notification_store.js

var Dispatcher = require('the-dispatcher'),
  Immutable = require('immutable'),
  NotificationConstants = require('../constants/notification_constants'),
  UserConstants = require('../constants/user_constants'),
  UploadConstants = require('../constants/upload_constants'),
  StylesheetConstants = require('../constants/stylesheet_constants'),
  makeStore = require('makestore');

/**
 * The Notification Store does nothing but store recent actions
 * in order to power notifications.
 */

var _notifications = Immutable.Set([]);
var _errors = Immutable.List();
var _successes = Immutable.List();

var NotificationStore = makeStore({
  notifications: () => _notifications,
  errors: () => _errors,
  successes: () => _successes,
  dispatcherIndex: Dispatcher.register(action => {
    switch (action.actionType) {
      case NotificationConstants.NOTIFICATION_DISMISS:
        _notifications = Immutable.Set([]);
        break;
      case NotificationConstants.NOTIFICATION_ERROR_DISMISS:
        _errors = _errors.shift();
        break;
      case NotificationConstants.NOTIFICATION_ERROR:
        _errors = _errors.push(action.error);
        break;
      case NotificationConstants.NOTIFICATION_PAYMENT_ERROR:
        _errors = _errors.push(action.error);
        // ASK USER TO PAY
        break;
      case NotificationConstants.NOTIFICATION_UPGRADE_ERROR:
        _errors = _errors.push(action.error);
        // ASK USER TO UPGRADE
        break;
      case NotificationConstants.NOTIFICATION_SUCCESS_DISMISS:
        _successes = _successes.shift();
        break;
      case StylesheetConstants.STYLESHEET_MIGRATE_SUCCESS:
        _successes = _successes.push('Stylesheet successfully migrated to latest version.');
        break;
      case UserConstants.USER_UPDATED:
        _successes = _successes.push('Profile successfully updated.');
        break;
      case UploadConstants.UPLOAD_SET:
        _notifications = _notifications.union(Immutable.Set(
          action.value
            .filter(upload => !upload.complete)
            .map(upload => `Uploading ${upload.dataset}`)));
        break;
      default:
        // avoid emitting changes for other events.
        return true;
    }
    NotificationStore.emitChange(action.actionType);
    return true;
  })
});

NotificationStore.setMaxListeners(1000);
module.exports = NotificationStore;