<template>
  <div class="header">
    <!-- 左侧区域 -->
    <div class="header-left">
      <!-- 折叠按钮 -->
      <el-button
        type="text"
        class="collapse-btn"
        @click="toggleSidebar"
      >
        <el-icon>
          <Fold v-if="!appStore.sidebarCollapsed" />
          <Expand v-else />
        </el-icon>
      </el-button>
    </div>
    
    <!-- 右侧区域 -->
    <div class="header-right">
      <!-- 全屏按钮 -->
      <el-tooltip content="全屏" placement="bottom">
        <el-button
          type="text"
          class="header-btn"
          @click="toggleFullscreen"
        >
          <el-icon>
            <FullScreen />
          </el-icon>
        </el-button>
      </el-tooltip>
      
      <!-- 用户信息 -->
      <el-dropdown @command="handleCommand">
        <div class="user-info">
          <el-avatar
            :size="32"
            :src="userStore.avatar"
            class="user-avatar"
          >
            <el-icon><User /></el-icon>
          </el-avatar>
          <span class="username">{{ userStore.username }}</span>
          <el-icon class="dropdown-icon">
            <ArrowDown />
          </el-icon>
        </div>
        
        <template #dropdown>
          <el-dropdown-menu>
            <el-dropdown-item command="profile">
              <el-icon><User /></el-icon>
              个人中心
            </el-dropdown-item>
            <el-dropdown-item command="settings">
              <el-icon><Setting /></el-icon>
              系统设置
            </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 setup lang="ts">
import { ElMessage, ElMessageBox } from 'element-plus'
import { useRouter } from 'vue-router'
import { useUserStore } from '@/stores/modules/user'
import { useAppStore } from '@/stores/modules/app'

const router = useRouter()
const userStore = useUserStore()
const appStore = useAppStore()

// 切换侧边栏折叠状态
const toggleSidebar = () => {
  appStore.toggleSidebar()
}

// 切换全屏
const toggleFullscreen = () => {
  if (!document.fullscreenElement) {
    document.documentElement.requestFullscreen()
  } else {
    document.exitFullscreen()
  }
}

// 处理下拉菜单命令
const handleCommand = async (command: string) => {
  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 userStore.logout()
        ElMessage.success('退出成功')
      } catch (error) {
        // 用户取消退出
      }
      break
  }
}
</script>

<style lang="scss" scoped>
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  
  .header-left {
    display: flex;
    align-items: center;
    
    .collapse-btn {
      font-size: 18px;
      color: var(--el-text-color-regular);
      
      &:hover {
        color: var(--el-color-primary);
      }
    }
  }
  
  .header-right {
    display: flex;
    align-items: center;
    
    .header-btn {
      margin-right: 16px;
      font-size: 16px;
      color: var(--el-text-color-regular);
      
      &:hover {
        color: var(--el-color-primary);
      }
    }
    
    .user-info {
      display: flex;
      align-items: center;
      cursor: pointer;
      padding: 8px 12px;
      border-radius: 4px;
      transition: background-color 0.3s;
      
      &:hover {
        background-color: var(--el-color-primary-light-9);
      }
      
      .user-avatar {
        margin-right: 8px;
      }
      
      .username {
        margin-right: 4px;
        font-size: 14px;
        color: var(--el-text-color-primary);
      }
      
      .dropdown-icon {
        font-size: 12px;
        color: var(--el-text-color-secondary);
      }
    }
  }
}
</style>