import type {NavigationGuardWithThis, RouteLocationNormalized} from 'vue-router';
import type {UserState} from '@/stores/user'
import {useUserStore} from '@/stores/user'
import type {Store} from 'pinia';

const cookieName = 'loginStatus'
let userStore: Store | null = null



export const updateLoggedIn: NavigationGuardWithThis<undefined> = (_to) => {
  const loggedIn = getCookieValue(cookieName) === 'true'
  const store = getUserStore()

  store.$patch({ loggedIn })
}

export const redirectToLoginIfRequired: NavigationGuardWithThis<undefined> = (to, _from) => {
  const store = getUserStore()
  if(loginRequired(to) && !store.loggedIn) {
    return { name: 'home' }
  }
}

const getCookieValue = (cookieName: string): string => {
  // https://stackoverflow.com/questions/5639346/what-is-the-shortest-function-for-reading-a-cookie-by-name-in-javascript
  const cookieValue = document.cookie.match('(^|[^;]+)\\s*' + cookieName + '\\s*=\\s*([^;]+)')
  if (!cookieValue) {
    return ''
  }
  return cookieValue.pop() || '';
}

// Pina is not ready when router is called the first time by app.use(), so we need to load it here
const getUserStore = (): UserState & Store => {
  if (!userStore) {
    userStore = useUserStore()
  }
  return userStore as unknown as UserState & Store
}

const loginRequired = (to: RouteLocationNormalized) => {
  return !to.meta?.public
}



// export const unauthorizedAccess: NavigationGuardWithThis<undefined> = (to) => {
//   r loginRequired(to) && getCookieValue('loginStatus') !== 'true';
// }