Add playlist-sync and group-wait to SyncPlay

src/components/syncPlay/core/timeSync/server.js

@@ -0,0 +1,39 @@
+/**
+ * Module that manages time syncing with server.
+ * @module components/syncPlay/core/timeSync/server
+ */
+
+import TimeSync from './timeSync';
+
+/**
+ * Class that manages time syncing with server.
+ */
+class TimeSyncServer extends TimeSync {
+    constructor(syncPlayManager) {
+        super(syncPlayManager);
+    }
+
+    /**
+     * Makes a ping request to the server.
+     */
+    requestPing() {
+        const apiClient = this.manager.getApiClient();
+        const requestSent = new Date();
+        let responseReceived;
+        return apiClient.getServerTime().then((response) => {
+            responseReceived = new Date();
+            return response.json();
+        }).then((data) => {
+            const requestReceived = new Date(data.RequestReceptionTime);
+            const responseSent = new Date(data.ResponseTransmissionTime);
+            return Promise.resolve({
+                requestSent: requestSent,
+                requestReceived: requestReceived,
+                responseSent: responseSent,
+                responseReceived: responseReceived
+            });
+        });
+    }
+}
+
+export default TimeSyncServer;