Not defaulting to invoice.xml

main.py

@@ -23,11 +23,11 @@
 
 
 @app.post("/upload")
-async def upload_files(pdf_file: UploadFile = File(...), xml_file: UploadFile = File(...)):
+async def upload_files(pdf_file: UploadFile = File(...), xml_file: UploadFile = File(...),xml_file_name=None):
     session_id = secrets.token_hex(8)
     pdf_file_path = await save_temp_file(await pdf_file.read(), '.pdf', session_id)
     xml_file_path = await save_temp_file(await xml_file.read(), '.xml', session_id)
-    ps_file = await create_post_script_file(xml_file_path,  session_id)
+    ps_file = await create_post_script_file(xml_file_path,  session_id,xml_file_name=xml_file_name)
     result_file_path = os.path.join(tempfile.mkdtemp(), session_id) + '.pdf'
     command = f"gs -sDEVICE=pdfwrite -dNOSAFER -dPDFA=3 -sColorConversionStrategy=RGB -dPDFACompatibilityPolicy=2 -o {result_file_path} {pdf_file_path} {ps_file} -dDEBUG"
     subprocess.run(command, shell=True)

utils.py

@@ -28,8 +28,8 @@ async def save_temp_file(file_data: bytes, file_extension: str, folder: str) ->
     return temp_file_path
 
 
-async def create_post_script_file(xml_file_path: str, session_id):
-     content = ps_content_template.format(xml_path=xml_file_path, xml_filename='invoice.xml', gs_version=get_gs_version())
+async def create_post_script_file(xml_file_path: str, session_id,xml_file_name=None):
+     content = ps_content_template.format(xml_path=xml_file_path, xml_filename=xml_file_name or 'invoice.xml', gs_version=get_gs_version())
      return await save_temp_file(content.encode('utf-8'), '.ps', session_id)
 
 def get_gs_version():