// 客户端状态管理组合式函数
export default function useClientState() {
  const isClient = ref(false)
  
  // 用户信息
  const userInfo = ref({
    name: '管理员',
    role: '系统管理员'
  })
  
  // 认证状态
  const isAuthenticated = ref(false)
  
  // 初始化客户端状态
  const initClientState = () => {
    if (process.client) {
      isClient.value = true
      
      // 加载用户信息
      const adminUser = localStorage.getItem('adminUser')
      const authStatus = localStorage.getItem('isAuthenticated')
      
      if (authStatus === 'true' && adminUser) {
        try {
          const user = JSON.parse(adminUser)
          userInfo.value = {
            name: user.full_name || user.name || '管理员',
            role: user.role === 'admin' ? '管理员' : user.role || '系统管理员'
          }
          isAuthenticated.value = true
        } catch (error) {
          console.error('解析用户信息失败:', error)
          // 重置状态
          isAuthenticated.value = false
          userInfo.value = {
            name: '管理员',
            role: '系统管理员'
          }
        }
      }
    }
  }
  
  // 更新用户信息
  const updateUserInfo = (newUserInfo: { name?: string; role?: string }) => {
    if (process.client) {
      userInfo.value = { ...userInfo.value, ...newUserInfo }
      
      // 保存到localStorage
      const adminUser = {
        name: userInfo.value.name,
        role: userInfo.value.role
      }
      localStorage.setItem('adminUser', JSON.stringify(adminUser))
    }
  }
  
  // 登录
  const login = (userData: { name: string; role: string }) => {
    if (process.client) {
      isAuthenticated.value = true
      userInfo.value = userData
      
      localStorage.setItem('adminUser', JSON.stringify(userData))
      localStorage.setItem('isAuthenticated', 'true')
    }
  }
  
  // 登出
  const logout = () => {
    if (process.client) {
      isAuthenticated.value = false
      userInfo.value = {
        name: '管理员',
        role: '系统管理员'
      }
      
      localStorage.removeItem('adminUser')
      localStorage.removeItem('isAuthenticated')
      localStorage.removeItem('user')
    }
  }
  
  // 设置存储监听器
  const setupStorageListener = () => {
    if (process.client) {
      const handleStorageChange = (e: StorageEvent) => {
        if (e.key === 'adminUser' || e.key === 'isAuthenticated') {
          initClientState()
        }
      }
      
      window.addEventListener('storage', handleStorageChange)
      
      // 返回清理函数
      return () => {
        window.removeEventListener('storage', handleStorageChange)
      }
    }
  }
  
  return {
    isClient: readonly(isClient),
    userInfo: readonly(userInfo),
    isAuthenticated: readonly(isAuthenticated),
    initClientState,
    updateUserInfo,
    login,
    logout,
    setupStorageListener
  }
}