import { createRouter, createWebHistory } from 'vue-router'
import { useAuthStore } from '@/stores/useAuthStore'

const routes = [
  {
    path: '/login',
    name: 'login',
    component: () => import('@/views/Login.vue'),
    meta: { title: '登录', requiresAuth: false }
  },
  {
    path: '/',
    component: () => import('@/layouts/MainLayout.vue'),
    redirect: '/overview',
    meta: { requiresAuth: true },
    children: [
      {
        path: 'overview',
        name: 'overview',
        component: () => import('@/views/Overview.vue'),
        meta: { title: '概览', requiresAuth: true }
      },
      {
        path: 'documents',
        name: 'documents',
        component: () => import('@/views/Documents.vue'),
        meta: { title: '文档管理', requiresAuth: true }
      },
      {
        path: 'ingest',
        name: 'ingest',
        component: () => import('@/views/Ingest.vue'),
        meta: { title: '文档入库', requiresAuth: true }
      },
      {
        path: 'search',
        name: 'search',
        component: () => import('@/views/Search.vue'),
        meta: { title: '检索测试台', requiresAuth: true }
      },
      {
        path: 'categories',
        name: 'categories',
        component: () => import('@/views/Categories.vue'),
        meta: { title: '类目列表', requiresAuth: true }
      },
      {
        path: 'settings',
        name: 'settings',
        component: () => import('@/views/Settings.vue'),
        meta: { title: '设置', requiresAuth: true }
      },
      {
        path: 'api-docs',
        name: 'api-docs',
        component: () => import('@/views/ApiDocs.vue'),
        meta: { title: 'API 说明', requiresAuth: true }
      },
      {
        path: 'users',
        name: 'users',
        component: () => import('@/views/Users.vue'),
        meta: { title: '用户管理', requiresAuth: true, requiresAdmin: true }
      }
    ]
  },
  {
    path: '/:pathMatch(.*)*',
    name: 'not-found',
    redirect: '/overview'
  }
]

const router = createRouter({
  history: createWebHistory('/admin/'),
  routes,
  scrollBehavior() {
    return { top: 0 }
  }
})

// 全局前置守卫：未登录跳 /login；已登录访问 /login 跳 /overview
router.beforeEach((to) => {
  const authStore = useAuthStore()
  const title = to.meta?.title
  if (title) {
    document.title = `${title} - QMDSearch 知识库后台`
  } else {
    document.title = 'QMDSearch 知识库后台'
  }

  if (to.meta?.requiresAuth && !authStore.isAuthenticated) {
    return { name: 'login', query: { redirect: to.fullPath } }
  }

  if (to.meta?.requiresAdmin && !authStore.isAdmin) {
    return { name: 'overview' }
  }

  if (to.name === 'login' && authStore.isAuthenticated) {
    return { name: 'overview' }
  }

  return true
})

export default router