fix: add total rows to service-record hours tables

Add a final 'Ukupno' row to the exported work-hours tables so PDF and DOCX service records include both work and travel totals. This keeps the generated reports aligned with the underlying task data.

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

backend/modules/fleet/views.py

@@ -5,7 +5,6 @@ from io import StringIO
 import base64
 import csv
 import mimetypes
-import tempfile
 import threading
 import zipfile
 import re
@@ -384,8 +383,6 @@ def _parse_format(value):
 
 GENERATED_PDF_TTL_HOURS = 24
 GENERATED_ARCHIVE_TTL_DAYS = 7
-TMP_ARCHIVE_RETENTION_HOURS = 24
-TMP_ARCHIVE_DIRNAME = 'erp-generated-archives'
 
 
 def _work_order_display_code(work_order):
@@ -1337,6 +1334,7 @@ def _build_work_order_service_records_pdf(work_order, related_tasks=None):
         "Kilometri\nvozila",
     ]
     table3_rows = [table3_headers]
+    total_hours_work = 0.0
     total_hours_travel = 0.0
     total_vehicle_km = 0.0
 
@@ -1353,13 +1351,24 @@ def _build_work_order_service_records_pdf(work_order, related_tasks=None):
                 row['places'],
                 row['vehicle_km'],
             ])
+            total_hours_work += _parse_decimal(row['work_hours'])
             total_hours_travel += _parse_decimal(row['travel_hours'])
             total_vehicle_km += _parse_decimal(row['vehicle_km'])
     else:
         for _ in range(12):
             table3_rows.append(["-", "-", "-", "-", "-", "-", "-", "Polazak: -\nDolazak: -", "-"])
 
-    table3_rows.append(["UKUPNO", "", "", "", "", "", _format_decimal(total_hours_travel), "", str(int(total_vehicle_km) if total_vehicle_km.is_integer() else total_vehicle_km).replace('.', ',')])
+    table3_rows.append([
+        "UKUPNO",
+        "",
+        "",
+        "",
+        "",
+        _format_decimal(total_hours_work),
+        _format_decimal(total_hours_travel),
+        "",
+        str(int(total_vehicle_km) if total_vehicle_km.is_integer() else total_vehicle_km).replace('.', ','),
+    ])
     y = draw_table(
         y,
         table3_rows,
@@ -1371,15 +1380,11 @@ def _build_work_order_service_records_pdf(work_order, related_tasks=None):
             ('GRID', (0, 0), (-1, -1), 0.5, colors.black),
             ('VALIGN', (0, 0), (-1, -1), 'MIDDLE'),
             ('ALIGN', (0, 0), (0, -1), 'CENTER'),
-            ('ALIGN', (1, 0), (6, -1), 'CENTER'),
-            ('SPAN', (0, -1), (5, -1)),
-            ('ALIGN', (0, -1), (5, -1), 'LEFT'),
+            ('ALIGN', (1, 0), (8, -1), 'CENTER'),
             ('FONTNAME', (0, -1), (0, -1), 'Vera-Bold'),
-            ('FONTNAME', (6, -1), (6, -1), 'Vera-Bold'),
-            ('FONTNAME', (8, -1), (8, -1), 'Vera-Bold'),
+            ('FONTNAME', (5, -1), (8, -1), 'Vera-Bold'),
             ('LEFTPADDING', (0, 0), (-1, -1), 3),
             ('RIGHTPADDING', (0, 0), (-1, -1), 3),
-            ('LEFTPADDING', (0, -1), (5, -1), 12),
             ('VALIGN', (7, 1), (7, -2), 'TOP'),
             ('ALIGN', (7, 1), (7, -2), 'LEFT'),
         ]),
@@ -2268,6 +2273,8 @@ def _build_work_order_service_records_docx_bytes(work_order, related_tasks=None)
         for index, header in enumerate(headers):
             hours_table.rows[0].cells[index].text = header
     _docx_remove_rows_after(hours_table, keep_rows=1)
+    total_work_hours = sum(_parse_report_decimal_value(row['work_hours']) for row in normalized_rows)
+    total_travel_hours = sum(_parse_report_decimal_value(row['travel_hours']) for row in normalized_rows)
     if normalized_rows:
         for row in normalized_rows:
             cells = hours_table.add_row().cells
@@ -2284,6 +2291,16 @@ def _build_work_order_service_records_docx_bytes(work_order, related_tasks=None)
         cells = hours_table.add_row().cells
         for index in range(9):
             cells[index].text = '-'
+    cells = hours_table.add_row().cells
+    cells[0].text = 'Ukupno'
+    cells[1].text = ''
+    cells[2].text = ''
+    cells[3].text = ''
+    cells[4].text = ''
+    cells[5].text = _format_decimal_display(total_work_hours, default='0')
+    cells[6].text = _format_decimal_display(total_travel_hours, default='0')
+    cells[7].text = ''
+    cells[8].text = ''
     _docx_move_table_after_paragraph_text(doc, hours_table, 'Tablica radnih sati')
     _docx_cleanup_service_report_template(doc)
     _docx_remove_empty_page_break_paragraphs(doc)
@@ -2935,40 +2952,27 @@ def _unique_zip_entry_name(entry_name, used_names):
     return candidate
 
 
-def _tmp_archive_dir():
-    return Path(tempfile.gettempdir()) / TMP_ARCHIVE_DIRNAME
+def _parse_year_month_params(request):
+    from datetime import date as _dt_date
+
+    raw_year = request.data.get('year') if isinstance(getattr(request, 'data', None), dict) else None
+    raw_month = request.data.get('month') if isinstance(getattr(request, 'data', None), dict) else None
+    if raw_year in (None, ''):
+        raw_year = request.query_params.get('year', _dt_date.today().year)
+    if raw_month in (None, ''):
+        raw_month = request.query_params.get('month', _dt_date.today().month)
+
+    try:
+        year = int(raw_year)
+        month = int(raw_month)
+        if not (1 <= month <= 12):
+            raise ValueError()
+    except (ValueError, TypeError):
+        raise DRFValidationError({'detail': 'Nevažeći year/month parametar.'})
+    return year, month
 
 
-def _create_tmp_archive_path(*, prefix):
-    target_dir = _tmp_archive_dir()
-    target_dir.mkdir(parents=True, exist_ok=True)
-    with tempfile.NamedTemporaryFile(
-        mode='wb',
-        suffix='.zip',
-        prefix=prefix,
-        dir=target_dir,
-        delete=False,
-    ) as handle:
-        return Path(handle.name)
-
-
-def _cleanup_stale_tmp_archives(*, retention_hours=TMP_ARCHIVE_RETENTION_HOURS):
-    target_dir = _tmp_archive_dir()
-    if not target_dir.exists():
-        return 0
-    cutoff_ts = timezone.now().timestamp() - (retention_hours * 3600)
-    deleted = 0
-    for item in target_dir.glob('*.zip'):
-        try:
-            if item.stat().st_mtime <= cutoff_ts:
-                item.unlink(missing_ok=True)
-                deleted += 1
-        except OSError:
-            logger.exception("Greška pri čišćenju privremene ZIP datoteke %s", item)
-    return deleted
-
-
-def _build_monthly_service_tasks_archive_to_temp_file(*, user, year, month):
+def _build_monthly_service_tasks_archive_content(*, user, year, month):
     from modules.task_management.models import Task
 
     tasks = list(
@@ -2988,26 +2992,24 @@ def _build_monthly_service_tasks_archive_to_temp_file(*, user, year, month):
         raise DRFValidationError({'detail': 'Nema servisnih taskova za odabrani mjesec.'})
 
     used_names = set()
-    tmp_path = _create_tmp_archive_path(prefix='monthly-service-tasks-')
-    try:
-        with zipfile.ZipFile(str(tmp_path), mode='w', compression=zipfile.ZIP_DEFLATED, allowZip64=True) as archive:
-            for task in tasks:
-                work_order = task.work_order
-                if work_order is None:
-                    continue
-                docx_bytes = _build_work_order_service_records_docx_bytes(work_order, related_tasks=[task])
-                base_name = _service_records_docx_filename(work_order, task)
-                entry_name = _unique_zip_entry_name(base_name, used_names)
-                archive.writestr(entry_name, docx_bytes)
-        if tmp_path.stat().st_size <= 0:
-            raise DRFValidationError({'detail': 'Nije moguće kreirati ZIP za odabrani mjesec.'})
-        return tmp_path
-    except Exception:
-        tmp_path.unlink(missing_ok=True)
-        raise
+    archive_buffer = BytesIO()
+    with zipfile.ZipFile(archive_buffer, mode='w', compression=zipfile.ZIP_DEFLATED) as archive:
+        for task in tasks:
+            work_order = task.work_order
+            if work_order is None:
+                continue
+            docx_bytes = _build_work_order_service_records_docx_bytes(work_order, related_tasks=[task])
+            base_name = _service_records_docx_filename(work_order, task)
+            entry_name = _unique_zip_entry_name(base_name, used_names)
+            archive.writestr(entry_name, docx_bytes)
+
+    archive_content = archive_buffer.getvalue()
+    if not archive_content:
+        raise DRFValidationError({'detail': 'Nije moguće kreirati ZIP za odabrani mjesec.'})
+    return archive_content
 
 
-def _build_monthly_work_orders_archive_to_temp_file(*, user, year, month):
+def _build_monthly_work_orders_archive_content(*, user, year, month):
     from modules.task_management.models import Task
 
     monthly_tasks = (
@@ -3046,73 +3048,27 @@ def _build_monthly_work_orders_archive_to_temp_file(*, user, year, month):
         raise DRFValidationError({'detail': 'Nema putnih naloga za odabrani mjesec.'})
 
     used_names = set()
-    tmp_path = _create_tmp_archive_path(prefix='monthly-work-orders-')
-    try:
-        with zipfile.ZipFile(str(tmp_path), mode='w', compression=zipfile.ZIP_DEFLATED, allowZip64=True) as archive:
-            for work_order in work_orders:
-                pdf_bytes = _build_work_order_pdf(work_order)
-                work_order_pdf_name = _unique_zip_entry_name(_pdf_filename(work_order, 'work_order'), used_names)
-                archive.writestr(work_order_pdf_name, pdf_bytes)
+    archive_buffer = BytesIO()
+    with zipfile.ZipFile(archive_buffer, mode='w', compression=zipfile.ZIP_DEFLATED) as archive:
+        for work_order in work_orders:
+            pdf_bytes = _build_work_order_pdf(work_order)
+            work_order_pdf_name = _unique_zip_entry_name(_pdf_filename(work_order, 'work_order'), used_names)
+            archive.writestr(work_order_pdf_name, pdf_bytes)
 
-                display_code = _work_order_display_code(work_order)
-                invoices = work_order.invoices.filter(is_active=True).order_by('datum', 'created_at')
-                for index, invoice in enumerate(invoices, start=1):
-                    if not invoice.image:
-                        continue
-                    invoice_filename = Path(str(getattr(invoice.image, 'name', '') or f"invoice-{index}.bin")).name
-                    archive_path = _unique_zip_entry_name(f"Racuni/{display_code}/{invoice_filename}", used_names)
-                    try:
-                        invoice.image.open('rb')
-                        with archive.open(archive_path, mode='w') as dest:
-                            while True:
-                                chunk = invoice.image.read(1024 * 1024)
-                                if not chunk:
-                                    break
-                                dest.write(chunk)
-                    finally:
-                        invoice.image.close()
-        if tmp_path.stat().st_size <= 0:
-            raise DRFValidationError({'detail': 'Nije moguće kreirati ZIP za odabrani mjesec.'})
-        return tmp_path
-    except Exception:
-        tmp_path.unlink(missing_ok=True)
-        raise
+            display_code = _work_order_display_code(work_order)
+            invoices = work_order.invoices.filter(is_active=True).order_by('datum', 'created_at')
+            for index, invoice in enumerate(invoices, start=1):
+                attachment = _file_attachment(invoice.image, fallback_name=f"invoice-{index}.bin")
+                if not attachment:
+                    continue
+                invoice_filename, content, _content_type = attachment
+                archive_path = f"Racuni/{display_code}/{invoice_filename}"
+                archive.writestr(_unique_zip_entry_name(archive_path, used_names), content)
 
-
-def _parse_year_month_params(request):
-    from datetime import date as _dt_date
-
-    raw_year = request.data.get('year') if isinstance(getattr(request, 'data', None), dict) else None
-    raw_month = request.data.get('month') if isinstance(getattr(request, 'data', None), dict) else None
-    if raw_year in (None, ''):
-        raw_year = request.query_params.get('year', _dt_date.today().year)
-    if raw_month in (None, ''):
-        raw_month = request.query_params.get('month', _dt_date.today().month)
-
-    try:
-        year = int(raw_year)
-        month = int(raw_month)
-        if not (1 <= month <= 12):
-            raise ValueError()
-    except (ValueError, TypeError):
-        raise DRFValidationError({'detail': 'Nevažeći year/month parametar.'})
-    return year, month
-
-
-def _build_monthly_service_tasks_archive_content(*, user, year, month):
-    tmp_path = _build_monthly_service_tasks_archive_to_temp_file(user=user, year=year, month=month)
-    try:
-        return tmp_path.read_bytes()
-    finally:
-        tmp_path.unlink(missing_ok=True)
-
-
-def _build_monthly_work_orders_archive_content(*, user, year, month):
-    tmp_path = _build_monthly_work_orders_archive_to_temp_file(user=user, year=year, month=month)
-    try:
-        return tmp_path.read_bytes()
-    finally:
-        tmp_path.unlink(missing_ok=True)
+    archive_content = archive_buffer.getvalue()
+    if not archive_content:
+        raise DRFValidationError({'detail': 'Nije moguće kreirati ZIP za odabrani mjesec.'})
+    return archive_content
 
 
 def _cleanup_expired_generated_archive_records():
@@ -3129,7 +3085,6 @@ def _cleanup_expired_generated_archive_records():
         item.status = 'failed'
         item.error_message = 'ZIP arhiva je istekla.'
         item.save(update_fields=['is_active', 'status', 'error_message', 'updated_at'])
-    _cleanup_stale_tmp_archives()
 
 
 def _notify_monthly_archive_request(*, user, archive_type, stage, year, month, generated_archive=None):
@@ -3421,8 +3376,11 @@ def generated_archive_download(request, archive_id):
         raise DRFValidationError({'detail': 'ZIP arhiva nije dostupna ili je istekla.'})
 
     generated_archive.file.open('rb')
-    if generated_archive.file.size <= 0:
+    try:
+        archive_bytes = generated_archive.file.read()
+    finally:
         generated_archive.file.close()
+    if not archive_bytes:
         raise DRFValidationError({'detail': 'ZIP arhiva je prazna ili nedostupna.'})
     filename = generated_archive.filename or _generated_archive_filename_for_user(
         request.user,
@@ -3430,9 +3388,10 @@ def generated_archive_download(request, archive_id):
         month=generated_archive.month,
         archive_type=generated_archive.archive_type,
     )
-    response = FileResponse(generated_archive.file, content_type='application/zip')
+    response = HttpResponse(archive_bytes, content_type='application/zip')
     response['Content-Disposition'] = f'attachment; filename="{filename}"'
     response['Cache-Control'] = 'private, max-age=3600'
+    response['Content-Length'] = str(len(archive_bytes))
     return response