import { ref, computed } from 'vue'

export interface PlatformUser {
  userId: string
  userName: string
  userRole: string
  tenantId: string
  orgId: string
  token?: string
}

export const ROLE_LABELS: Record<string, string> = {
  ADMIN: '系统管理员', RECEPTIONIST: '受理员', ASSESSOR: '评估员',
  PLANNER: '方案制定员', DISPATCHER: '调度员', STAFF: '服务人员',
  SETTLER: '结算员', SUPERVISOR: '监管员', REVIEWER: '复核员',
}

const STORAGE_KEY = 'hss_platform_user'
const TOKEN_KEY = 'hss_token'

const currentUser = ref<PlatformUser | null>(null)

function loadUser(): PlatformUser | null {
  try {
    const stored = localStorage.getItem(STORAGE_KEY)
    return stored ? JSON.parse(stored) : null
  } catch { return null }
}

function saveUser(user: PlatformUser) {
  localStorage.setItem(STORAGE_KEY, JSON.stringify(user))
  if (user.token) localStorage.setItem(TOKEN_KEY, user.token)
  currentUser.value = user
}

function clearUser() {
  localStorage.removeItem(STORAGE_KEY)
  localStorage.removeItem(TOKEN_KEY)
  currentUser.value = null
}

export function usePlatformAuth() {
  if (!currentUser.value) {
    currentUser.value = loadUser()
  }

  const isLoggedIn = computed(() => !!currentUser.value)
  const user = computed(() => currentUser.value)

  /** 保存登录/注册返回的用户信息 */
  function setAuth(data: { token: string; userId: number | string; name: string; role: string }) {
    saveUser({
      userId: String(data.userId),
      userName: data.name,
      userRole: data.role,
      tenantId: '1',
      orgId: '1',
      token: data.token,
    })
  }

  function logout() { clearUser() }

  function getToken(): string {
    return localStorage.getItem(TOKEN_KEY) || currentUser.value?.token || ''
  }

  function getAuthHeaders(): Record<string, string> {
    const token = getToken()
    const u = currentUser.value
    return {
      'Authorization': token ? 'Bearer ' + token : '',
      'X-Tenant-Id': u?.tenantId || '1',
      'X-Org-Id': u?.orgId || '1',
      'Content-Type': 'application/json',
    }
  }

  return { isLoggedIn, user, setAuth, logout, getAuthHeaders, getToken }
}