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

Signed-off-by: Kenneth Obsequio <k80308392@gmail.com>

controllers/client/courses.controller.js

@@ -1350,6 +1350,13 @@ exports.getLessonsByUnitUuid = async (req, res) => {
     const unitEvaluation = await evaluateEntity({ entityType: "unit", entityId: unit.unit_id, userId, courseId: null });
     const is_completed = unitEvaluation.status === "completed";
 
+    // Admin-configured completion requirement for the unit itself (pass_quiz /
+    // manual_complete / read_all_content) — null when nothing's configured.
+    const unitRequirement = await CompletionRequirement.findOne({
+      where: { entity_type: "unit", entity_id: unit.unit_id },
+      attributes: ["type", "min_percent", "button_label"],
+    });
+
     return R.success(res, "Unit lessons retrieved.", {
       unit_id:          unit.unit_id,
       uuid:             unit.uuid,
@@ -1360,6 +1367,9 @@ exports.getLessonsByUnitUuid = async (req, res) => {
       courses:          plain.courses ?? [],
       quiz,
       is_completed,
+      completion: unitRequirement
+        ? { type: unitRequirement.type, min_percent: unitRequirement.min_percent, button_label: unitRequirement.button_label }
+        : null,
       lessons,
     });
   } catch (err) {
@@ -1421,6 +1431,15 @@ exports.getLessonByUuid = async (req, res) => {
       attributes: ["status", "completed_at"],
     });
 
+    // Admin-configured completion requirement (if any) — lets the standalone reader
+    // show what a learner must do to complete this lesson, same info the course-scoped
+    // reader gets via getCourse's per-lesson `completion` field. null when nothing's
+    // configured (default read_all_content behavior — nothing to display).
+    const requirement = await CompletionRequirement.findOne({
+      where: { entity_type: "lesson", entity_id: lesson.lesson_id },
+      attributes: ["type", "min_percent", "button_label"],
+    });
+
     const plain = lesson.toJSON();
     const firstUnit = plain.units?.[0] ?? null;
     const data = {
@@ -1433,6 +1452,7 @@ exports.getLessonByUuid = async (req, res) => {
       objectives:  plain.objectives ?? [],
       status:       progress?.status ?? "not_started",
       completed_at: progress?.completed_at ?? null,
+      completion:  requirement ? { type: requirement.type, min_percent: requirement.min_percent, button_label: requirement.button_label } : null,
       unit:        firstUnit ? { unit_id: firstUnit.unit_id, uuid: firstUnit.uuid, title: firstUnit.title, duration_seconds: firstUnit.duration_seconds, course: firstUnit.courses?.[0] ?? null } : null, // back-compat singular field
       units:       plain.units ?? [],
     };