Add: get token from api

web/js/demo-js-interop.js

@@ -7,10 +7,35 @@
         };
         let appState = window._appState;
 
+        function getToken() {
+            fetch(
+                'http://gymlink.freemyip.com:8080/api/auth/authorize_client',
+                {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({
+                        GymKey: 'eeb42dcb-8e5b-4f21-825a-3fc7ada43445', // Just testing token
+                        id: '123',
+                    }),
+                }
+            )
+                .then(res => res.json())
+                .catch(e => {
+                    console.log(e);
+                    setTimeout(getToken, 1000);
+                })
+                .then(data => {
+                    if (data.payload)
+                        appState.onTokenReceived(data.payload.token);
+                    else {
+                        console.log(data);
+                        setTimeout(getToken, 1000);
+                    }
+                });
+        }
+
         let btn = document.getElementById('token');
-        btn.addEventListener('click', function () {
-            appState.onTokenReceived('token123');
-        });
+        btn.addEventListener('click', getToken);
 
         let colorChangeBtnRed = document.getElementById('colorChangeBtnRed');
         colorChangeBtnRed.addEventListener('click', function () {