// 公共页眉组件 - Vue 3
(function() {
  console.log('[Navbar] 脚本加载');

  function injectStyles() {
    if (document.getElementById('navbar-styles')) return;
    const styles = `
      .navbar-component { position: fixed; top: 0; left: 0; right: 0; height: 60px; background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%); color: white; display: flex; align-items: center; justify-content: space-between; padding: 0 24px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); z-index: 10000; }
      .navbar-component .navbar-title { font-size: 18px; font-weight: 600; margin: 0; }
      .navbar-component .navbar-user { display: flex; align-items: center; gap: 12px; }
      .navbar-component .user-info { display: flex; align-items: center; gap: 8px; }
      .navbar-component .avatar { width: 32px; height: 32px; border-radius: 50%; background: rgba(255,255,255,0.2); display: flex; align-items: center; justify-content: center; font-size: 14px; }
      .navbar-component .logout-btn { background: rgba(255,255,255,0.2); border: none; color: white; padding: 6px 12px; border-radius: 6px; cursor: pointer; margin-left: 12px; }
      .navbar-component .logout-btn:hover { background: rgba(255,255,255,0.3); }
      .navbar-component .admin-badge { margin-left: 8px; font-size: 12px; background: rgba(255,255,255,0.3); padding: 2px 8px; border-radius: 10px; }
      @media (max-width: 768px) {
        .navbar-component { padding: 0 16px; }
        .navbar-component .navbar-title { font-size: 16px; }
      }
    `;
    const styleEl = document.createElement('style');
    styleEl.id = 'navbar-styles';
    styleEl.textContent = styles;
    document.head.appendChild(styleEl);
    console.log('[Navbar] 样式已注入');
  }

  const installNavbar = (app) => {
    console.log('[Navbar] installNavbar called');
    injectStyles();

    const NavbarComponent = {
      name: 'NavbarComponent',
      props: {
        title: { type: String, default: '宇之然内容创作平台' },
        username: { type: String, default: '' },
        isAdmin: { type: Boolean, default: false },
        onLogout: { type: Function, default: null }
      },
      template: `
        <nav class="navbar-component">
          <div class="navbar-content" style="display: flex; justify-content: space-between; align-items: center; width: 100%;">
            <h1 class="navbar-title">{{ title }}</h1>
            <div class="navbar-user">
              <div class="user-info">
                <div class="avatar">{{ username ? username.charAt(0).toUpperCase() : '?' }}</div>
                <span v-if="username">{{ username }}</span>
              </div>
              <span v-if="isAdmin" class="admin-badge">管理员</span>
              <button class="logout-btn" @click="handleLogout">退出</button>
            </div>
          </div>
        </nav>
      `,
      methods: {
        handleLogout() {
          if (this.onLogout) {
            this.onLogout();
          } else {
            localStorage.removeItem('authToken');
            localStorage.removeItem('userRole');
            localStorage.removeItem('currentUser');
            window.location.href = '/login.html';
          }
        }
      }
    };

    app.component('navbar-component', NavbarComponent);
    console.log('[Navbar] 组件已注册');
    return app;
  };

  window.installNavbar = installNavbar;
  console.log('[Navbar] 脚本已加载');
})();