HCI/scanner.html at master · Mustafa-K4/HCI · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width,initial-scale=1" />
  <title>EcoBin – Scanner</title>
  <link rel="stylesheet" href="css/styles.css" />
  <style>

    #video {
    width: 100%;
    max-width: 400px;
    border-radius: 0.75rem;
    box-shadow:
      0 0 8px rgba(0, 0, 0, 0.6),
      0 0 16px rgba(0, 0, 0, 0.4),
      0 0 24px rgba(0, 0, 0, 0.2);
    background: #000;
  }
    .scan-status {
      margin-top: 0.5rem;
      font-size: 0.9rem;
      color: black;
    }
    #take-photo {
      margin-top: 1rem;
      width: 100%;
      max-width: 400px;
    }

    #captureCanvas {
      display: none;
    }
  </style>
</head>
<body>
  <div class="glow-box">
    <header><h1>EcoBin Scanner</h1></header>
  </div>

  <main style="text-align:center;">
    <div class="highlight">
      <video id="video" autoplay muted playsinline></video>
      <p class="scan-status" id="status">Initializing camera…</p>
      <button class="btn" id="take-photo">Take Picture</button>
    </div>
  </main>

  <canvas id="captureCanvas"></canvas>

  <a href="index.html" class="back-btn">← Back to Menu</a>

  <script>
    (async () => {
      const statusEl = document.getElementById('status');
      const video    = document.getElementById('video');
      const button   = document.getElementById('take-photo');
      const canvas   = document.getElementById('captureCanvas');
      const ctx      = canvas.getContext('2d');


      try {
        const stream = await navigator.mediaDevices.getUserMedia({
          video: { facingMode: 'environment' }
        });
        video.srcObject = stream;
        statusEl.textContent = 'Point camera & tap “Take Picture”';
      } catch (err) {
        statusEl.textContent = '❌ Camera access denied';
        console.error(err);
        return;
      }


      let detector = null;
      if ('BarcodeDetector' in window) {
        detector = new BarcodeDetector({
          formats: ['ean_13','code_128','qr_code']
        });
      }


      button.addEventListener('click', async () => {
        statusEl.textContent = 'Processing…';


        canvas.width  = video.videoWidth;
        canvas.height = video.videoHeight;
        ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
        const imageData = canvas.toDataURL('image/png');
        sessionStorage.setItem('capturedImage', imageData);


        if (detector) {
          try {
            const barcodes = await detector.detect(video);
            if (barcodes.length) {
              sessionStorage.setItem('scannedCode', barcodes[0].rawValue);
            }
          } catch (e) {
            console.warn('Barcode scan failed:', e);
          }
        }


        video.srcObject.getTracks().forEach(t => t.stop());


        window.location = 'scanner-confirm.html';
      });
    })();
  </script>
</body>
</html>