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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>IndexedDB — retrieve demo</title>
  <style>
    body {
      font-family: system-ui, sans-serif;
      margin: 0;
      padding: 1.5rem;
      background: #f8fafc;
      color: #334155;
      line-height: 1.6;
    }
    h1 { margin: 0 0 0.5rem; font-size: 1.25rem; color: #0f172a; }
    p { margin: 0 0 1rem; max-width: 460px; }
    button {
      padding: 0.55rem 1rem;
      font-size: 0.9375rem;
      background: #2563eb;
      color: #fff;
      border: none;
      border-radius: 8px;
      cursor: pointer;
    }
    button:hover { background: #1d4ed8; }
    button:disabled { opacity: 0.6; cursor: not-allowed; }
    #result {
      margin-top: 0.75rem;
      padding: 0.75rem 1rem;
      max-width: 460px;
      background: #fff;
      border: 1px solid #e2e8f0;
      border-radius: 8px;
      font-size: 0.875rem;
      border-left: 4px solid #22c55e;
    }
    pre { margin: 0.5rem 0 0; font-size: 0.8125rem; white-space: pre-wrap; }
  </style>
</head>
<body>
  <h1>IndexedDB retrieve example</h1>
  <p>Record id 1 is saved on load. Click the button to read it with <code>get(1)</code>.</p>

  <button type="button" id="retrieveBtn" disabled>Retrieve Data</button>
  <p id="result">Waiting for database&hellip;</p>

  <script>
    var resultEl = document.getElementById('result');
    var db;

    var request = indexedDB.open('myDatabase', 1);

    request.onupgradeneeded = function (event) {
      var store = event.target.result.createObjectStore('myStore', { keyPath: 'id' });
      store.createIndex('name', 'name', { unique: false });
    };

    request.onsuccess = function (event) {
      db = event.target.result;

      var seedTx = db.transaction(['myStore'], 'readwrite');
      seedTx.objectStore('myStore').put({
        id: 1,
        name: 'Sample Item',
        value: 42
      });

      seedTx.oncomplete = function () {
        resultEl.textContent = 'Record id 1 is ready. Click Retrieve Data.';
        document.getElementById('retrieveBtn').disabled = false;
      };
    };

    request.onerror = function (event) {
      resultEl.textContent = 'Database error: ' + event.target.error.message;
    };

    document.getElementById('retrieveBtn').addEventListener('click', function () {
      var tx = db.transaction(['myStore'], 'readonly');
      var getReq = tx.objectStore('myStore').get(1);

      getReq.onsuccess = function () {
        var data = getReq.result;
        if (data) {
          resultEl.innerHTML = '<strong>Retrieved data:</strong><pre>' +
            JSON.stringify(data, null, 2) + '</pre>';
        } else {
          resultEl.textContent = 'No data found for id 1.';
        }
      };

      getReq.onerror = function (event) {
        resultEl.textContent = 'Error: ' + event.target.error.message;
      };
    });
  </script>
</body>
</html>
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