challenges.js

import {Inject} from 'di/index';
import {JFHttp} from 'lib/network/JFHttp';
import {JFChallenge} from 'lib/api/challenges/JFChallenge';

@Inject(JFHttp)
export class JFChallenges {
  constructor(http){

    this.http = http;
    this.allChallenges = [];
  }

  loadChallenges(options){
    return this.http.get('/v2/challenges',{params: options || {}})
    .then(parseChallengeResponse.bind(this));
  }

  getChallengeById(id){
    let existingChallenge = this.allChallenges.find(function(challenge){
      return challenge.id === id;
    });

    if(existingChallenge) return Promise.resolve(existingChallenge);

    return Promise.reject(false);
  }


}

function parseChallengeResponse(response){

  let self = this;

  var challenges =  response.challenges.map(function(challenge){

    return self.getChallengeById(challenge.id)
    .then(null,function(){
      var newChallenge = new JFChallenge(self,challenge);
      self.allChallenges.push(newChallenge);
      return newChallenge;
    })
    .then(function(challengeRecord){
      challengeRecord.updateValues(challengeRecord);
      return challengeRecord;
    });
  });

  return Promise.all(challenges);

}