improvement: treatment exits contoll adde to appoinment remove action.

backend/src/common/errors/error-codes.ts

@@ -63,6 +63,7 @@ export const ErrorCode = {
   CONFLICT: 'CONFLICT',
   CONFLICT_FUTURE_APPOINTMENTS: 'CONFLICT_FUTURE_APPOINTMENTS',
   APPOINTMENT_PATIENT_LOCKED: 'APPOINTMENT_PATIENT_LOCKED',
+  APPOINTMENT_HAS_TREATMENT: 'APPOINTMENT_HAS_TREATMENT',
   BAD_REQUEST: 'BAD_REQUEST',
   INTERNAL_ERROR: 'INTERNAL_ERROR',
 } as const;

backend/src/modules/appointments/appointments.service.ts

@@ -1,6 +1,7 @@
 import {
   BadRequestException,
   ForbiddenException,
+  HttpStatus,
   Injectable,
   NotFoundException,
 } from '@nestjs/common';
@@ -16,6 +17,7 @@ import { ListAppointmentsDto } from './dto/list-appointments.dto';
 import { UpdateAppointmentDto } from './dto/update-appointment.dto';
 import { TreatmentCatalogService } from '../treatment-catalog/treatment-catalog.service';
 import { hasEffectivePermission } from '../../common/membership-permissions';
+import { AppException, ErrorCode } from '../../common/errors';
 
 const MS_PER_DAY = 86_400_000;
 
@@ -215,9 +217,7 @@ export class AppointmentsService {
         select: { id: true },
       });
       if (linkedTreatment) {
-        throw new BadRequestException(
-          'Cannot change the patient while a treatment is linked to this appointment',
-        );
+        throw new AppException(ErrorCode.APPOINTMENT_PATIENT_LOCKED, HttpStatus.CONFLICT);
       }
     }
 
@@ -256,13 +256,17 @@ export class AppointmentsService {
 
     const existing = await this.prisma.appointment.findFirst({
       where: { id, organizationId },
-      select: { id: true },
+      select: { id: true, treatment: { select: { id: true } } },
     });
 
     if (!existing) {
       throw new NotFoundException('Appointment not found');
     }
 
+    if (existing.treatment) {
+      throw new AppException(ErrorCode.APPOINTMENT_HAS_TREATMENT, HttpStatus.CONFLICT);
+    }
+
     await this.prisma.appointment.delete({
       where: { id },
     });