def get_all_assignments(self):

assignment_service.py

@@ -100,7 +100,7 @@ class AssignmentService:
             assignment_data = json.loads(assignment_json)
         except Exception as e:
             print(f"Error: {e}")
-            return "無效的作業 ID"
+            return {}  # 返回空字典而不是字串
         return assignment_data
     
     def get_assignment_submissions(self, assignment_id):
@@ -116,14 +116,37 @@ class AssignmentService:
             print(f"Error: {e}")
             user_assignments = {}
         return user_assignments
+    
+    def get_all_assignments(self):
+        try:
+            # 列出所有 'assignments/' 開頭的檔案
+            objects = self.gcs_service.list_files(self.bucket_name, prefix="assignments/")
+            assignments = {}
+            for obj in objects:
+                if obj.endswith(".json"):
+                    assignment_id = obj.split("/")[-1].replace(".json", "")
+                    assignment_json = self.gcs_service.download_as_string(self.bucket_name, obj)
+                    assignments[assignment_id] = json.loads(assignment_json)
+        except Exception as e:
+            print(f"Error: {e}")
+            assignments = {}
+        return assignments
 
     def update_assignment_list(self, assigner_data):
         choices = []
-        user_assignments = self.get_user_assignments(assigner_data)
+        if assigner_data == "admin":
+            user_assignments = self.get_all_assignments()
+        else:
+            user_assignments = self.get_user_assignments(assigner_data)
+
+
         for assignment_id, assignment_info in user_assignments.items():
             assignment_data = self.get_assignment(assignment_id)
             metadata = assignment_data.get("metadata", {})
-            topic = metadata.get("topic", "未命名作業")
+            if metadata:
+                topic = metadata.get("topic", "未命名作業")
+            else:
+                topic = "未命名作業"
             assignment_type = assignment_data.get("assignment_type", "未知類型")
             timestamp = assignment_data.get("timestamp", "未知日期")
             
@@ -148,7 +171,7 @@ 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���
+            # 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

@@ -140,9 +140,15 @@ def create_assignment_ui(user_data, assignment_service, submission_service, dash
                 return assignment_list, assignment_data, assignment_data_html, submissions_list_json, submissions_list_radio, submission_data_json, submission_data_html
 
             def update_assignment_data_html(assignment_data):
-                # 處理 submission_deadline
-                submission_deadline = assignment_data['metadata'].get('submission_deadline')
-                formatted_deadline = "未設置截止日期"
+                # check metadata in assignment_data
+                metadata = assignment_data.get('metadata', {})
+                if metadata:
+                    # 處理 submission_deadline
+                    submission_deadline = assignment_data['metadata'].get('submission_deadline')
+                    formatted_deadline = "未設置截止日期"
+                else:
+                    submission_deadline = None
+                    formatted_deadline = "未設置截止日期"
                 
                 if submission_deadline is not None:
                     try: