git.r.bdr.sh - rbdr/sorting-hat-renderer/blob - lib/services/data.js

   1 /* global WebSocket */
   2
   3 const internals = {
   4   kSocketLocation: 'ws://localhost:1987',
   5
   6   data: {
   7     state: 0,
   8     runningAverages: {},
   9     winner: null
  10   },
  11
  12   initSocket() {
  13
  14     internals.socket = new WebSocket(internals.kSocketLocation);
  15     internals.socket.addEventListener('message', (data) => {
  16
  17       Object.assign(internals.data, JSON.parse(data.data));
  18     });
  19   }
  20 };
  21
  22 /**
  23  * The data structure representing the sorting hat data
  24  *
  25  * @typedef tSortingHatData
  26  * @type object
  27  * @param {number} state the current state: 0 for waiting, 1 for
  28  * polling, 2 for cool down.
  29  * @param {string} [winner] the winner after polling, might be null if
  30  * no winner is detected
  31  * @param {Object.<string,tRunningAverages>} runningAverages the running averages for
  32  * the different categories, used to render the waves
  33  */
  34
  35 /**
  36  * The running averages, including the current sum and count
  37  *
  38  * @typedef tRunningAverages
  39  * @type object
  40  * @param {number} sum the current total
  41  * @param {number} count the number of samples
  42  * @param {number} average the average (sum / count)
  43  */
  44
  45 /**
  46  * The main data service, connects to a socket and updates the internal
  47  * data structure
  48  *
  49  * @class DataService
  50  */
  51 export default {
  52
  53   /**
  54    * Returns the internal data structure, intended to be used as the data
  55    * property in vue components
  56    *
  57    * @memberof DataService
  58    * @method data
  59    * @return tSortingHatData
  60    */
  61   data() {
  62
  63     if (!internals.socket) {
  64       internals.initSocket();
  65     }
  66
  67     return internals.data;
  68   }
  69 };