<!DOCTYPE html>
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Copyright 2020 The Cobalt Authors. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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<html>
<meta charset="utf-8">
<title>test</title>
<script>
  var changeChannel = null;
  var targetChannel = null;

  function tryChangeChannel() {
    const currentChannel = window.h5vcc.updater.getUpdaterChannel();
    const status = window.h5vcc.updater.getUpdateStatus();

    if ((currentChannel == "") ||
        ((status != "App is up to date") &&
         (status != "Update installed, pending restart"))) {
      return;
    }

    if (currentChannel == "qa") {
      window.h5vcc.updater.setUpdaterChannel(targetChannel);
      console.log("channel was changed to " + targetChannel);
      return;
    }

    if (currentChannel == targetChannel) {
      console.log("update from " + targetChannel + " channel installed");
    }
  }

  var query = window.location.search;

  if (query) {
    // Splits each paramter of the query into an array after removing the
    // prepended "?".
    query = query.slice(1).split("&");
  }

  query.forEach(part => {
    if (changeChannel) {
      return;
    }

    if (part.startsWith("channel=")) {
      targetChannel = part.split("=")[1];
      changeChannel = setInterval(tryChangeChannel, 500);
    }
  });
</script>
</html>