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

const router = createRouter({
  history: createWebHistory(),
  routes: [
    {
      path: '/login',
      name: 'Login',
      component: () => import('@/views/Login.vue'),
      meta: { public: true },
    },
    {
      path: '/bind-wecom',
      name: 'BindWecom',
      component: () => import('@/views/BindWecom.vue'),
      meta: { public: true },
    },
    {
      path: '/bind-wechat',
      name: 'BindWechat',
      component: () => import('@/views/BindWechat.vue'),
      meta: { public: true },
    },
    {
      path: '/wecom-bind',
      name: 'WecomBind',
      component: () => import('@/views/WecomBind.vue'),
      meta: { public: true },
    },
    // Mobile routes (manager-facing)
    {
      path: '/m',
      component: () => import('@/components/MobileLayout.vue'),
      children: [
        { path: '', name: 'MobileHome', component: () => import('@/views/mobile/Home.vue') },
        { path: 'work', name: 'WorkCenter', component: () => import('@/views/mobile/WorkCenter.vue') },
        { path: 'visit/new', name: 'VisitForm', component: () => import('@/views/mobile/VisitForm.vue') },
        { path: 'visit/:id/edit', name: 'VisitEdit', component: () => import('@/views/mobile/VisitForm.vue') },
        { path: 'work-plan/new', name: 'WorkPlanForm', component: () => import('@/views/mobile/WorkPlanForm.vue') },
        { path: 'work-plan/:id/edit', name: 'WorkPlanEdit', component: () => import('@/views/mobile/WorkPlanForm.vue') },
        { path: 'mini-biz/new', name: 'MiniBusinessForm', component: () => import('@/views/mobile/MiniBusinessForm.vue') },
        { path: 'mini-biz/:id/edit', name: 'MiniBusinessEdit', component: () => import('@/views/mobile/MiniBusinessForm.vue') },
        { path: 'key-visit/new', name: 'KeyVisitForm', component: () => import('@/views/mobile/KeyVisitForm.vue') },
        { path: 'key-visit/:id/edit', name: 'KeyVisitEdit', component: () => import('@/views/mobile/KeyVisitForm.vue') },
        { path: 'note/new', name: 'DailyNoteForm', component: () => import('@/views/mobile/DailyNoteForm.vue') },
        { path: 'note/:id/edit', name: 'DailyNoteEdit', component: () => import('@/views/mobile/DailyNoteForm.vue') },
        { path: 'visits', name: 'VisitsList', component: () => import('@/views/mobile/VisitsList.vue') },
        { path: 'notes', name: 'NotesList', component: () => import('@/views/mobile/NotesList.vue') },
        { path: 'plans', name: 'PlansList', component: () => import('@/views/mobile/PlansList.vue') },
        { path: 'mini-biz', name: 'MiniBizList', component: () => import('@/views/mobile/MiniBizList.vue') },
        { path: 'key-visits', name: 'KeyVisitsList', component: () => import('@/views/mobile/KeyVisitsList.vue') },
        { path: 'leaves', name: 'LeavesList', component: () => import('@/views/mobile/LeavesList.vue') },
        { path: 'leave/new', name: 'LeaveForm', component: () => import('@/views/mobile/LeaveForm.vue') },
        { path: 'leave/:id/edit', name: 'LeaveEdit', component: () => import('@/views/mobile/LeaveForm.vue') },
      ],
    },
    // Desktop routes (director/leader-facing)
    {
      path: '/',
      component: () => import('@/components/DesktopLayout.vue'),
      children: [
        { path: '', name: 'Dashboard', component: () => import('@/views/desktop/Dashboard.vue') },
        { path: 'weekly-report', name: 'WeeklyReport', component: () => import('@/views/desktop/WeeklyReport.vue') },
        { path: 'light-board', name: 'LightBoard', component: () => import('@/views/desktop/LightBoard.vue') },
        { path: 'work-plans', name: 'WorkPlans', component: () => import('@/views/desktop/WorkPlans.vue') },
        { path: 'mini-business', name: 'MiniBusiness', component: () => import('@/views/desktop/MiniBusiness.vue') },
        { path: 'key-visits', name: 'KeyVisits', component: () => import('@/views/desktop/KeyVisits.vue') },
        { path: 'leaves', name: 'Leaves', component: () => import('@/views/desktop/Leaves.vue') },
        { path: 'workspace', name: 'ManagerWorkspace', component: () => import('@/views/desktop/ManagerWorkspace.vue') },
        { path: 'customers', name: 'CustomerManage', component: () => import('@/views/desktop/CustomerManage.vue') },
        { path: 'users', name: 'UserManage', component: () => import('@/views/desktop/UserManage.vue') },
        { path: 'audit-log', name: 'AuditLog', component: () => import('@/views/desktop/AuditLog.vue') },
        { path: 'settings', name: 'Settings', component: () => import('@/views/desktop/Settings.vue') },
      ],
    },
  ],
})

router.beforeEach((to, _from, next) => {
  const auth = useAuthStore()

  // Handle WeChat Work OAuth silent login callback: ?token=JWT
  // Only strip the token if it's a valid JWT — bind tokens (UUID hex) must
  // survive so pages like WecomBind can read them.
  const tokenParam = to.query.token as string
  if (tokenParam && tokenParam.split('.').length === 3) {
    // Save token to auth store (the JWT contains user_id, name, role, theme)
    try {
      const payload = JSON.parse(atob(tokenParam.split('.')[1]))
      auth.saveLogin({
        access_token: tokenParam,
        user_id: payload.user_id,
        name: payload.name,
        role: payload.role,
        theme: payload.theme,
      })
      // Remove token from URL only on successful JWT decode
      const cleanQuery = { ...to.query }
      delete cleanQuery.token
      next({ path: to.path, query: cleanQuery, replace: true })
      return
    } catch (_) { /* invalid JWT — leave token for page to handle */ }
  }

  if (to.meta.public) {
    next()
    return
  }
  if (!auth.isLoggedIn) {
    next('/login')
    return
  }

  // Auto-redirect on FIRST entry only (no previous route = fresh page load)
  // Don't interfere with manual navigation (user clicked switch button)
  const viewOverride = to.query.view as string
  if (!viewOverride && !_from.name) {
    const onMobile = isMobile()
    if (onMobile && to.path === '/') {
      next('/m')
      return
    }
    if (!onMobile && to.path.startsWith('/m')) {
      next('/')
      return
    }
  }

  next()
})

export default router