// 公共导航组件定义（使用 render 函数，兼容 prod 版 Vue）
const NavigationComponent = {
  name: 'NavigationComponent',
  props: {
    currentPage: {
      type: String,
      required: true,
      validator: (value) => ['dashboard', 'topics', 'logs', 'users', 'admin'].includes(value)
    },
    isAdmin: {
      type: Boolean,
      default: false
    }
  },
  render() {
    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' }
      ] : [])
    ];

    const createSidebarBtn = (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(''));
    };

    const createMobileBtn = (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);
    };

    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(createSidebarBtn))
      ]),
      h('nav', { class: 'mobile-nav' }, mobileItems.map(createMobileBtn))
    ]);
  }
};

function injectNavigationStyles() {
  if (document.getElementById('navigation-styles')) 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; }
    }
    undefined
    body > #app > .navigation-wrapper + .main-content { margin-left: 180px !important; }
    @media (max-width: 768px) {
      body > #app > .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);
}

function installNavigation(app) {
  injectNavigationStyles();
  app.component('navigation-component', NavigationComponent);
  app.config.globalProperties.$redirectToPage = (path) => { window.location.href = path; };
  return app;
}

if (typeof window !== 'undefined') {
  window.NavigationComponent = NavigationComponent;
  window.installNavigation = installNavigation;
}
if (typeof module !== 'undefined' && module.exports) {
  module.exports = { NavigationComponent, installNavigation };
}
// 自动调整 main-content 边距
(function adjustLayout() {
  // 等待DOM加载
  const check = () => {
    const main = document.querySelector('.main-content');
    if (main) {
      // 检测是否有导航组件
      const hasSidebar = document.querySelector('.navigation-wrapper .sidebar') !== null;
      if (hasSidebar) {
        main.style.marginLeft = '180px';
      } else {
        main.style.marginLeft = '0';
      }
    }
    // 移动端调整
    const mobileNav = document.querySelector('.navigation-wrapper .mobile-nav');
    if (mobileNav) {
      main.style.paddingBottom = '60px';
    }
  };
  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', check);
  } else {
    check();
  }
  // Vue 挂载后再次调整（通过全局API）
  if (window.Vue) {
    window.Vue.mixin({
      mounted() {
        setTimeout(check, 0);
      }
    });
  }
})();
// 运行时检查（仅开发环境）
if (typeof window !== 'undefined') {
  window.addEventListener('load', () => {
    setTimeout(() => {
      const nav = document.querySelector('.navigation-wrapper');
      if (!nav) {
        console.warn('[NavigationComponent] 未找到 .navigation-wrapper 元素，可能未正确渲染');
      } else {
        console.log('[NavigationComponent] 已渲染');
      }
    }, 100);
  });
}