fix: throttle request issue per video,audio as indicated requirements in units and lessons

Signed-off-by: rgrgogu <obsequio.rus@gmail.com>

src/contexts/ClientLibraryContext.jsx

@@ -160,6 +160,40 @@ export function ClientLibraryProvider({ children }) {
     }
   }, []);
 
+  // Reports watch/listen playback progress for watch_percent / watch_video / listen_audio
+  // completion requirements — safe to call unconditionally for any standalone lesson (the
+  // backend no-ops when none of those types is configured on it). Fires frequently while
+  // playback is running (throttled ~3s by the block itself), so failures are swallowed
+  // rather than toasted — the next tick, or onEnded's final 100% call, catches up.
+  const upsertWatchProgress = useCallback(async (lessonUuid, unitUuid, percent, meta = {}) => {
+    try {
+      const { data } = await api.post(`/client/lessons/${lessonUuid}/watch-progress`, {
+        percent,
+        ...(unitUuid ? { unit_uuid: unitUuid } : {}),
+        ...(meta.blockId   ? { block_id: meta.blockId }     : {}),
+        ...(meta.blockType ? { block_type: meta.blockType } : {}),
+      });
+      const result = data.data ?? null;
+      const cascadeLesson = result?.cascade?.lesson;
+      const cascadeUnit   = result?.cascade?.unit;
+
+      setUnitDetail((prev) => {
+        if (!prev || !cascadeLesson) return prev;
+        const nextLessons = prev.lessons.map((l) =>
+          l.lesson_id === cascadeLesson.lesson_id
+            ? { ...l, status: cascadeLesson.status }
+            : l
+        );
+        const is_completed = cascadeUnit ? cascadeUnit.status === "completed" : prev.is_completed;
+        return { ...prev, lessons: nextLessons, is_completed };
+      });
+
+      return result;
+    } catch {
+      return null;
+    }
+  }, []);
+
   // ─── Resets ─────────────────────────────────────────────────────────────
 
   const resetUnitDetail = useCallback(() => {
@@ -187,6 +221,7 @@ export function ClientLibraryProvider({ children }) {
     submitUnitQuiz,
     saveUnitQuizDraft,
     upsertLessonProgress,
+    upsertWatchProgress,
 
     resetUnitDetail,
     resetLesson,