add base template for manual fill

backend/src/contracts/contracts.py

@@ -105,6 +105,46 @@ async def create_contract(
         }
     )
 
+@router.get('/{form_id}/base')
+async def get_base_contract_template(
+    form_id: int,
+    session: Session = Depends(get_session),
+):
+    form = form_service.get_one(session, form_id)
+    recurrents = [pr for pr in form.productor.products if pr.type == models.ProductType.RECCURENT]
+    occasionals = [{
+        'shipment': sh, 
+        'price': None, 
+        'products': [{'product': pr, 'quantity': None} for pr in sh.products]
+    } for sh in form.shipments]
+    empty_contract = models.Contract(
+        firstname="",
+        form=form,
+        lastname="",
+        email="",
+        phone="",
+        payment_method="cheque"
+    )
+    cheques = [{"name": None, "value": None}, {"name": None, "value": None}, {"name": None, "value": None}]
+    try:
+        pdf_bytes = generate_html_contract(
+            empty_contract,
+            cheques,
+            occasionals,
+            recurrents,
+        )
+        pdf_file = io.BytesIO(pdf_bytes)
+        contract_id = f'{empty_contract.form.productor.type}_{empty_contract.form.season}'
+    except Exception:
+        raise HTTPException(status_code=400, detail=messages.pdferror)
+    return StreamingResponse(
+        pdf_file,
+        media_type='application/pdf',
+        headers={
+            'Content-Disposition': f'attachment; filename=contract_{contract_id}.pdf'
+        }
+    )
+
 @router.get('', response_model=list[models.ContractPublic])
 def get_contracts(
     forms: list[str] = Query([]),