<!DOCTYPE html>
<html lang="lv">
<head>
  <meta charset="Windows-1257">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Kolkas otrā webkamera</title>
  <style>
    #imageContainer {
      position: relative;
      width: 100%;
      max-width: 1400px;
      margin: auto;
    }

    img {
      width: 100%;
      height: auto;
      display: block;
      position: absolute;
      top: 0;
      left: 0;
      opacity: 0;
    }

    img.visible {
      opacity: 1;
      z-index: 2;
    }

    #errorMsg {
      text-align: center;
      color: red;
      font-size: 1.2em;
      padding: 10px;
      display: none;
    }
  </style>
</head>
<body>

<div id="imageContainer">
  <img id="imgA" class="visible" src="https://meteo.kolka.lv/proxy-image.php?url=http://192.168.1.113/snap.jpeg&cb=" + new Date().getTime() alt="Kolkas kamera">
</div>
<div id="errorMsg">Image failed to load.</div>

<script>
  const REFRESH_INTERVAL = 2000;
  const RETRY_LIMIT = 3;

  function refreshImage(retryCount = 0) {
    const imgElement = document.getElementById('imgA');
    const timestamp = Date.now();  // Unique cache-busting parameter
    const newSrc = `https://meteo.kolka.lv/proxy-image.php?url=http://192.168.1.113/snap.jpeg&cb=${timestamp}`;

    const newImg = new Image();

    newImg.onload = () => {
      imgElement.src = newSrc;
      imgElement.classList.add('visible');
      document.getElementById('errorMsg').style.display = 'none';
    };

    newImg.onerror = () => {
      if (retryCount < RETRY_LIMIT) {
        setTimeout(() => refreshImage(retryCount + 1), 1000 * (retryCount + 1));  // Exponential backoff
      } else {
        document.getElementById('errorMsg').style.display = 'block';
      }
    };

    newImg.src = newSrc;
  }

  setInterval(() => refreshImage(), REFRESH_INTERVAL);
</script>

</body>
</html>