/**
 * @jest-environment jsdom
 */

import Cookies from 'js-cookie'
import { session, SessionOptions } from '../session'

jest.useFakeTimers()

describe('session', () => {
  beforeEach(() => {
    jest.clearAllTimers()

    window.localStorage.clear()
    Cookies.remove('ko_sid')
  })

  test('init: starts a fresh session', () => {
    const now = new Date().getTime()
    expect(session.sessionId()).toBeUndefined()

    session.init({} as SessionOptions)
    const existing = session.sessionId()

    expect(existing).not.toBeUndefined()
    expect(existing?.id).toEqual(now.toString())
    expect(existing?.lastTouched).toEqual(now)
  })

  test('stores session ids in cookies and local storage', () => {
    const sesh = session.fetch({} as SessionOptions)
    expect(Cookies.get('ko_sid')).toEqual(JSON.stringify(sesh))
    expect(window.localStorage.getItem('ko_sid')).toEqual(JSON.stringify(sesh))
  })

  test('stores session ids in cookies and local storage based on domain options', () => {
    const sesh = session.fetch({
      cookie_defaults: {
        domain: 'koala.live'
      }
    } as SessionOptions)

    // this is not the same domain as we're in, so the cookie should not be set
    expect(Cookies.get('ko_sid')).toBeUndefined()

    // local storage is unaffected
    expect(window.localStorage.getItem('ko_sid')).toEqual(JSON.stringify(sesh))
  })

  test('fetch creates a new session if does not exist', () => {
    const now = new Date().getTime()
    expect(session.sessionId()).toBeUndefined()

    const sesh = session.fetch({} as SessionOptions)
    expect(sesh).not.toBeUndefined()
    expect(sesh?.id).toEqual(now.toString())
    expect(sesh?.lastTouched).toEqual(now)
  })

  test('expires session after 24h', () => {
    const yesterday = new Date().getTime() - 1000 * 60 * 60 * 25
    const aFewMinutesAgo = new Date().getTime() - 1000 * 60 * 5

    const now = new Date().getTime()
    Cookies.set('ko_sid', JSON.stringify({ id: yesterday.toString(), lastTouched: aFewMinutesAgo }))

    expect(session.sessionId()).not.toBeUndefined()

    const sesh = session.fetch({} as SessionOptions)
    expect(sesh.id).toEqual(now.toString())
    expect(sesh.lastTouched).toEqual(now)
  })

  test('does not renew session on access if valid', () => {
    const anHourAgo = new Date().getTime() - 1000 * 60 * 60 * 1
    const fiveMinutesAgo = new Date().getTime() - 1000 * 60 * 5

    const now = new Date().getTime()
    Cookies.set('ko_sid', JSON.stringify({ id: anHourAgo.toString(), lastTouched: fiveMinutesAgo }))

    expect(session.sessionId()).not.toBeUndefined()

    const sesh = session.fetch({} as SessionOptions)
    expect(sesh.id).toEqual(anHourAgo.toString())
    expect(sesh.lastTouched).toEqual(now)
  })

  test('renews stale sessions on access', () => {
    const anHourAgo = new Date().getTime() - 1000 * 60 * 60 * 1
    const thirtyFiveMinutesAgo = new Date().getTime() - 1000 * 60 * 35

    const now = new Date().getTime()
    Cookies.set('ko_sid', JSON.stringify({ id: anHourAgo.toString(), lastTouched: thirtyFiveMinutesAgo }))

    expect(session.sessionId()).not.toBeUndefined()

    const sesh = session.fetch({} as SessionOptions)
    expect(sesh.id).toEqual(now.toString())
    expect(sesh.lastTouched).toEqual(now)
  })

  test('touches the session every time it is fetched', () => {
    const then = new Date().getTime() - 10_000
    Cookies.set('ko_sid', JSON.stringify({ id: then.toString(), lastTouched: then }))

    const now = new Date().getTime()

    const sesh = session.fetch({} as SessionOptions)
    expect(sesh.id).toEqual(then.toString())
    expect(sesh.lastTouched).toEqual(now)
  })
})