// 公共导航组件（调试版）
const NavigationComponent = {
  name: 'NavigationComponent',
  props: {
    currentPage: { type: String, required: true },
    isAdmin: { type: Boolean, default: false }
  },
  mounted() {
    console.log('[NavigationComponent] 已挂载');
    console.log('[NavigationComponent] currentPage:', this.currentPage, 'isAdmin:', this.isAdmin);
  },
  render() {
    console.log('[NavigationComponent] render called');
    const h = this.$createElement;
    const navigate = (page) => this.$emit('navigate', page === 'dashboard' ? '/' : page + '.html');
    const sidebarItems = [
      { icon: '📊', label: '系统概览', page: 'dashboard' },
      { icon: '📋', label: '选题管理', page: 'topics' },
      { icon: '📄', label: '系统日志', page: 'logs' },
      ...(this.isAdmin ? [{ icon: '👥', label: '用户管理', page: 'users' }, { icon: '⚙️', label: '系统管理', page: 'admin' }] : [])
    ];
    const mobileItems = [
      { icon: '📊', label: '', page: 'dashboard' },
      { icon: '📋', label: '选题', page: 'topics' },
      { icon: '📄', label: '日志', page: 'logs' },
      ...(this.isAdmin ? [{ icon: '👥', label: '用户', page: 'users' }, { icon: '⚙️', label: '系统', page: 'admin' }] : [])
    ];
    return h('div', { class: 'navigation-wrapper' }, [
      h('aside', { class: 'sidebar' }, [
        h('div', { class: 'sidebar-header' }, [h('h3', '宇之然平台')]),
        h('nav', { class: 'sidebar-nav' }, sidebarItems.map(item => {
          const isActive = this.currentPage === item.page;
          return h('button', { class: isActive ? 'sidebar-btn active' : 'sidebar-btn', on: { click: () => navigate(item.page) } }, [item.icon, ' ', item.label].join(''));
        }))
      ]),
      h('nav', { class: 'mobile-nav' }, mobileItems.map(item => {
        const isActive = this.currentPage === item.page;
        const content = item.label ? [item.icon, item.label].join('') : item.icon;
        return h('button', { class: isActive ? 'mobile-nav-btn active' : 'mobile-nav-btn', on: { click: () => navigate(item.page) } }, content);
      }))
    ]);
  }
};

function injectNavigationStyles() {
  if (document.getElementById('navigation-styles')) {
    console.log('[Nav] 样式已存在，跳过注入');
    return;
  }
  const styles = `
    .navigation-wrapper { position: relative; }
    .navigation-wrapper .sidebar {
      width: 180px; background: white; padding: 12px; box-shadow: 2px 0 8px rgba(0,0,0,0.05);
      position: fixed; left: 0; top: 60px; bottom: 0; overflow-y: auto; z-index: 9999;
    }
    .navigation-wrapper .sidebar-header { padding: 12px 8px 16px; border-bottom: 1px solid #ebeef5; margin-bottom: 12px; }
    .navigation-wrapper .sidebar-header h3 { margin: 0; font-size: 16px; font-weight: 600; color: #303133; }
    .navigation-wrapper .sidebar-btn {
      width: 100%; text-align: left; padding: 10px 12px; border: none; background: transparent; border-radius: 8px;
      margin-bottom: 6px; cursor: pointer; transition: all 0.3s; color: #606266; font-size: 14px; display: flex; align-items: center; gap: 6px;
    }
    .navigation-wrapper .sidebar-btn:hover { background: #f5f7fa; color: #409eff; }
    .navigation-wrapper .sidebar-btn.active { background: #ecf5ff; color: #409eff; font-weight: 600; }
    .navigation-wrapper .mobile-nav {
      display: none; position: fixed; bottom: 0; left: 0; right: 0; background: white;
      box-shadow: 0 -2px 8px rgba(0,0,0,0.1); padding: 8px 0; z-index: 1000; justify-content: space-around;
    }
    .navigation-wrapper .mobile-nav-btn {
      flex: 1; border: none; background: transparent; padding: 10px 4px; text-align: center;
      font-size: 11px; color: #606266; cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 2px;
    }
    .navigation-wrapper .mobile-nav-btn:hover { color: #409eff; }
    .navigation-wrapper .mobile-nav-btn.active { color: #409eff; font-weight: 600; }
    @media (max-width: 768px) { .navigation-wrapper .sidebar { display: none !important; } .navigation-wrapper .mobile-nav { display: flex !important; } }
    @media (min-width: 769px) { .navigation-wrapper .mobile-nav { display: none !important; } }
    .navigation-wrapper + .main-content { margin-left: 180px !important; }
    @media (max-width: 768px) { .navigation-wrapper + .main-content { margin-left: 0 !important; padding-bottom: 60px !important; } }
  `;
  const styleEl = document.createElement('style');
  styleEl.id = 'navigation-styles';
  styleEl.textContent = styles;
  document.head.appendChild(styleEl);
  console.log('[Nav] 样式已注入');
}

function installNavigation(app) {
  console.log('[Nav] installNavigation called');
  injectNavigationStyles();
  app.component('navigation-component', NavigationComponent);
  console.log('[Nav] 组件已注册');
  return app;
}

window.NavigationComponent = NavigationComponent;
window.installNavigation = installNavigation;
console.log('[Nav] 脚本已加载');