Add sign out function & check for gapi.auth2 #43

client/src/app/login/login.component.ts

@@ -1,16 +1,66 @@
 import { Component, OnInit } from '@angular/core';
+import { Observable } from "rxjs/Observable";
 
+declare const gapi: any;
 @Component({
   selector: 'app-login',
   templateUrl: './login.component.html',
   styleUrls: ['./login.component.css']
 })
+
 export class LoginComponent implements OnInit {
+    simpleObservable = new Observable((observer) => {
+        this.checkGapi();
+    });
+
+    constructor() {
+    }
+
+    checkUserDetails() {
+        if (gapi.auth2) {
+            var googleAuth = gapi.auth2.getAuthInstance();
+            var googleUser = googleAuth.currentUser.get();
+            var profile = googleUser.getBasicProfile();
+
+            console.log('Auth is signed in: ' + googleAuth.isSignedIn.get());
+            console.log('User is signed in: ' + googleUser.isSignedIn());
+            console.log('Hosted Domain: ' + googleUser.getHostedDomain());
+            console.log('User has granted: ' + googleUser.getGrantedScopes());
+            console.log('User name: ' + profile.getName());
+            console.log('User email: ' + profile.getEmail());
+            console.log('User image: ' + profile.getImageUrl());
+
+        } else {
+            console.log('gapi.auth2 is undefined');
+        }
+    }
+
+    signOut() {
+        if (gapi.auth2) {
+            gapi.auth2.getAuthInstance().signOut();
+        } else {
+            console.log('cant sign out, no gapi');
+        }
+    }
+
+    sleep(ms) {
+        return new Promise(resolve => setTimeout(resolve, ms));
+    }
 
-  constructor() { }
+    async checkGapi() {
+        await this.sleep(100);
 
-  ngOnInit() {
+        if (gapi.auth2 != undefined) {
+            console.log('gapi.auth2 is initialized');
+            return true;
+        } else {
+            console.log('gapi.auth2 is undefined');
+            this.checkGapi();
+        }
+    }
 
-  }
+    ngOnInit() {
+        this.simpleObservable.subscribe();
+    }
 
 }