feat: Implement quiz attempt tracking and limits with persistence, and add background transcription for lessons.

services/cms-service/src/handlers.rs

@@ -594,6 +594,14 @@ pub async fn process_transcription(
     )
     .await;
 
+    // 4. Spawn background task
+    let pool_clone = pool.clone();
+    tokio::spawn(async move {
+        if let Err(e) = run_transcription_task(pool_clone, id).await {
+            tracing::error!("Transcription task failed for lesson {}: {}", id, e);
+        }
+    });
+
     Ok(Json(updated_lesson))
 }
 
@@ -1842,7 +1850,7 @@ pub async fn delete_module(
         return Err(StatusCode::NOT_FOUND);
     }
 
-    Ok(StatusCode::OK)
+    Ok(StatusCode::NO_CONTENT)
 }
 
 pub async fn delete_lesson(
@@ -1897,7 +1905,7 @@ pub async fn delete_lesson(
         return Err(StatusCode::NOT_FOUND);
     }
 
-    Ok(StatusCode::OK)
+    Ok(StatusCode::NO_CONTENT)
 }
 
 // User Management

web/experience/src/app/courses/[id]/lessons/[lessonId]/page.tsx

@@ -189,7 +189,40 @@ export default function LessonPlayerPage({ params }: { params: { id: string, les
                                                 />
                                             )}
                                             {block.type === 'quiz' && (
-                                                <QuizPlayer id={block.id} title={block.title} quizData={block.quiz_data || { questions: [] }} allowRetry={lesson.allow_retry} />
+                                                <QuizPlayer
+                                                    id={block.id}
+                                                    title={block.title}
+                                                    quizData={block.quiz_data || { questions: [] }}
+                                                    allowRetry={lesson.allow_retry}
+                                                    maxAttempts={lesson.max_attempts || undefined}
+                                                    initialAttempts={
+                                                        userGrade?.metadata?.block_attempts
+                                                            ? (userGrade.metadata.block_attempts as Record<string, number>)[block.id] || 0
+                                                            : 0
+                                                    }
+                                                    onAttempt={async () => {
+                                                        if (user) {
+                                                            const currentAttempts = (userGrade?.metadata?.block_attempts as Record<string, number>) || {};
+                                                            const newAttempts = {
+                                                                ...currentAttempts,
+                                                                [block.id]: (currentAttempts[block.id] || 0) + 1
+                                                            };
+
+                                                            try {
+                                                                const res = await lmsApi.submitScore(
+                                                                    user.id,
+                                                                    params.id,
+                                                                    params.lessonId,
+                                                                    userGrade?.score || 0,
+                                                                    { ...userGrade?.metadata, block_attempts: newAttempts }
+                                                                );
+                                                                setUserGrade(res);
+                                                            } catch (err) {
+                                                                console.error("Failed to persist block attempts", err);
+                                                            }
+                                                        }
+                                                    }}
+                                                />
                                             )}
                                             {block.type === 'fill-in-the-blanks' && (
                                                 <FillInTheBlanksPlayer id={block.id} title={block.title} content={block.content || ""} allowRetry={lesson.allow_retry} />

web/experience/src/components/blocks/MediaPlayer.tsx

@@ -21,6 +21,12 @@ export default function MediaPlayer({ id, title, url, media_type, config, initia
     const [hasStarted, setHasStarted] = useState(false);
     const [locked, setLocked] = useState(false);
 
+    useEffect(() => {
+        if (initialPlayCount !== undefined) {
+            setPlayCount(initialPlayCount);
+        }
+    }, [initialPlayCount]);
+
     const maxPlays = config?.maxPlays || 0;
 
     const CMS_API_URL = process.env.NEXT_PUBLIC_CMS_API_URL || "http://localhost:3001";

web/experience/src/components/blocks/QuizPlayer.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useState } from "react";
+import { useState, useEffect } from "react";
 
 interface QuizQuestion {
     id: string;
@@ -17,14 +17,25 @@ interface QuizPlayerProps {
         questions: QuizQuestion[];
     };
     allowRetry?: boolean;
+    maxAttempts?: number;
+    initialAttempts?: number;
+    onAttempt?: () => void;
 }
 
-export default function QuizPlayer({ id, title, quizData, allowRetry = true }: QuizPlayerProps) {
+export default function QuizPlayer({ id, title, quizData, allowRetry = true, maxAttempts = 0, initialAttempts = 0, onAttempt }: QuizPlayerProps) {
     const [userAnswers, setUserAnswers] = useState<Record<string, number[]>>({});
     const [submitted, setSubmitted] = useState(false);
+    const [attempts, setAttempts] = useState(initialAttempts || 0);
 
     const questions = quizData?.questions || [];
 
+    // Sync attempts with prop
+    useEffect(() => {
+        if (initialAttempts !== undefined) {
+            setAttempts(initialAttempts);
+        }
+    }, [initialAttempts]);
+
     const handleAnswer = (qId: string, optionIndex: number, isMulti: boolean) => {
         if (submitted) return;
         setUserAnswers(prev => {
@@ -40,12 +51,27 @@ export default function QuizPlayer({ id, title, quizData, allowRetry = true }: Q
         });
     };
 
+    const handleValidate = () => {
+        if (maxAttempts > 0 && attempts >= maxAttempts) return;
+
+        setSubmitted(true);
+        if (onAttempt) {
+            onAttempt();
+            setAttempts(prev => prev + 1);
+        }
+    };
+
     return (
         <div className="space-y-8" id={id}>
             <div className="space-y-2">
                 <h3 className="text-xl font-bold border-l-4 border-blue-500 pl-4 py-1 tracking-tight text-white uppercase tracking-widest text-[10px]">
                     {title || "Knowledge Check"}
                 </h3>
+                {maxAttempts > 0 && (
+                    <span className="text-[10px] font-bold uppercase tracking-widest px-3 py-1 rounded-full bg-white/5 border border-white/5 text-gray-500">
+                        Attempt {attempts} / {maxAttempts}
+                    </span>
+                )}
             </div>
 
             <div className="space-y-8">
@@ -93,18 +119,24 @@ export default function QuizPlayer({ id, title, quizData, allowRetry = true }: Q
                     <>
                         {!submitted && questions.length > 0 && (
                             <button
-                                onClick={() => setSubmitted(true)}
+                                onClick={handleValidate}
-                                className="btn-premium w-full py-5 font-black text-xs uppercase tracking-[0.2em] shadow-xl shadow-blue-500/20"
+                                disabled={maxAttempts > 0 && attempts >= maxAttempts}
+                                className={`btn-premium w-full py-5 font-black text-xs uppercase tracking-[0.2em] shadow-xl shadow-blue-500/20 ${maxAttempts > 0 && attempts >= maxAttempts ? 'opacity-50 cursor-not-allowed' : ''}`}
                             >
-                                Validate Answers
+                                {maxAttempts > 0 && attempts >= maxAttempts ? 'Max Attempts Reached' : 'Validate Answers'}
                             </button>
                         )}
                         {submitted && (
                             <button
-                                onClick={() => { setSubmitted(false); setUserAnswers({}); }}
+                                onClick={() => {
-                                className="w-full py-5 glass text-blue-400 font-black text-xs uppercase tracking-[0.2em] hover:bg-white/5 transition-all rounded-3xl border-white/5"
+                                    if (maxAttempts > 0 && attempts >= maxAttempts) return;
+                                    setSubmitted(false);
+                                    setUserAnswers({});
+                                }}
+                                disabled={maxAttempts > 0 && attempts >= maxAttempts}
+                                className={`w-full py-5 glass text-blue-400 font-black text-xs uppercase tracking-[0.2em] hover:bg-white/5 transition-all rounded-3xl border-white/5 ${maxAttempts > 0 && attempts >= maxAttempts ? 'opacity-50 cursor-not-allowed' : ''}`}
                             >
-                                Try Again
+                                {maxAttempts > 0 && attempts >= maxAttempts ? 'Max Attempts Reached' : 'Try Again'}
                             </button>
                         )}
                     </>