/**
 * AKSRT Content Protection — Copy copyright / Right-click disable / F12 detection
 *
 * All features are DEFAULT OFF and configurable via Settings.
 * This is a "soft" protection — it increases the barrier but cannot truly prevent copying.
 *
 * @package AKSRT
 */

(function () {
  'use strict';

  var config = (window.aksrtData && window.aksrtData.contentProtect) || {};

  // Bail if nothing enabled
  if (!config.enabled) return;

  /* ============================================================
   * 1. 复制时追加版权声明
   * ============================================================ */
  if (config.copyNotice) {
    document.addEventListener('copy', function (e) {
      var selection = window.getSelection();
      if (!selection || selection.isCollapsed) return;

      var text = selection.toString();
      if (text.length < 20) return; // Too short, skip

      var notice = '\n\n---\n' +
        '版权声明：本文' + (config.copyNoticeText || '来自本站，请尊重原创版权。') + '\n' +
        '链接：' + window.location.href;

      // Append notice to clipboard
      var clipboardData = e.clipboardData || window.clipboardData;
      if (clipboardData) {
        e.preventDefault();
        clipboardData.setData('text/plain', text + notice);
      }
    });
  }

  /* ============================================================
   * 2. 禁用右键菜单
   * ============================================================ */
  if (config.disableRightClick) {
    document.addEventListener('contextmenu', function (e) {
      // Allow on input/textarea elements
      var tag = e.target.tagName;
      if (tag === 'INPUT' || tag === 'TEXTAREA' || e.target.isContentEditable) return;

      e.preventDefault();

      // Show brief notification
      showProtectionNotice('本站已禁用右键菜单');
    });
  }

  /* ============================================================
   * 3. F12 / DevTools 检测（仅提示，不阻止）
   * ============================================================ */
  if (config.detectDevTools) {
    document.addEventListener('keydown', function (e) {
      // F12
      if (e.key === 'F12' || e.keyCode === 123) {
        e.preventDefault();
        showProtectionNotice('本站已禁用开发者工具');
        return false;
      }

      // Ctrl+Shift+I / Cmd+Option+I
      if ((e.ctrlKey || e.metaKey) && e.shiftKey && (e.key === 'I' || e.key === 'i' || e.keyCode === 73)) {
        e.preventDefault();
        showProtectionNotice('本站已禁用开发者工具');
        return false;
      }

      // Ctrl+Shift+J / Cmd+Option+J
      if ((e.ctrlKey || e.metaKey) && e.shiftKey && (e.key === 'J' || e.key === 'j' || e.keyCode === 74)) {
        e.preventDefault();
        showProtectionNotice('本站已禁用开发者工具');
        return false;
      }

      // Ctrl+U (view source)
      if ((e.ctrlKey || e.metaKey) && (e.key === 'u' || e.key === 'U' || e.keyCode === 85)) {
        e.preventDefault();
        showProtectionNotice('本站已禁用查看源代码');
        return false;
      }
    });
  }

  /* ============================================================
   * Protection notice toast
   * ============================================================ */
  var noticeTimer = null;

  function showProtectionNotice(text) {
    if (noticeTimer) clearTimeout(noticeTimer);

    var el = document.getElementById('aksrt-protection-notice');
    if (!el) {
      el = document.createElement('div');
      el.id = 'aksrt-protection-notice';
      el.style.cssText =
        'position:fixed;bottom:20px;left:50%;transform:translateX(-50%);' +
        'background:rgba(0,0,0,0.75);color:#fff;padding:8px 20px;border-radius:8px;' +
        'font-size:13px;z-index:99999;transition:opacity 0.3s;pointer-events:none;';
      document.body.appendChild(el);
    }

    el.textContent = text;
    el.style.opacity = '1';

    noticeTimer = setTimeout(function () {
      el.style.opacity = '0';
    }, 2000);
  }

})();