WebSockets Work started

+ Implemented Gorilla Sockets
+ Implemented a javascript class
+ Golang Struct introduced
+ JSON parsing from the websocket
+ Fail handlers

static/js/ws.js

@@ -0,0 +1,71 @@
+class PadSocket {
+
+    ws      = null;
+    padName = null;
+    state   = null;
+
+    /**
+     * Create a new PadSocket
+     * @param {string} padName The name of the pad
+     * @param {string} connUrl The URL to the websocket
+     */
+    constructor(padName, connUrl = null) {
+
+        // Check if a connection URL was mentioned
+        if ( connUrl == null ) {
+            // Try and connect to the local websocket
+            connUrl = `ws://` + window.location.host + "/ws/get";
+        }
+
+        // Connect to the websocket
+        const ws = new WebSocket(connUrl);
+        ws.onopen = () => {
+            this.state = 'active';
+        }
+
+        // Bind the onMessage function
+        ws.onmessage = this.handleMessage;
+
+        // Assign the websocket
+        this.ws = ws;
+        // Assign the pad name
+        this.padName = padName;
+    }
+
+    /**
+     * @description Send a message to the server
+     * @param {string} eventType The type of event, this can be anything really, it's just used for routing by the server
+     * @param {Object} message The message to send out to the server, this can only be of format string but JSON is parsed.
+     */
+    sendMessage = (eventType, message) => {
+
+        if ( this.state != 'active' ) {
+            throw new Error(`The websocket connection is not active`);
+        }
+
+        // Check if the message is a string
+        if ( typeof message == 'string' ) {
+            // Convert the message into a map[string]interface{}
+            message = {
+                "message": message,
+            };
+        }
+
+        this.ws.send( JSON.stringify({
+            eventType,
+            padName: this.padName,
+            message,
+        }))
+
+    }
+
+    handleMessage = ev => {
+        console.log(ev);
+    }
+
+}
+
+// wait for the whole window to load
+window.addEventListener(`load`, e => {
+    window.socket = new PadSocket(padTitle);
+})