fixing token expiration time (can be number or string), make sure we parse it correctly.

frontend/src/app/components/medical-sources-connected/medical-sources-connected.component.spec.ts

@@ -31,4 +31,18 @@ describe('MedicalSourcesConnectedComponent', () => {
   it('should create', () => {
     expect(component).toBeTruthy();
   });
+
+  it('should handle nanosecond and microsecond token expirations', () => {
+    var tokenResponse = {
+      token_type: "Bearer",
+      expires_in: "3600",
+      access_token: "OXgK8mrfvMrxIMK38T6CAjKiLMDV",
+      refresh_token: "5Oq5ZgcTgi9-xxxxxxx",
+      patient: "a-80000.xxxx"
+    }
+
+    var expiresAt = component.getAccessTokenExpiration(tokenResponse)
+    expect(expiresAt.toString().length).toEqual(10)
+  })
+
 });

frontend/src/app/components/medical-sources-connected/medical-sources-connected.component.ts

@@ -243,19 +243,18 @@ export class MedicalSourcesConnectedComponent implements OnInit {
   public getAccessTokenExpiration(tokenResponse: any): number
   {
     const now = Math.floor(Date.now() / 1000);
-    let expires_at = 0;
-
 
     // Option 1 - using the expires_in property of the token response
     if (tokenResponse.expires_in) {
-      return now + tokenResponse.expires_in;
+      return now + parseInt(tokenResponse.expires_in);
     }
 
     // Option 2 - using the exp property of JWT tokens (must not assume JWT!)
     if (tokenResponse.access_token) {
+
       let tokenBody = this.jwtDecode(tokenResponse.access_token);
       if (tokenBody && tokenBody['exp']) {
-        return tokenBody['exp'];
+        return parseInt(tokenBody['exp']);
       }
     }