fix: dodaj fotografije servisnih zapisa u DOCX

DOCX izvjestaj servisnih zapisa sada ugradjuje povezane fotografije nakon kompresije slike za manju velicinu dokumenta.

Dodan je regresijski test koji provjerava da generirani DOCX sadrzi embedded media datoteke.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

backend/modules/fleet/tests/test_work_order_images_endpoint.py

@@ -7,9 +7,11 @@ from rest_framework.test import APIClient
 import uuid
 from io import BytesIO
 from datetime import timedelta
+import zipfile
 from PIL import Image
 
 from modules.fleet.models import Vehicle, WorkOrder, WorkOrderInvoice, VehicleServiceRecord, VehicleServicePhoto, GeneratedWorkOrderPdf
+from modules.task_management.models import Task
 
 
 def create_test_image(filename='test.jpg', size=(40, 40), color='red'):
@@ -55,9 +57,16 @@ class WorkOrderImagesEndpointTests(TestCase):
             creator=self.user,
             purpose='kontrola',
         )
+        self.task = Task.objects.create(
+            title='Test servisni zadatak',
+            assigned_to=self.user,
+            vehicle=self.vehicle,
+            work_order=self.work_order,
+        )
 
         self.service_record = VehicleServiceRecord.objects.create(
             vehicle=self.vehicle,
+            task=self.task,
             performed_by=self.user,
             description='Servisni zapis za test izolacije fotografija.',
             service_title='Test servis',
@@ -240,3 +249,22 @@ class WorkOrderImagesEndpointTests(TestCase):
         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,
+            image=create_test_image('service-record-docx.jpg', size=(320, 200), color='blue'),
+            description='DOCX photo',
+            uploaded_by=self.user,
+        )
+
+        response = self.client.get(f"/api/fleet/work-orders/{self.work_order.pk}/service-records-docx/")
+        self.assertEqual(response.status_code, 200, response.content)
+        self.assertEqual(
+            response['Content-Type'],
+            'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+        )
+
+        archive = zipfile.ZipFile(BytesIO(response.content))
+        media_files = [name for name in archive.namelist() if name.startswith('word/media/')]
+        self.assertTrue(media_files, archive.namelist())

backend/modules/fleet/views.py

@@ -236,6 +236,31 @@ def _compress_image_for_pdf(image_field, max_width=1280, quality=75):
             pass
 
 
+def _compress_image_for_docx(image_field, max_width=1600, quality=80):
+    """
+    Pripremi sliku za python-docx kao JPEG stream razumne veličine.
+    """
+    try:
+        image_field.open('rb')
+        with Image.open(image_field) as src:
+            img = src.convert('RGB')
+            if img.width > max_width:
+                ratio = max_width / float(img.width)
+                new_h = max(1, int(img.height * ratio))
+                img = img.resize((max_width, new_h), Image.LANCZOS)
+            buf = BytesIO()
+            img.save(buf, format='JPEG', quality=quality, optimize=True)
+            buf.seek(0)
+        return buf
+    except Exception:
+        return None
+    finally:
+        try:
+            image_field.close()
+        except Exception:
+            pass
+
+
 def _get_cached_pdf(work_order, pdf_type):
     now = timezone.now()
     expected_filename = _pdf_filename(work_order, pdf_type)
@@ -1759,6 +1784,8 @@ def _build_work_order_docx_bytes(work_order):
 
 
 def _build_work_order_service_records_docx_bytes(work_order):
+    from docx.shared import Cm
+
     doc = _create_docx_document(SERVICE_REPORT_DOCX_TEMPLATE_NAME)
     vehicle = work_order.vehicle
     client_name = getattr(getattr(vehicle, 'client', None), 'name', None) or '-'
@@ -1805,6 +1832,7 @@ def _build_work_order_service_records_docx_bytes(work_order):
             vehicle_id=work_order.vehicle_id,
         )
         .select_related('performed_by', 'task')
+        .prefetch_related('photos')
         .order_by('service_date', 'created_at')
     )
     records_by_task = {
@@ -1915,6 +1943,20 @@ def _build_work_order_service_records_docx_bytes(work_order):
             doc.add_paragraph(f"Korišteni dijelovi: {record.parts or '-'}")
             doc.add_paragraph(f"Trošak: {record.cost or '-'} EUR")
             doc.add_paragraph(f"Kilometraža: {record.mileage if record.mileage is not None else '-'}")
+            photos = [photo for photo in record.photos.filter(is_active=True).all() if photo.image]
+            if photos:
+                doc.add_paragraph('Fotografije:')
+                for photo in photos:
+                    image_stream = _compress_image_for_docx(photo.image)
+                    if image_stream is None:
+                        continue
+                    try:
+                        doc.add_picture(image_stream, width=Cm(16))
+                    except Exception:
+                        continue
+                    photo_caption = str(photo.description or '').strip()
+                    if photo_caption:
+                        doc.add_paragraph(photo_caption)
             doc.add_paragraph('')
     if not has_records:
         doc.add_paragraph('Nema povezanih servisnih zapisa za ovaj putni nalog.')