node_helper.js

/* Magic Mirror
 * Node Helper: MMM-Vrr
 *
 * By Steven Zemelka <hello@klizzy.com>
 * MIT Licensed.
 */

let NodeHelper = require("node_helper");
const request = require("request").defaults({ encoding: null });

module.exports = NodeHelper.create({
  start: function () {
    console.log("MMM-VRR Node-helper loaded!");
  },

  socketNotificationReceived: function (notification, imageUrl) {
    if (notification === "MMM-VRR-SEND-IMAGE-URL") {
      this.getImageAsBase64(imageUrl);
    }
  },

  getImageAsBase64: function (imageUrl) {
    let self = this;
    request.get(imageUrl, function (error, response, body) {
      let data;
      if (!error && response.statusCode === 200) {
        data =
          "data:" +
          response.headers["content-type"] +
          ";base64," +
          Buffer.from(body).toString("base64");
        self.sendSocketNotification("base64ImageReceived", data);
      }
    });
  }
});