Initial commit

package.json

@@ -9,16 +9,20 @@
     "lint": "next lint"
   },
   "dependencies": {
+    "axios": "^1.9.0",
+    "canvas": "^3.1.0",
+    "next": "15.3.3",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
-    "next": "15.3.3"
+    "tesseract.js": "^6.0.1"
   },
   "devDependencies": {
-    "typescript": "^5",
+    "@tailwindcss/postcss": "^4",
+    "@types/axios": "^0.9.36",
     "@types/node": "^20",
     "@types/react": "^19",
     "@types/react-dom": "^19",
-    "@tailwindcss/postcss": "^4",
-    "tailwindcss": "^4"
+    "tailwindcss": "^4",
+    "typescript": "^5"
   }
 }

pages/components/quizmodal.tsx

+// frontend/pages/components/quizmodal.tsx
+import React, { useEffect, useState } from 'react';
+import Tesseract from 'tesseract.js';
+
+interface QuizModalProps {
+  slideImageUrl: string;
+  onClose: (result: 'correct' | 'fail') => void;
+  attempt: number;
+}
+
+export default function QuizModal({ slideImageUrl, onClose, attempt }: QuizModalProps) {
+  const [question, setQuestion] = useState('');
+  const [options, setOptions] = useState<string[]>([]);
+  const [selectedOption, setSelectedOption] = useState('');
+  const [correctLetter, setCorrectLetter] = useState('');
+  const [feedback, setFeedback] = useState('');
+  const [isCompleted, setIsCompleted] = useState(false);
+
+  useEffect(() => {
+    Tesseract.recognize(slideImageUrl, 'eng').then(({ data: { text } }) => {
+      const lines = text.split('\n').filter(l => l.trim());
+      const quizIndex = lines.findIndex(l => l.toLowerCase().includes('quiz'));
+      if (quizIndex >= 0) {
+        setQuestion(lines[quizIndex + 1]?.trim() || '');
+        setOptions(lines.slice(quizIndex + 2, quizIndex + 5));
+      }
+
+      const answerLine = lines.find(l => l.toLowerCase().startsWith('correct answer'));
+      if (answerLine) {
+        const match = answerLine.match(/[:\-]\s*([A-Z])/i);
+        if (match) {
+          setCorrectLetter(match[1].toUpperCase());
+        }
+      }
+    });
+  }, [slideImageUrl]);
+
+  const handleSubmit = () => {
+    if (isCompleted) return;
+
+    const selectedIndex = options.findIndex(opt => opt === selectedOption);
+    const selectedLetter = String.fromCharCode(65 + selectedIndex); // 65 = A
+
+    if (selectedLetter === correctLetter) {
+      setIsCompleted(true);
+      setFeedback('✅ Correct answer!');
+      setTimeout(() => onClose('correct'), 1000);
+    } else if (attempt >= 2) {
+      setFeedback('❌ Max attempts reached. Restarting...');
+      setTimeout(() => onClose('fail'), 1500);
+    } else {
+      setFeedback('❌ Wrong answer. Try again.');
+      setTimeout(() => onClose('fail'), 1500);
+    }
+  };
+
+  if (!question && options.length === 0) {
+    return (
+      <div style={styles.overlay}>
+        <div style={styles.modal}>
+          <p>🔍 Reading quiz from slide... Please wait.</p>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div style={styles.overlay}>
+      <div style={styles.modal}>
+        <h2>Quiz (Attempt {attempt + 1}/3)</h2>
+        <p style={{ fontWeight: 'bold' }}>{question}</p>
+        {options.map((option, index) => (
+          <label key={index} style={styles.option}>
+            <input
+              type="radio"
+              value={option}
+              checked={selectedOption === option}
+              onChange={() => !isCompleted && setSelectedOption(option)}
+              disabled={isCompleted}
+            />
+            {option}
+            {isCompleted && option === options[correctLetter.charCodeAt(0) - 65] && ' ✔️'}
+          </label>
+        ))}
+        <button
+          style={styles.submitButton}
+          onClick={handleSubmit}
+          disabled={!selectedOption || isCompleted}
+        >
+          {isCompleted ? 'Completed' : 'Submit Answer'}
+        </button>
+        {feedback && <p style={{ marginTop: 10 }}>{feedback}</p>}
+      </div>
+    </div>
+  );
+}
+
+const styles: { [key: string]: React.CSSProperties } = {
+  overlay: {
+    position: 'fixed',
+    top: 0,
+    left: 0,
+    width: '100vw',
+    height: '100vh',
+    backgroundColor: 'rgba(0,0,0,0.85)',
+    display: 'flex',
+    justifyContent: 'center',
+    alignItems: 'center',
+    zIndex: 1000,
+  },
+  modal: {
+    background: '#fff',
+    padding: '2rem',
+    borderRadius: 10,
+    width: '80%',
+    maxWidth: '500px',
+    textAlign: 'left',
+    zIndex: 1001,
+  },
+  option: {
+    display: 'block',
+    margin: '0.5rem 0',
+  },
+  submitButton: {
+    padding: '0.5rem 1rem',
+    backgroundColor: '#0070f3',
+    color: '#fff',
+    border: 'none',
+    borderRadius: 5,
+    cursor: 'pointer',
+    marginTop: 10,
+  },
+};

pages/components/slideviewer.tsx

+// frontend/pages/components/slideviewer.tsx
+import React, { useEffect, useRef, useState } from 'react';
+
+interface Slide {
+  slideNumber: number;
+  imageUrl: string;
+  audioUrl: string | null;
+  videoUrl: string | null;
+}
+
+interface Props {
+  slide: Slide;
+  currentIndex: number;
+  totalSlides: number;
+  isNextEnabled: boolean;
+  onAudioEnd: () => void;
+  onNext: () => void;
+  onPrev: () => void;
+  onRestart: () => void;
+  resetAudio: () => void;
+}
+
+export default function SlideViewer({
+  slide,
+  currentIndex,
+  totalSlides,
+  isNextEnabled,
+  onAudioEnd,
+  onNext,
+  onPrev,
+  onRestart,
+  resetAudio,
+}: Props) {
+  const audioRef = useRef<HTMLAudioElement>(null);
+  const [showVideo, setShowVideo] = useState(false);
+
+  useEffect(() => {
+  const handleKeyDown = (e: KeyboardEvent) => {
+    if (e.key === 'Escape' && showVideo) {
+      setShowVideo(false);
+      const videoEl = document.getElementById('video-player') as HTMLVideoElement;
+      if (videoEl) {
+        videoEl.pause();
+      }
+    }
+  };
+
+  window.addEventListener('keydown', handleKeyDown);
+  return () => window.removeEventListener('keydown', handleKeyDown);
+}, [showVideo]);
+
+  useEffect(() => {
+    resetAudio();
+    setShowVideo(false); // Reset video when slide changes
+    if (audioRef.current) {
+      audioRef.current.load();
+      audioRef.current.play().catch(() => {});
+    }
+  }, [slide]);
+
+  return (
+    <div style={styles.container}>
+      <button style={styles.prevButton} onClick={onPrev} disabled={currentIndex === 0}>
+        ◀
+      </button>
+
+      <div style={styles.content}>
+        <img
+          src={`http://localhost:3001${slide.imageUrl}`}
+          alt="Slide"
+          style={styles.image}
+        />
+
+        {slide.videoUrl && !showVideo && (
+          <button
+            style={styles.videoButton}
+            onClick={() => setShowVideo(true)}
+            title="Play Video"
+          >
+            ▶
+          </button>
+        )}
+
+        {showVideo && slide.videoUrl && (
+          <video
+            controls
+            autoPlay
+            style={styles.videoOverlay}
+            onEnded={() => setShowVideo(false)}
+          >
+            <source src={`http://localhost:3001${slide.videoUrl}`} type="video/mp4" />
+            Your browser does not support the video tag.
+          </video>
+        )}
+
+        {slide.audioUrl && (
+          <audio
+            ref={audioRef}
+            controls
+            onEnded={onAudioEnd}
+            style={styles.audio}
+          >
+            <source src={`http://localhost:3001${slide.audioUrl}`} type="audio/mpeg" />
+          </audio>
+        )}
+      </div>
+
+      <button
+        style={styles.nextButton}
+        onClick={onNext}
+        disabled={!isNextEnabled || currentIndex === totalSlides - 1}
+      >
+        ▶
+      </button>
+    </div>
+  );
+}
+
+const styles: { [key: string]: React.CSSProperties } = {
+  container: {
+    display: 'flex',
+    width: '100vw',
+    height: '100vh',
+    alignItems: 'center',
+    justifyContent: 'space-between',
+    padding: 20,
+    boxSizing: 'border-box',
+  },
+  prevButton: {
+    fontSize: '2rem',
+    cursor: 'pointer',
+    background: 'none',
+    border: 'none',
+    color: '#333',
+  },
+  nextButton: {
+    fontSize: '2rem',
+    cursor: 'pointer',
+    background: 'none',
+    border: 'none',
+    color: '#333',
+  },
+  content: {
+    flex: 1,
+    textAlign: 'center',
+    height: '100%',
+    position: 'relative',
+  },
+  image: {
+    maxHeight: 'calc(100vh - 120px)',
+    width: '100%',
+    maxWidth: '100%',
+    objectFit: 'contain',
+  },
+  audio: {
+    position: 'absolute',
+    bottom: 20,
+    left: '50%',
+    transform: 'translateX(-50%)',
+  },
+  videoButton: {
+    position: 'absolute',
+    right: '25%',
+    top: '50%',
+    transform: 'translateY(-50%)',
+    backgroundColor: '#0070f3',
+    color: 'white',
+    border: 'none',
+    borderRadius: '50%',
+    width: 50,
+    height: 50,
+    fontSize: '1.5rem',
+    cursor: 'pointer',
+    zIndex: 2,
+  },
+  videoOverlay: {
+    position: 'absolute',
+    top: '10%',
+    left: '50%',
+    transform: 'translateX(-50%)',
+    maxWidth: '80%',
+    maxHeight: '80%',
+    zIndex: 10,
+    backgroundColor: '#000',
+    borderRadius: 8,
+  },
+};

pages/index.tsx

-import Image from "next/image";
-import { Geist, Geist_Mono } from "next/font/google";
+import React, { useState } from 'react';
+import axios from 'axios';
+import { useRouter } from 'next/router';
 
-const geistSans = Geist({
-  variable: "--font-geist-sans",
-  subsets: ["latin"],
-});
-
-const geistMono = Geist_Mono({
-  variable: "--font-geist-mono",
-  subsets: ["latin"],
-});
+interface Slide {
+  slideNumber: number;
+  imageUrl: string;
+  audioUrl: string | null;
+  videoUrl: string | null;
+}
 
 export default function Home() {
+  const [pdfFile, setPdfFile] = useState<File | null>(null);
+  const [zipFile, setZipFile] = useState<File | null>(null);
+  const [loading, setLoading] = useState(false);
+  const router = useRouter();
+
+  const handleUpload = async () => {
+    if (!pdfFile || !zipFile) {
+      alert('Please select both PDF and ZIP files!');
+      return;
+    }
+
+
+    const formData = new FormData();
+    formData.append('pdf', pdfFile);
+    formData.append('zip', zipFile);
+
+
+    try {
+      setLoading(true);
+      const res = await axios.post<Slide[]>('http://localhost:3001/upload', formData, {
+        headers: { 'Content-Type': 'multipart/form-data' },
+        timeout: 60000, // 60 seconds for large files
+      });
+      console.log(res.data,'res.data')
+      localStorage.setItem('slides', JSON.stringify(res.data));
+      router.push('/player');
+    } catch (err) {
+      console.error('Upload failed:', err);
+      alert('Upload failed. Please try again.');
+    } finally {
+      setLoading(false);
+    }
+  };
+
   return (
-    <div
-      className={`${geistSans.className} ${geistMono.className} grid grid-rows-[20px_1fr_20px] items-center justify-items-center min-h-screen p-8 pb-20 gap-16 sm:p-20 font-[family-name:var(--font-geist-sans)]`}
-    >
-      <main className="flex flex-col gap-[32px] row-start-2 items-center sm:items-start">
-        <Image
-          className="dark:invert"
-          src="/next.svg"
-          alt="Next.js logo"
-          width={180}
-          height={38}
-          priority
-        />
-        <ol className="list-inside list-decimal text-sm/6 text-center sm:text-left font-[family-name:var(--font-geist-mono)]">
-          <li className="mb-2 tracking-[-.01em]">
-            Get started by editing{" "}
-            <code className="bg-black/[.05] dark:bg-white/[.06] px-1 py-0.5 rounded font-[family-name:var(--font-geist-mono)] font-semibold">
-              pages/index.tsx
-            </code>
-            .
-          </li>
-          <li className="tracking-[-.01em]">
-            Save and see your changes instantly.
-          </li>
-        </ol>
-        <div className="flex gap-4 items-center flex-col sm:flex-row">
-          <a
-            className="rounded-full border border-solid border-transparent transition-colors flex items-center justify-center bg-foreground text-background gap-2 hover:bg-[#383838] dark:hover:bg-[#ccc] font-medium text-sm sm:text-base h-10 sm:h-12 px-4 sm:px-5 sm:w-auto"
-            href="https://vercel.com/new?utm_source=create-next-app&utm_medium=default-template-tw&utm_campaign=create-next-app"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            <Image
-              className="dark:invert"
-              src="/vercel.svg"
-              alt="Vercel logomark"
-              width={20}
-              height={20}
-            />
-            Deploy now
-          </a>
-          <a
-            className="rounded-full border border-solid border-black/[.08] dark:border-white/[.145] transition-colors flex items-center justify-center hover:bg-[#f2f2f2] dark:hover:bg-[#1a1a1a] hover:border-transparent font-medium text-sm sm:text-base h-10 sm:h-12 px-4 sm:px-5 w-full sm:w-auto md:w-[158px]"
-            href="https://nextjs.org/docs?utm_source=create-next-app&utm_medium=default-template-tw&utm_campaign=create-next-app"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            Read our docs
-          </a>
-        </div>
-      </main>
-      <footer className="row-start-3 flex gap-[24px] flex-wrap items-center justify-center">
-        <a
-          className="flex items-center gap-2 hover:underline hover:underline-offset-4"
-          href="https://nextjs.org/learn?utm_source=create-next-app&utm_medium=default-template-tw&utm_campaign=create-next-app"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <Image
-            aria-hidden
-            src="/file.svg"
-            alt="File icon"
-            width={16}
-            height={16}
-          />
-          Learn
-        </a>
-        <a
-          className="flex items-center gap-2 hover:underline hover:underline-offset-4"
-          href="https://vercel.com/templates?framework=next.js&utm_source=create-next-app&utm_medium=default-template-tw&utm_campaign=create-next-app"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <Image
-            aria-hidden
-            src="/window.svg"
-            alt="Window icon"
-            width={16}
-            height={16}
-          />
-          Examples
-        </a>
-        <a
-          className="flex items-center gap-2 hover:underline hover:underline-offset-4"
-          href="https://nextjs.org?utm_source=create-next-app&utm_medium=default-template-tw&utm_campaign=create-next-app"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <Image
-            aria-hidden
-            src="/globe.svg"
-            alt="Globe icon"
-            width={16}
-            height={16}
-          />
-          Go to nextjs.org →
-        </a>
-      </footer>
+    <div style={styles.container}>
+      <h1 style={styles.heading}>Upload Slides & Media</h1>
+
+      <div style={styles.formGroup}>
+        <label style={styles.label}>Upload PDF file:</label>
+        <input type="file" accept=".pdf" onChange={(e) => setPdfFile(e.target.files?.[0] || null)} />
+      </div>
+
+
+      <div style={styles.formGroup}>
+        <label style={styles.label}>Upload Media ZIP (mp3/mp4):</label>
+        <input type="file" accept=".zip" onChange={(e) => setZipFile(e.target.files?.[0] || null)} />
+      </div>
+
+      <button onClick={handleUpload} style={styles.uploadButton} disabled={loading}>
+        {loading ? 'Uploading...' : 'Start Upload'}
+      </button>
     </div>
   );
 }
+
+const styles: { [key: string]: React.CSSProperties } = {
+  container: {
+    padding: '2rem',
+    background: '#f9fafb',
+    minHeight: '100vh',
+    display: 'flex',
+    flexDirection: 'column',
+    alignItems: 'center',
+    fontFamily: 'Segoe UI, sans-serif',
+  },
+  heading: {
+    fontSize: '2.5rem',
+    color: '#1f2937',
+    marginBottom: '2rem',
+    textAlign: 'center',
+  },
+  formGroup: {
+    marginBottom: '1.5rem',
+    display: 'flex',
+    flexDirection: 'column',
+    width: '100%',
+    maxWidth: '400px',
+  },
+  label: {
+    marginBottom: '0.5rem',
+    fontSize: '1rem',
+    color: '#374151',
+  },
+  uploadButton: {
+    marginTop: '1rem',
+    padding: '0.75rem 2rem',
+    fontSize: '1rem',
+    backgroundColor: '#2563eb',
+    color: '#ffffff',
+    border: 'none',
+    borderRadius: 8,
+    cursor: 'pointer',
+    fontWeight: 'bold',
+    transition: 'background-color 0.2s ease-in-out',
+  },
+};

pages/player.tsx

+// frontend/pages/player.tsx
+import React, { useEffect, useState } from 'react';
+import QuizModal from './components/quizmodal';
+import SlideViewer from './components/slideviewer';
+
+interface Slide {
+  slideNumber: number;
+  imageUrl: string;
+  audioUrl: string | null;
+  videoUrl: string | null;
+}
+
+const backendUrl = 'http://localhost:3001';
+
+export default function Player() {
+  const [slides, setSlides] = useState<Slide[]>([]);
+  const [currentIndex, setCurrentIndex] = useState(0);
+  const [audioEnded, setAudioEnded] = useState(false);
+  const [completedSlides, setCompletedSlides] = useState<number[]>([]);
+  const [showQuiz, setShowQuiz] = useState(false);
+  const [quizImageUrl, setQuizImageUrl] = useState('');
+  const [quizAttempts, setQuizAttempts] = useState(0);
+  const [quizRedirectMap, setQuizRedirectMap] = useState<{ [key: number]: number }>({});
+
+  useEffect(() => {
+    const stored = localStorage.getItem('slides');
+    if (!stored) {
+      alert('No slide data found. Please upload again.');
+      return;
+    }
+
+    try {
+      const parsed = JSON.parse(stored);
+      const parsedSlides = parsed.slides;
+
+      if (Array.isArray(parsedSlides) && parsedSlides.length > 0) {
+        setSlides(parsedSlides);
+
+        // Extract quiz slide numbers
+        const quizSlides: number[] = parsedSlides
+          .filter((s: Slide) => s.imageUrl.toLowerCase().includes('quiz'))
+          .map((s: Slide) => s.slideNumber)
+          .sort((a, b) => a - b);
+
+        // Build redirect map
+        const redirectMap: { [key: number]: number } = {};
+        for (let i = 0; i < quizSlides.length; i++) {
+          const currentQuiz = quizSlides[i];
+          const previousQuiz = quizSlides[i - 1] ?? 0; // 0 if first quiz
+          const fallback = parsedSlides.find(s => s.slideNumber > previousQuiz)?.slideNumber ?? 0;
+          redirectMap[currentQuiz] = fallback;
+        }
+
+        setQuizRedirectMap(redirectMap);
+      } else {
+        alert('Slide data is empty or invalid. Please re-upload.');
+      }
+    } catch (e) {
+      alert('Slide data is corrupted. Please upload again.');
+    }
+  }, []);
+
+  useEffect(() => {
+    setAudioEnded(false);
+    setShowQuiz(false);
+
+    const currentSlide = slides[currentIndex];
+    if (!currentSlide) return;
+
+    const filename = currentSlide.imageUrl.toLowerCase();
+    if (filename.includes('quiz')) {
+      setQuizImageUrl(`${backendUrl}${currentSlide.imageUrl}`);
+      setShowQuiz(true);
+    }
+  }, [currentIndex, slides]);
+
+
+  const handleQuizClose = (result: 'correct' | 'fail') => {
+    setShowQuiz(false);
+    if (result === 'correct') {
+      setCompletedSlides((prev) => [...prev, slides[currentIndex].slideNumber]);
+      setCurrentIndex((prev) => prev + 1);
+      setQuizAttempts(0);
+    } else if (quizAttempts < 2) {
+      setQuizAttempts((prev) => prev + 1);
+
+      const failedSlideNumber = slides[currentIndex].slideNumber;
+      const redirectTo = quizRedirectMap[failedSlideNumber] ?? 0;
+      const newIndex = slides.findIndex(s => s.slideNumber === redirectTo);
+      setCurrentIndex(newIndex >= 0 ? newIndex : 0);
+    } else {
+      setQuizAttempts(0); // Max attempts used, move forward
+      setCurrentIndex((prev) => prev + 1);
+    }
+  };
+
+  const currentSlide = slides[currentIndex];
+  const isCompleted = completedSlides.includes(currentSlide?.slideNumber ?? -1);
+  const isNextEnabled = audioEnded || isCompleted || !currentSlide?.audioUrl;
+
+  const handleAudioEnd = () => {
+    setAudioEnded(true);
+    setCompletedSlides((prev) => [...new Set([...prev, currentSlide.slideNumber])]);
+  };
+
+  if (!currentSlide) {
+    return <div style={{ padding: 20 }}><h2>No slides to display</h2></div>;
+  }
+
+  return (
+    <>
+    <div style={{ textAlign: 'center', margin: '10px 0', fontSize: '18px' }}>
+  Slide {currentIndex + 1} of {slides.length}
+</div>
+
+      {!showQuiz && (
+        <SlideViewer
+          slide={currentSlide}
+          currentIndex={currentIndex}
+          totalSlides={slides.length}
+          isNextEnabled={isNextEnabled}
+          onAudioEnd={handleAudioEnd}
+          onNext={() => setCurrentIndex(prev => prev + 1)}
+          onPrev={() => setCurrentIndex(prev => Math.max(prev - 1, 0))}
+          onRestart={() => setCurrentIndex(0)}
+          resetAudio={() => setAudioEnded(false)}
+        />
+      )}
+
+      {showQuiz && (
+        <QuizModal
+          slideImageUrl={quizImageUrl}
+          onClose={handleQuizClose}
+          attempt={quizAttempts}
+        />
+      )}
+    </>
+  );
+}

utils/api.ts

+// utils/api.ts
+import axios from 'axios';
+
+const API = axios.create({
+  baseURL: 'http://localhost:3001', // <-- Your backend URL here
+  timeout: 80000,
+});
+
+export default API;