dpaw-monorail-plugin/src/model.js

JS library to link the brocket network to the QGIS/monorail server

/**
 * @fileOverview
 * @name model.js
 * @author Gavin Coombes
 * @license BSD-3-Clause
 */

let Rx = require('rx');
let u = require('dpaw-brocket-utility');
let log = u.log;
let Obs = Rx.Observable;


function model(actions) {
  let incoming$ = actions.incoming$;
  let messageArr$ = incoming$
        .do(msg => log('Monorail.plugin: incoming msg', msg))
        .pluck('payload')
        .scan(myAggregate, [])
        .startWith(['in the beginning']);

  let state$ = Obs.combineLatest(
    messageArr$, messageArr => ({ messageArr })
  );
  return state$;
}

module.exports = model;

function myAggregate(acc, val, ix, src) {
  acc.push(val);
  return acc.slice(-10);
}