'use strict';

// A transient image request failure must not require reloading the whole page.
// Keep retries finite, including failures that happened before this deferred script ran.
document.querySelectorAll('img[src^="assets/"]').forEach(img => {
  const original = new URL(img.getAttribute('src'), document.baseURI);
  let attempts = 0;
  let pending = false;
  function recover() {
    if (pending || attempts >= 2 || !img.complete || img.naturalWidth > 0) return;
    pending = true;
    const attempt = ++attempts;
    setTimeout(() => {
      pending = false;
      if (!img.isConnected || !img.complete || img.naturalWidth > 0) return;
      const retry = new URL(original.href);
      retry.searchParams.set('tj_image_retry', String(attempt));
      img.src = retry.href;
    }, attempt * 750);
  }
  img.addEventListener('error', recover);
  window.addEventListener('pageshow', recover);
  recover();
});