//set JSON content type and CORS headers for the response
response.header('Content-Type','application/json');
response.header('Access-Control-Allow-Origin', '*');
response.header('Access-Control-Allow-Headers', '*');

//respond to CORS preflight requests
if (request.method == 'OPTIONS') {
response.status(204).send('');
}

// pull in firebase
var firebase = require('firebase');

require("firebase/firestore");

let config = {
  // config stuff here
}

if (!firebase.apps.length) {
firebase.initializeApp(config);
}

// grab doc id from request
var id = request.query.docId;

// declare connection to firestore
var db = firebase.firestore();

// grab user from request
var docRef = db.collection("clients").doc(id);

// grab the users server and id
docRef.get().then(function(doc) {

// grab the account id
var accountId = doc.data().accountId;

// declare master variable that will be returned
var toReturn = [];

// declare variables that will be returned in toReturn
var gpmGames = [];
var cspmGames = [];
var damageGames = [];
var damageToChampionsGames = [];
var damageTakenGames = [];
var wardsGames = [];

db.collection('games')
  .where('accountId', '==', accountId)
  .get()
  .then((res) => {
    var games = res.docs;
    // iterate through games and get averages and totals to return
    games.forEach(function(game) {

      gpmGames.push(game.data().gpm);
      cspmGames.push(game.data().cspm);
      damageGames.push(game.data().damage);
      damageToChampionsGames.push(game.data().damagetochampions);
      damageTakenGames.push(game.data().damagerecieved);
      wardsGames.push(game.data().wards);

    });
  });

  toReturn['gpmGames'] = gpmGames;
  toReturn['cspmGames'] = cspmGames;
  toReturn['damageGames'] = damageGames;
  toReturn['damageToChampionsGames'] = damageToChampionsGames;
  toReturn['damageTakenGames'] = damageTakenGames;
  toReturn['wardsGames'] = wardsGames;

response.status(200).send(toReturn);
});