added express endpoints, a settings service and a media info service

src/scripts/express.js

@@ -0,0 +1,36 @@
+const express = require("express");
+const { mediaInfo } = require("./mediaInfo");
+const settingsModule = require("./settings");
+const globalEvents = require("./../constants/globalEvents");
+const expressModule = {};
+var fs = require("fs");
+
+expressModule.run = function(mainWindow) {
+  function handleGlobalEvent(res, action) {
+    mainWindow.webContents.send("globalEvent", action);
+    res.sendStatus(200);
+  }
+
+  const expressApp = express();
+  expressApp.get("/", (req, res) => res.send("Hello World!"));
+  expressApp.get("/current", (req, res) => res.json(mediaInfo));
+  expressApp.get("/play", (req, res) => handleGlobalEvent(res, globalEvents.play));
+  expressApp.get("/pause", (req, res) => handleGlobalEvent(res, globalEvents.pause));
+  expressApp.get("/next", (req, res) => handleGlobalEvent(res, globalEvents.next));
+  expressApp.get("/previous", (req, res) => handleGlobalEvent(res, globalEvents.previous));
+  expressApp.get("/image", (req, res) => {
+    var stream = fs.createReadStream(mediaInfo.icon);
+    stream.on("open", function() {
+      res.set("Content-Type", "image/png");
+      stream.pipe(res);
+    });
+    stream.on("error", function() {
+      res.set("Content-Type", "text/plain");
+      res.status(404).end("Not found");
+    });
+  });
+
+  expressApp.listen(settingsModule.settings.apiSettings.port, () => {});
+};
+
+module.exports = expressModule;

src/scripts/mediaInfo.js

@@ -0,0 +1,25 @@
+const mediaInfo = {
+  title: "",
+  artist: "",
+  icon: "",
+};
+const mediaInfoModule = {
+  mediaInfo,
+};
+
+mediaInfoModule.update = function(arg) {
+  mediaInfo.title = propOrDefault(arg.title);
+  mediaInfo.artist = propOrDefault(arg.message);
+  mediaInfo.icon = propOrDefault(arg.icon);
+};
+
+/**
+ * Return the property or a default value
+ * @param {*} prop property to check
+ * @param {*} defaultValue defaults to ""
+ */
+function propOrDefault(prop, defaultValue = "") {
+  return prop ? prop : defaultValue;
+}
+
+module.exports = mediaInfoModule;

src/scripts/mediaKeys.js

@@ -1,7 +0,0 @@
-const mediaKeysModule = {
-  play: "MediaPlayPause",
-  next: "MediaNextTrack",
-  previous: "MediaPreviousTrack",
-};
-
-module.exports = mediaKeysModule;

src/scripts/settings.js

@@ -0,0 +1,13 @@
+const settings = {
+  notifications: true,
+  api: true,
+  apiSettings: {
+    port: 47836,
+  },
+};
+
+const settingsModule = {
+  settings,
+};
+
+module.exports = settingsModule;