last tickets

src/utils/likes.js

@@ -14,7 +14,19 @@ export const getProjectLikes = (project, target = LIKE_TARGET.SONG) => {
   const path = target === LIKE_TARGET.PLAYBACK ? "playback" : "song";
   const likes = project?.likes;
   const list = likes ? likes[path] : null;
-  return Array.isArray(list) ? list : [];
+  const normalized = Array.isArray(list) ? list : [];
+  const legacy = Array.isArray(project?.likedBy) ? project.likedBy : [];
+
+  if (target !== LIKE_TARGET.SONG || legacy.length === 0) {
+    return normalized;
+  }
+
+  const merged = new Set(normalized);
+  legacy.forEach((uid) => {
+    if (uid) merged.add(uid);
+  });
+
+  return Array.from(merged);
 };
 
 export const isProjectLikedByUser = (
@@ -35,11 +47,16 @@ export const toggleProjectLike = async ({
   if (!projectId) return;
   if (!ensureAuthenticated(currentUID)) return;
   const fieldPath = getLikeFieldPath(target);
+  const likeOperation = next ? arrayUnion(currentUID) : arrayRemove(currentUID);
   await projectsRef.doc(projectId).set(
     {
-      [fieldPath]: next
-        ? arrayUnion(currentUID)
-        : arrayRemove(currentUID),
+      [fieldPath]: likeOperation,
+      ...(target === LIKE_TARGET.SONG
+        ? {
+            // Keep legacy likedBy in sync for clients still reading this field
+            likedBy: next ? arrayUnion(currentUID) : arrayRemove(currentUID),
+          }
+        : {}),
     },
     { merge: true }
   );