// @flow

import type { AsyncStorage } from './storage'

import { getData, updateStorage } from './storage'

export type webIdOidcSession = {

idp: string,

webId: string,

accessToken: string,

idToken: string,

clientId: string,

sessionKey: string,

}

export type Session = webIdOidcSession

export async function getSession(storage: AsyncStorage): Promise<?Session> {

const data = await getData(storage)

return data.session || null

}

export function saveSession(

storage: AsyncStorage

): (session: Session) => Promise<Session> {

return async (session) => {

const data = await updateStorage(storage, (data) => ({ ...data, session }))

return data.session

}

}

export async function clearSession(storage: AsyncStorage): Promise<void> {

await updateStorage(storage, (data) => ({ ...data, session: null }))

}