submission_deadline fix

assignment_service.py

@@ -19,10 +19,12 @@ class AssignmentService:
                 return assignment_id
             
     def create_assignment_metadata(self, assignment_type, grade, topic, introduction, description, attach_materials, submission_deadline):
-        # submission_deadline is Unix timestamp (seconds)
-        # convert to ISO format with timezone, example: 2024-06-01T00:00:00+08:00
         taipei_tz = pytz.timezone('Asia/Taipei')
-        submission_deadline = datetime.fromtimestamp(submission_deadline, tz=taipei_tz).isoformat()
+        
+        if submission_deadline:
+            submission_deadline = datetime.fromtimestamp(submission_deadline, tz=taipei_tz).isoformat()
+        else:
+            submission_deadline = None
         
         metadata = {
             "assignment_type": assignment_type,
@@ -30,7 +32,7 @@ class AssignmentService:
             "topic": topic,
             "introduction": introduction,
             "description": description,
-            "attach_materials": attach_materials,
+            "attach_materials": attach_materials if attach_materials else None,
             "submission_deadline": submission_deadline
         }
         
@@ -146,7 +148,7 @@ class AssignmentService:
             if not self.gcs_service.delete_file(self.bucket_name, file_name):
                 raise Exception("Failed to delete assignment file")
 
-            # 從用戶的作業列表中刪除
+            # 從用戶的作業列表中刪���
             user_assignments = self.get_user_assignments(user_data)
             if assignment_id in user_assignments:
                 del user_assignments[assignment_id]

assignment_ui.py

@@ -24,7 +24,7 @@ def create_assignment_ui(user_data, assignment_service, submission_service):
                     with gr.Row():
                         gr.Markdown("### 繳交規範")
                     with gr.Row():
-                        assignment_submission_deadline = gr.DateTime(label="提交截止日期")
+                        assignment_submission_deadline = gr.DateTime(label="提交截止日期", value=None)
                         assignment_attach_materials = gr.Textbox(label="附件參考", placeholder='[{"type": "video", "url": "link1", "description": "描述"}]', visible=False)
                     with gr.Row():
                         assignment_create_button = gr.Button("建立作業")
@@ -131,7 +131,7 @@ def create_assignment_ui(user_data, assignment_service, submission_service):
                 if submission_deadline is not None:
                     try:
                         if isinstance(submission_deadline, (int, float)):
-                            # 假設這是一個 Unix 時間戳（秒）
+                            # 假設這是個 Unix 時間戳（秒）
                             submission_datetime = datetime.fromtimestamp(submission_deadline)
                         elif isinstance(submission_deadline, str):
                             # 嘗試解析 ISO 格式的字串