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail="Reparaturannahme konnte nicht verarbeitet werden",
+            ) from exc
+
+    @staticmethod
+    def _validate_customer(db: Session, customer_id: int | None) -> None:
+        if customer_id is None:
+            return
+        if CustomerRepository.get_by_id(db, customer_id) is None:
+            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Kunde nicht gefunden")