gistfile1.txt

export const LOAD_EMAIL_PREFERENCES = 'LOAD_EMAIL_PREFERENCES'
export const LOADED_EMAIL_PREFERENCES = 'LOADED_EMAIL_PREFERENCES'
export function loadEmailPreferences (personId) {
  const emailPreferences = { newsletters: [] }
  return async (dispatch, getState) => {
    dispatch({ type: LOAD_EMAIL_PREFERENCES })
    const account = getState().guests[personId].account
    const centres = account.newsletter_centre_ids
    const subscriptions = account.newsletter_subscriptions
    if (centres.length) {
      const newslettersByCentre = await Promise.all(centres.map(getNewslettersByCentre))
      newslettersByCentre.forEach(centreNewsletters => {
        centreNewsletters.forEach(({ newsletters }) => {
          newsletters.forEach(newsletter => {
            if (subscriptions.includes(newsletter.newsletter_id)) {
              emailPreferences.newsletters.push(newsletter)
            }
          })
        })
      })
      dispatch({ type: LOADED_EMAIL_PREFERENCES, payload: emailPreferences })
    }
  }
}

async function getNewslettersByCentre (centre_id) {
  const newslettersEndpoint = NEWSLETTERS_ENDPOINT.clone()
  newslettersEndpoint.addQuery('centre_id', centre_id)
  const newslettersResponse = await looseFetch(newslettersEndpoint)
  return newslettersResponse.data // [{centre_id, newsletters}]
}