fix: router guard potential mem leak

Author: codediodeio

src/app/core/auth.guard.ts

@@ -1,22 +1,21 @@
 import { Injectable } from '@angular/core';
 import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, Router } from '@angular/router';
 import { Observable } from 'rxjs/Observable';
-import { AuthService } from './auth.service';
+import { AngularFireAuth } from 'angularfire2/auth';
 import 'rxjs/add/operator/do';
 import 'rxjs/add/operator/map';
 import 'rxjs/add/operator/take';
 
 @Injectable()
 export class AuthGuard implements CanActivate {
-  constructor(private auth: AuthService, private router: Router) {}
+  constructor(private afAuth: AngularFireAuth, private router: Router) {}
 
 
   canActivate(
     next: ActivatedRouteSnapshot,
     state: RouterStateSnapshot): Observable<boolean> | boolean {
-      if (this.auth.authenticated) { return true; }
 
-      return this.auth.currentUserObservable
+      return this.afAuth.authState
            .take(1)
            .map(user => !!user)
            .do(loggedIn => {

src/app/send-email/send-email.component.html

@@ -0,0 +1 @@
+<button (click)="sendEmail('[email protected]', 'helloworld')">Send Test Email</button>

src/app/send-email/send-email.component.scss

@@ -0,0 +1,36 @@
+import { Component } from '@angular/core';
+import { Http, Headers, Response, URLSearchParams } from '@angular/http';
+import 'rxjs/add/operator/toPromise';
+
+@Component({
+  selector: 'send-email',
+  templateUrl: './send-email.component.html',
+  styleUrls: ['./send-email.component.scss']
+})
+export class SendEmailComponent {
+
+  constructor(private http: Http) { }
+
+  sendEmail(emailAddress, content) {
+
+    let url = ` https://us-central1-firestarter-96e46.cloudfunctions.net/httpEmail`
+    let params: URLSearchParams = new URLSearchParams();
+    let headers = new Headers({'Content-Type': 'application/json', 'Access-Control-Allow-Origin': '*' });
+
+    params.set('to', '[email protected]');
+    params.set('from', '[email protected]');
+    params.set('subject', 'test-email');
+    params.set('content', 'Hello World');
+
+    return this.http.post(url, params, headers)
+                    .toPromise()
+                    .then( res => {
+                      console.log(res)
+                    })
+                    .catch(err => {
+                      console.log(err)
+                    })
+
+  }
+
+}