archive-submission.js

function init(metadata) {
  if (metadata.path === "/item" && metadata.item.type === "story") {
    const storyLink = document.querySelector("span.titleline a").href;

    const separatorPipe = document.createTextNode(" | ");
    const archiveButton = document.createElement("a");

    archiveButton.innerText = "archive";
    archiveButton.href =
      "https://wayback.now.sh/" + encodeURIComponent(storyLink);
    archiveButton.target = "_blank";
    archiveButton.classList.add("__rhn__archive-button");

    const targetParent =
      document.querySelector("table.fatitem td.subtext span.subline") ||
      document.querySelector("table.fatitem span.comhead");

    if (!targetParent) return false;
    const targetSibling = targetParent.querySelector("a.hnpast").nextSibling;

    if (!targetSibling) return false;
    targetParent.insertBefore(separatorPipe, targetSibling);
    targetParent.insertBefore(archiveButton, targetSibling);

    return true;
  }

  return false;
}

const details = {
  id: "archive-submission",
  pages: {
    include: ["/item"],
    exclude: [],
  },
  loginRequired: false,
  init,
};

export default details;