implement showing only videos that are either unassigned or assigned to a current user

Functions/caption_editor_functions.py

@@ -26,9 +26,10 @@ def save_captions_to_db(df, video_id, user, video_pointer):
         df_json = data.to_dict(orient="index")
         default_app.database().child("video_captions").child(video_id).child("captions").set(df_json)
 
-        # Auto-assign: write the current user to the video's assigned_to field
-        # video_pointer is passed directly by the caller -- no resolution needed
-        default_app.database().child("videos").child(str(video_pointer)).child("assigned_to").set(user)
+        # Auto-assign: only if the video isn't already assigned to someone
+        existing_assignment = default_app.database().child("videos").child(str(video_pointer)).child("assigned_to").get().val()
+        if not existing_assignment:
+            default_app.database().child("videos").child(str(video_pointer)).child("assigned_to").set(user)
         return get_string("save_successful")
     except Exception as e:
         return f"{get_string('save_failed')} {str(e)}"

Functions/video_player_functions.py

@@ -28,12 +28,15 @@ def get_video_embed_by_id(video_id):
 
 
 # ADC-IMPLEMENTS: <gc-feature-assignment-01>
-def get_video_link_by_pointer(pointer, show_incomplete_only):
-    """Get video link with optional incomplete-only filtering.
+def get_video_link_by_pointer(pointer, show_incomplete_only, current_user=""):
+    """Get video link, skipping completed videos and videos assigned to other users.
 
     Args:
         pointer: Video index in the database
         show_incomplete_only: If True, skip videos marked as complete
+        current_user: Username of the current user. Videos assigned to
+            other users are skipped. Unassigned videos and videos assigned
+            to current_user are returned.
 
     Returns:
         Video URL string, or None if the video is filtered out
@@ -43,6 +46,9 @@ def get_video_link_by_pointer(pointer, show_incomplete_only):
         return None
     if show_incomplete_only and video.get("complete", False):
         return None
+    assigned_to = video.get("assigned_to")
+    if assigned_to and assigned_to != current_user:
+        return None
     return video["url"]
 
 

app.py

@@ -158,13 +158,13 @@ def get_next_components(show_incomplete_only):
     global next_video_pointer
     next_video_link = placeholder_link
     if next_video_pointer != -1:
-        next_video_link = get_video_link_by_pointer(next_video_pointer, show_incomplete_only)
+        next_video_link = get_video_link_by_pointer(next_video_pointer, show_incomplete_only, user)
         next_video_pointer = (next_video_pointer + 1) % n_videos
 
         for _ in range(n_videos + 1):
             if next_video_link is not None:
                 break
-            next_video_link = get_video_link_by_pointer(next_video_pointer, show_incomplete_only)
+            next_video_link = get_video_link_by_pointer(next_video_pointer, show_incomplete_only, user)
             next_video_pointer = (next_video_pointer + 1) % n_videos
         if next_video_link is None:
             next_video_link = placeholder_link