candidates.js

//candidates.js
//API for getting info on candidates

const logger = require('./utils/logger');
const db = require('./campaignFinanceDb')();
const q = require('q');

module.exports = {
  getAllCandidates: getAllCandidates,
  getCandidate: getCandidate,
  getRace: getRace,
  getElectedOfficials: getElectedOfficials
};

function getAllCandidates() {
  const defer = q.defer();

  db.candidates.find({}, { _id: 1 }).toArray().then(
    function(candidate_docs) {
      let candidates = candidate_docs.map(function(candidate) {
        const id = candidate._id.last_name;
        return {
          candidate: candidate._id,
          resourceUrl: constructResourceUrl('candidate', id, candidate._id)
        };
      });
      defer.resolve(candidates);
    },
    function(err) {
      defer.reject(err);
    }
  );

  return defer.promise;
}

function getCandidate(lastName, firstName, middleName) {
  const defer = q.defer();

  const id = {};
  id['_id.first_name'] = firstName;
  id['_id.last_name'] = lastName;
}

function getRace(position, year) {}

function getElectedOfficials(year) {
  const deferred = q.defer();
  db.candidates.find({ 'held_office.elected_year': year }).toArray().then(
    function(electedOfficials) {
      deferred.resolve(electedOfficials);
    },
    function(err) {
      deferred.reject(err);
    }
  );

  return deferred.promise;
}

function constructResourceUrl(endpoint, id, queryParams) {
  let url = '/dc-campaign-finance/api/' + endpoint + '/' + id + '?';
  for (key in queryParams) {
    url = url + key + '=' + queryParams[key] + '&';
  }

  return url;
}

function calculateCorporateToGrassRootRatio(corporateDonors, individualDonors) {
  let ratio = null;
  if (corporateDonors == 0) {
    ratio = 1;
  } else if (individualDonors == 0) {
    ratio = 0;
  } else {
    ratio = corporateDonors / individualDonors;
  }

  return ratio;
}

function calculateContributorQuality(numberOfDonors, quality) {
  return quality / (numberOfDonors * 8);
}