// ==UserScript==
// @name         123网盘口令助手
// @namespace    https://greasyfork.org/zh-CN/users/1135389-chumor
// @version      0.1.0
// @description  提取并复制123网盘口令，支持手动扫描与复制解锁开关，提供底部Toast提示。
// @author       Chumor
// @license      MIT
// @match        https://www.123pan.com/*
// @match        https://www.123pan.cn/*
// @grant        GM_setClipboard
// @grant        GM_registerMenuCommand
// @grant        GM_getValue
// @grant        GM_setValue
// ==/UserScript==

(function () {
  "use strict";

  /**
   * 显示底部 Toast 提示
   * @param {string} msg - 要显示的提示文本
   */
  function notify(msg) {
    const div = document.createElement("div");
    div.textContent = msg;
    div.style.cssText = `
      position: fixed;
      bottom: 12%;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(0,0,0,0.75);
      color: #fff;
      padding: 8px 14px;
      border-radius: 20px;
      font-size: 14px;
      max-width: 80%;
      text-align: center;
      z-index: 99999;
    `;
    document.body.appendChild(div);
    setTimeout(() => {
      div.style.transition = "opacity 0.4s";
      div.style.opacity = "0";
      setTimeout(() => div.remove(), 400);
    }, 1800);
  }

  /**
   * 复制文本到剪贴板
   * @param {string} text - 要复制的内容
   */
  function copy(text) {
    try {
      GM_setClipboard(text);
      notify("口令已复制");
    } catch {
      notify("复制失败");
    }
  }

  /**
   * 扫描页面中的123网盘口令并复制
   * 口令格式示例: ##Xa23QfOeoNreoBa##
   */
  function scanCode() {
    const regex = /##[A-Za-z0-9]+##/;
    const match = document.body.innerText.match(regex);
    if (match) {
      copy(match[0]);
      return true;
    }
    notify("未发现口令");
    return false;
  }

  /**
   * 复制解锁功能（允许网页中的复制与右键）
   */
  const KEY = "unlock_copy";
  let unlock = GM_getValue(KEY, false);

  function toggleUnlock() {
    unlock = !unlock;
    GM_setValue(KEY, unlock);
    if (unlock) {
      document.addEventListener("copy", stop, true);
      document.addEventListener("contextmenu", stop, true);
      notify("复制解锁已开启");
    } else {
      document.removeEventListener("copy", stop, true);
      document.removeEventListener("contextmenu", stop, true);
      notify("复制解锁已关闭");
    }
  }

  function stop(e) {
    e.stopPropagation();
  }

  if (unlock) toggleUnlock();

  // 注册菜单功能
  GM_registerMenuCommand("重新扫描口令", scanCode);
  GM_registerMenuCommand(unlock ? "关闭复制解锁" : "开启复制解锁", toggleUnlock);
})();