fix: add editable work order travel expenses

Introduce a dedicated travel-expenses table for work orders so Broj sati, Količina dnevnica, and Iznos dnevnice can be reviewed and edited before PDF generation. The PDF now uses the stored travel-expenses values, with default HR rate and cache invalidation on updates.

backend/modules/fleet/tests/test_work_order_images_endpoint.py

@@ -274,6 +274,30 @@ class WorkOrderImagesEndpointTests(TestCase):
         self.assertFalse(cached.is_active)
         self.assertEqual(cached.status, 'failed')
 
+    def test_travel_expenses_update_invalidates_work_order_pdf_cache(self):
+        cached = GeneratedWorkOrderPdf.objects.create(
+            work_order=self.work_order,
+            requested_by=self.user,
+            pdf_type='work_order',
+            status='ready',
+            filename='MT150726.work-order.pdf',
+            expires_at=timezone.now() + timedelta(hours=1),
+        )
+        response = self.client.put(
+            f"/api/fleet/work-orders/{self.work_order.pk}/travel-expenses-table/",
+            data={
+                'broj_sati': '9.5',
+                'kolicina_dnevnica': '0.5',
+                'iznos_dnevnica': '30',
+                'daily_rate_country': 'HR',
+            },
+            format='json',
+        )
+        self.assertEqual(response.status_code, 200, response.content)
+        cached.refresh_from_db()
+        self.assertFalse(cached.is_active)
+        self.assertEqual(cached.status, 'failed')
+
     def test_service_records_docx_contains_embedded_service_photos(self):
         VehicleServicePhoto.objects.create(
             service_record=self.service_record,
@@ -491,6 +515,19 @@ class WorkOrderImagesEndpointTests(TestCase):
             },
         )
 
+        save_response = self.client.put(
+            f'/api/fleet/work-orders/{self.work_order.pk}/travel-expenses-table/',
+            data={
+                'broj_sati': '9.5',
+                'kolicina_dnevnica': '0.5',
+                'iznos_dnevnica': '80',
+                'daily_rate_country': 'SI',
+            },
+            format='json',
+        )
+        self.assertEqual(save_response.status_code, 200, save_response.content)
+        self.assertEqual(save_response.data['total_for_payout'], '40.00')
+
         response = self.client.get(f'/api/fleet/work-orders/{self.work_order.pk}/pdf/')
         self.assertEqual(response.status_code, 200, response.content)
         self.assertEqual(response['Content-Type'], 'application/pdf')
@@ -501,6 +538,39 @@ class WorkOrderImagesEndpointTests(TestCase):
         self.assertIn('25.12.2033.', text)
         self.assertIn('9,5', text)
         self.assertIn('0,5', text)
+        self.assertIn('80.00 €', text)
+        self.assertIn('40.00 €', text)
+
+    def test_work_order_travel_expenses_table_defaults_to_hr_rate_and_calculates_total(self):
+        TaskWorkHoursTable.objects.create(
+            task=self.task,
+            data={
+                'rows': [
+                    {
+                        'date': '24.12.2033',
+                        'work_time_from': '08:00',
+                        'work_time_to': '16:00',
+                        'travel_hours': '1',
+                        'work_hours': '6',
+                    },
+                    {
+                        'date': '25.12.2033',
+                        'work_time_from': '09:00',
+                        'work_time_to': '15:00',
+                        'travel_hours': '0,5',
+                        'work_hours': '2',
+                    },
+                ]
+            },
+        )
+
+        response = self.client.get(f'/api/fleet/work-orders/{self.work_order.pk}/travel-expenses-table/')
+        self.assertEqual(response.status_code, 200, response.content)
+        self.assertEqual(response.data['broj_sati'], '9.50')
+        self.assertEqual(response.data['kolicina_dnevnica'], '0.50')
+        self.assertEqual(response.data['daily_rate_country'], 'HR')
+        self.assertEqual(response.data['iznos_dnevnica'], '30.00')
+        self.assertEqual(response.data['total_for_payout'], '15.00')
 
     def test_calculate_daily_quantity_from_hours_follows_business_rules(self):
         self.assertEqual(_calculate_daily_quantity_from_hours(0), 0.0)