/* OxygenHub report frame (oxygenhub#127): the hub adds this to a report's
   HTML pages. It tells the page around the frame how tall the report is,
   so the frame grows to fit instead of scrolling, and takes the hub's
   theme (data-theme="dark" or "light" on <html>) for report.css. It sends
   nothing but sizes, and reads nothing but the theme. */
(function () {
  if (window.parent === window) return;
  var root = document.documentElement, last = 0;
  var send = function () {
    var h = Math.ceil(Math.max(root.scrollHeight, document.body ? document.body.scrollHeight : 0));
    if (h && h !== last) {
      last = h;
      window.parent.postMessage({ oxygenhubReport: { height: h } }, "*");
    }
  };
  window.addEventListener("message", function (e) {
    if (e.source !== window.parent) return;
    var t = e.data && e.data.oxygenhubTheme;
    if (t === "dark" || t === "light") root.dataset.theme = t;
  });
  window.addEventListener("load", send);
  if (window.ResizeObserver) new ResizeObserver(send).observe(root);
  else setInterval(send, 500);
  // The frame interface (RP4): report.run() is the run on screen, and
  // report.history("frames.csv") that file of data/ across the report's
  // runs on its bookmark, oldest first, each { run, created_ms, current,
  // text }. Both are promises; outside the hub there is no report object.
  var asked = 0, waiting = {};
  window.addEventListener("message", function (e) {
    var a = e.source === window.parent && e.data && e.data.oxygenhubAnswer;
    if (!a || !waiting[a.n]) return;
    var w = waiting[a.n]; delete waiting[a.n];
    if (a.error) w.reject(new Error(a.error)); else w.resolve(a.value);
  });
  var ask = function (what, dataset) {
    return new Promise(function (resolve, reject) {
      var n = ++asked;
      waiting[n] = { resolve: resolve, reject: reject };
      window.parent.postMessage({ oxygenhubAsk: { n: n, what: what, dataset: dataset } }, "*");
      setTimeout(function () { if (waiting[n]) { delete waiting[n]; reject(new Error("no answer from the hub")); } }, 30000);
    });
  };
  window.report = { run: function () { return ask("run"); }, history: function (dataset) { return ask("history", dataset); } };
  window.parent.postMessage({ oxygenhubReport: { ready: true } }, "*");
})();