<!doctype html>
<meta charset="utf-8">
<title>41 tab lifecycle</title>
<link rel="stylesheet" href="../_style.css">
<script src="../_lib.js"></script>
<body>
<main>
  <p>Goal: create a new tab, inspect it, close it, return to parent, then verify lifecycle state.</p>
  <p id="msg"></p>
  <button id="verify">Verify tab lifecycle</button>
</main>
<script>
Challenge.init({ id: "tab-lifecycle", instructions: "new tab → inspect child → close child → return parent → Verify" });
const qs = new URLSearchParams(location.search);
const key = "pi-chrome-suite:tab-lifecycle:state";
function readState(){ try { return JSON.parse(localStorage.getItem(key) || "{}"); } catch { return {}; } }
function replaceState(next){ localStorage.setItem(key, JSON.stringify({ ...next, ts: Date.now() })); }
function writeState(patch){ localStorage.setItem(key, JSON.stringify({ ...readState(), ...patch, ts: Date.now() })); }

if (qs.get("child") === "1") {
  document.title = "[CHILD] 41 tab lifecycle";
  document.getElementById("msg").textContent = "Child tab opened. Close this tab, then return to parent.";
  writeState({ opened: true, childUrl: location.href, childTitle: document.title });
  window.addEventListener("pagehide", () => writeState({ closed: true, closedAt: Date.now() }));
  window.addEventListener("beforeunload", () => writeState({ closed: true, closedAt: Date.now() }));
  // Do not call Challenge.pass here: parent verification must be the only suite PASS.
  Challenge.log("child-loaded", { url: location.href });
} else {
  document.getElementById("msg").textContent = "Parent tab. Runner should open this same file with ?child=1 in a new tab, inspect it, close it, then return here.";
  replaceState({ parentLoaded: true, closed: false });
  document.getElementById("verify").addEventListener("click", (e) => {
    const s = readState();
    const bad = [];
    if (!e.isTrusted) bad.push("verify click isTrusted=false");
    if (!s.opened) bad.push("child tab did not record opened=true");
    if (!s.childUrl || !s.childUrl.includes("child=1")) bad.push("child URL not recorded");
    if (!s.closed) bad.push("child tab close/pagehide was not recorded");
    Challenge.log("tab-state", s);
    if (bad.length) Challenge.fail(...bad);
    else Challenge.pass("new/inspect/close/return tab lifecycle completed");
  });
}
</script>
</body>