import { createRouter, createWebHistory } from 'vue-router'
import routes from './routes'
import { getToken } from '@/utils/token'
import { useUserStore } from '@/stores/user'
import { usePermissionStore } from '@/stores/permission'

const router = createRouter({
  history: createWebHistory(import.meta.env.BASE_URL),
  routes,
})

// 权限码到路由路径的映射
const permRouteMap: Record<string, string> = {
  'business:member:view': '/member/list',
  'business:memberCard:view': '/member/card',
  'business:groupCourse:view': '/groupCourse/list',
  'business:groupCourseType:view': '/groupCourse/type',
  'business:groupCourseRecommend:view': '/groupCourse/recommend',
  'business:checkIn:view': '/checkIn',
  'business:dataCount:view': '/datacount',
  'system:log:view': '/operationLog',
  'system:user:view': '/system/account',
  'system:role:view': '/system/role',
  'system:dict:view': '/system/dict',
}

let permissionFetched = false

router.beforeEach(async (to, _from, next) => {
  const token = getToken()

  // 登录页：已登录则跳转仪表盘
  if (to.path === '/login') {
    if (token) {
      next('/dashboard')
      return
    }
    next()
    return
  }

  // 未登录则跳转登录
  if (!token) {
    next('/login')
    return
  }

  const userStore = useUserStore()
  const permStore = usePermissionStore()

  // 首次进入时拉取权限并生成路由
  if (!permissionFetched) {
    try {
      await userStore.fetchCurrentUser()
      permissionFetched = true
    } catch {
      next('/login')
      return
    }
  }

  // 仪表盘无需权限检查
  if (to.path === '/dashboard') {
    next()
    return
  }

  // 查找该路径需要的权限
  const requiredPerm = Object.entries(permRouteMap).find(([, path]) => path === to.path)?.[0]

  if (requiredPerm && !userStore.hasPermission(requiredPerm)) {
    next('/dashboard')
    return
  }

  next()
})

export default router