AO3: No Re-Kudos

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Hide kudos button if you've already left kudos.
换行
// ==UserScript==
// @name         AO3: No Re-Kudos
// @version      1.1
// @author       BlackBatCat
// @description  Hide kudos button if you've already left kudos.
// @license      MIT
// @match        *://archiveofourown.org/works/*
// @match        *://archiveofourown.org/chapters/*
// @grant        none
// @namespace http://greasyfork.icu/users/1498004
// ==/UserScript==

(function () {
  "use strict";

  // Get work ID from the kudos form (not URL, since chapter IDs differ from work IDs)
  const kudoButton = document.getElementById("kudo_submit");
  if (!kudoButton) return;

  const workIdInput = document.getElementById("kudo_commentable_id");
  if (!workIdInput) return;

  const workId = workIdInput.value;
  if (!workId) return;

  // Check if we've already given kudos to this work
  const kudosHistory = JSON.parse(
    localStorage.getItem("ao3_no_rekudos_config") || "{}"
  );

  if (kudosHistory[workId]) {
    // Hide the kudos button immediately
    kudoButton.style.display = "none";
  } else {
    // Set up click listener to record when kudos is given
    kudoButton.addEventListener("click", function () {
      // Record that we've given kudos to this work
      const kudosHistory = JSON.parse(
        localStorage.getItem("ao3_no_rekudos_config") || "{}"
      );
      kudosHistory[workId] = true;
      localStorage.setItem(
        "ao3_no_rekudos_config",
        JSON.stringify(kudosHistory)
      );

      // Hide the button
      this.style.display = "none";
    });
  }
})();