// License: LGPL-3.0-or-later
// npm
const snabbdom = require('snabbdom')
const flyd = require('flyd')
const R = require('ramda')
const render = require('ff-core/render')
const notification = require('ff-core/notification')
const serializeForm = require('form-serialize')
flyd.flatMap  = require('flyd/module/flatmap')
flyd.mergeAll = require('flyd/module/mergeall')

// local
const request = require('../../../common/request')
const view = require('./view')

function init() {
  var state = { submit$: flyd.stream() }

  // formSerialize will set checked boxes to "on" and unchecked boxes to "". We want it to be true/false instead
  const formObj$ = R.compose(
    flyd.map(obj => R.map(val => val === 'on' ? true : false, obj))
  , flyd.map(ev => serializeForm(ev.currentTarget, {hash: true, empty: true}))
  )(state.submit$)

  const path = `/nonprofits/${app.nonprofit_id}/users/${app.current_user_id}/email_settings`

  const updateResp$ = flyd.flatMap(
    obj => request({ path, method: 'post' , send: {email_settings: obj} }).load
  , formObj$ )

  state.email_settings$ = flyd.map(R.prop('body'), request({method: 'get', path}).load)

  state.loading$ = flyd.mergeAll([
    flyd.map(R.always(true), state.submit$)
  , flyd.map(R.always(false), updateResp$)
  ])

  const notify$ = flyd.map(()=> 'Email notification settings updated.', updateResp$)
  state.notification = notification.init({message$: notify$})

  return state
}

module.exports = {init, view}