// ==UserScript==
// @name         Misskey Always Show Replies
// @namespace    https://bubbletea.dev/
// @version      1.0
// @description  Automatically clicks the "Show replies" button on Misskey and misskey instances
// @author       shibao
// @include      /^https://.*misskey.*$/
// @downloadURL	 https://gitea.bubbletea.dev/shibao/misskey-always-show-replies/raw/branch/stable/misskey-always-show-replies.user.js
// @updateURL    https://gitea.bubbletea.dev/shibao/misskey-always-show-replies/raw/branch/stable/misskey-always-show-replies.user.js
// @grant        none
// ==/UserScript==

// from https://developer.mozilla.org/en-US/docs/Web/API/Node#recurse_through_child_nodes
function eachNode(rootNode, callback) {
  if (!callback) {
    const nodes = [];
    eachNode(rootNode, function (node) {
      nodes.push(node);
    });
    return nodes;
  }

  if (false === callback(rootNode)) {
    return false;
  }

  if (rootNode.hasChildNodes()) {
    const nodes = rootNode.childNodes;
    for (let i = 0, l = nodes.length; i < l; ++i) {
      if (false === eachNode(nodes[i], callback)) {
        return;
      }
    }
  }
}

(function () {
  "use strict";

  const observer = new MutationObserver(function (mutationList) {
    for (const mutation of mutationList) {
      for (const addedNode of mutation.addedNodes) {
        eachNode(addedNode, function (node) {
          node.nodeName == "DIV" &&
            node.innerHTML == "Show replies" &&
            node.closest("button._button")?.click();
        });
      }
    }
  });

  observer.observe(document, {
    childList: true,
    subtree: true,
    attributes: true,
    attributeFilter: ["role"],
  });
})();