import {
  createRouter,
  createWebHistory,
  type RouteLocationNormalized,
} from 'vue-router'
import HomePage from '@/pages/HomePage.vue'
import ComposePage from '@/pages/ComposePage.vue'
import AboutPage from '@/pages/AboutPage.vue'
import ContactPage from '@/pages/ContactPage.vue'
import PrivacyPolicyPage from '@/pages/PrivacyPolicyPage.vue'
import TermsOfServicePage from '@/pages/TermsOfServicePage.vue'
import RegisterPage from '@/pages/RegisterPage.vue'
import LoginPage from '@/pages/LoginPage.vue'
import ForgotPasswordPage from '@/pages/ForgotPasswordPage.vue'
import ResetPasswordPage from '@/pages/ResetPasswordPage.vue'
import ChangePasswordPage from '@/pages/ChangePasswordPage.vue'
import ChangeEmailPage from '@/pages/ChangeEmailPage.vue'
import ConfirmEmailChangePage from '@/pages/ConfirmEmailChangePage.vue'
import OrdersPage from '@/pages/OrdersPage.vue'
import EditOrderPage from '@/pages/EditOrderPage.vue'
import AdminPage from '@/pages/AdminPage.vue'
import PaymentRedirect from '@/pages/PaymentRedirect.vue'
import GuestCheckoutPage from '@/pages/GuestCheckoutPage.vue'
import GuestPaymentRedirect from '@/pages/GuestPaymentRedirect.vue'
import GuestOrderPage from '@/pages/GuestOrderPage.vue'
import { useAuthStore } from '@/stores/authStore'
import { getActivePinia } from 'pinia'

export function scrollBehavior(
  to: RouteLocationNormalized,
  _from: RouteLocationNormalized,
  savedPosition: { left: number; top: number } | null,
) {
  if (savedPosition) {
    return savedPosition
  }
  if (to.hash) {
    return { el: to.hash, top: 0, behavior: 'smooth' as const }
  }
  return { top: 0, left: 0 }
}

const router = createRouter({
  history: createWebHistory(import.meta.env.BASE_URL),
  scrollBehavior,
  routes: [
    {
      path: '/',
      name: 'home',
      component: HomePage,
    },
    {
      path: '/compose',
      name: 'compose',
      component: ComposePage,
      meta: { requiresAuth: true },
    },
    {
      path: '/orders',
      name: 'orders',
      component: OrdersPage,
      meta: { requiresAuth: true },
    },
    {
      path: '/bestallning/:orderId/redigera',
      name: 'edit-order',
      component: EditOrderPage,
      meta: { requiresAuth: true },
    },
    {
      path: '/andra-losenord',
      name: 'change-password',
      component: ChangePasswordPage,
      meta: { requiresAuth: true },
    },
    {
      path: '/andra-epost',
      name: 'change-email',
      component: ChangeEmailPage,
      meta: { requiresAuth: true },
    },
    {
      path: '/admin',
      name: 'admin',
      component: AdminPage,
      meta: { requiresAuth: true, requiresAdmin: true },
    },
    {
      path: '/betalning/:orderId',
      name: 'payment',
      component: PaymentRedirect,
      meta: { requiresAuth: true },
    },
    {
      // Guest checkout — no account required to place and pay for an order.
      path: '/gast-bestallning',
      name: 'guest-checkout',
      component: GuestCheckoutPage,
    },
    {
      // Guest payment page — token carried in query so refresh keeps the session.
      path: '/gast-betalning/:orderId',
      name: 'guest-payment',
      component: GuestPaymentRedirect,
    },
    {
      // Magic-link landing — order status by opaque token.
      path: '/gast-order/:token',
      name: 'guest-order',
      component: GuestOrderPage,
    },
    {
      path: '/registrera',
      name: 'register',
      component: RegisterPage,
      meta: { guestOnly: true },
    },
    {
      path: '/logga-in',
      name: 'login',
      component: LoginPage,
      meta: { guestOnly: true },
    },
    {
      path: '/glomt-losenord',
      name: 'forgot-password',
      component: ForgotPasswordPage,
      meta: { guestOnly: true },
    },
    {
      path: '/aterstall-losenord',
      name: 'reset-password',
      component: ResetPasswordPage,
      meta: { guestOnly: true },
    },
    {
      path: '/bekrafta-epost',
      name: 'confirm-email-change',
      component: ConfirmEmailChangePage,
    },
    {
      path: '/om-oss',
      name: 'about',
      component: AboutPage,
    },
    {
      path: '/om',
      redirect: '/om-oss',
    },
    {
      path: '/kontakt',
      name: 'contact',
      component: ContactPage,
    },
    {
      path: '/integritetspolicy',
      name: 'privacy',
      component: PrivacyPolicyPage,
    },
    {
      path: '/villkor',
      name: 'terms',
      component: TermsOfServicePage,
    },
  ],
})

router.beforeEach((to) => {
  if (!getActivePinia()) return

  const auth = useAuthStore()
  const authenticated = auth.isAuthenticated && !auth.isTokenExpired()

  if (to.meta.guestOnly && authenticated) return { name: 'home' }
  if (to.meta.requiresAuth && !authenticated) {
    if (auth.isAuthenticated) auth.logout()
    return { name: 'login', query: { redirect: to.fullPath } }
  }
  if (to.meta.requiresAdmin && !auth.isAdmin) return { name: 'home' }
})

export default router