src/components/Navbar.vue

<template>
  <div class="navbar">
    <router-link to="/home" class="navbar-brand">PT Tracker</router-link>
    <div class="navbar-nav">
      <router-link to="/home" class="navbar-item">首页</router-link>
      <router-link to="/torrents" class="navbar-item">种子</router-link>
      <router-link to="/forum" class="navbar-item">论坛</router-link>
      <el-dropdown @command="handleUserCommand">
        <span class="navbar-user">
          <el-avatar :size="32" :src="userAvatar">
            {{ username.charAt(0).toUpperCase() }}
          </el-avatar>
          <span class="username">{{ username }}</span>
          <el-icon><ArrowDown /></el-icon>
        </span>
        <template #dropdown>
          <el-dropdown-menu>
            <el-dropdown-item command="profile">
              <el-icon><User /></el-icon>
              个人资料
            </el-dropdown-item>
            <el-dropdown-item command="settings">
              <el-icon><Setting /></el-icon>
              设置
            </el-dropdown-item>
            <el-dropdown-item divided command="logout">
              <el-icon><SwitchButton /></el-icon>
              退出登录
            </el-dropdown-item>
          </el-dropdown-menu>
        </template>
      </el-dropdown>
    </div>
  </div>
</template>

<script>
import { computed } from 'vue'
import { useStore } from 'vuex'
import { useRouter } from 'vue-router'
import { ElMessageBox } from 'element-plus'
import {
  ArrowDown,
  User,
  Setting,
  SwitchButton
} from '@element-plus/icons-vue'

export default {
  name: 'Navbar',
  components: {
    ArrowDown,
    User,
    Setting,
    SwitchButton
  },
  setup() {
    const store = useStore()
    const router = useRouter()

    const username = computed(() => store.getters['auth/username'])
    const userAvatar = computed(() => store.getters['auth/avatar'])

    const handleUserCommand = async (command) => {
      switch (command) {
        case 'profile':
          router.push('/profile')
          break
        case 'settings':
          router.push('/settings')
          break
        case 'logout':
          try {
            await ElMessageBox.confirm('确定要退出登录吗？', '提示', {
              confirmButtonText: '确定',
              cancelButtonText: '取消',
              type: 'warning'
            })
            await store.dispatch('auth/logout')
            router.push('/login')
          } catch (error) {
            if (error !== 'cancel') {
              console.error('退出登录失败:', error)
            }
          }
          break
      }
    }

    return {
      username,
      userAvatar,
      handleUserCommand
    }
  }
}
</script>

<style lang="scss" scoped>
.navbar {
  background: #fff;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-brand {
  font-size: 20px;
  font-weight: 700;
  color: #409eff;
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.navbar-item {
  color: #606266;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
  
  &:hover {
    color: #409eff;
  }
}

.navbar-user {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
  transition: background-color 0.3s;
  
  &:hover {
    background-color: #f5f7fa;
  }
  
  .username {
    font-weight: 500;
    color: #303133;
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: 0 16px;
    
    .navbar-nav {
      gap: 16px;
    }
    
    .navbar-user .username {
      display: none;
    }
  }
}
</style>