import PocketBase from 'pocketbase'
import { POCKETBASE_URL, PB_ADMIN_EMAIL, PB_ADMIN_PASSWORD } from './pocketbase-config.js'

const COLLECTION = 'travellers'

let pb = null
let authPromise = null

function getClient() {
  if (!pb) {
    pb = new PocketBase(POCKETBASE_URL)
    // Main process may receive overlapping IPC calls (e.g. React Strict Mode).
    // Default auto-cancel would abort duplicate in-flight PocketBase requests.
    pb.autoCancellation(false)
  }
  return pb
}

function parseEntry(r) {
  return {
    id: r.emr_id,
    name: r.name ?? '',
    location: r.location ?? '',
    countryISO: r.country_iso ?? '',
    countriesISO: r.countries_iso ?? [],
    status: r.status ?? '',
    departure: r.departure ?? '',
    arrival: r.arrival ?? '',
    created: r.created,
    updated: r.updated,
  }
}

export async function ensureAuth() {
  const client = getClient()
  if (client.authStore.isValid) return

  if (authPromise) {
    await authPromise
    return
  }

  // PocketBase v0.23+ removed /api/admins/*; superusers authenticate as a collection.
  authPromise = client
    .collection('_superusers')
    .authWithPassword(PB_ADMIN_EMAIL, PB_ADMIN_PASSWORD)
  try {
    await authPromise
  } catch (err) {
    authPromise = null
    throw err
  }
}

export async function fetchEntries() {
  await ensureAuth()
  const list = await getClient().collection(COLLECTION).getFullList({ sort: '-created' })
  return list.map(parseEntry)
}