Coding

Incorporate Azure AD with your Angular App

I began my career as a software developer and I still love the opportunity to tinker with code from time to time.  Since I usually deal with authentication and identity I have a need from time to time to demonstrate how customers can add their own custom applications to Azure AD and how the protections can be applied.  So, I spent a few days recently building and testing my own, single page, custom application based on the latest version of Angular (Typescript).

While I could detail what I did to get the project working, it is probably easier to provide the various links I used to learn Angular as well as the libraries I used and added to get the project working.

Getting Going

Since I had ZERO experience with Typescript and the latest TS Angular I started with the Tour of Heroes tutorial.

Second, I was able to find the Angular-MSAL library available here on Github.  I recommend going here so you can read the friendly documentation, but use ‘npm install @azure/msal-angular’ to add this to your development project.

Third, I followed these directions to register my application in Azure AD.

Finally, I used the sample application found here to make my application.  This is where I found the most trouble so below I’ll focus on some of the issues I had.

Issues I Had

The first issue I ran into was that every time I logged in I would get an error about lacking some api permissions.  Searching for the error didn’t provide really relevant information so I started to eliminate as much as I could.  What I discovered was that during the  LoginPopup call the Sample code I copied and pased into my app include ‘api://a88bb933-319c-41b5-9f04-eff36d985612/access_as_user’ which is unnecessary for Login and user queries so I removed it.

The second issue I ran into was that the MsalService.getAllUsers() only returned my local user’s information, which is actually documented, but I wanted that ability.  Instead I had to call directly against the Graph services to get that information which you can find my solution here.

My App

If you are interested here is the app I created.  Yes there are still some issues which I’m working on, but it may be an easier starting point for others.