Mounting azure files in azure app service via SMB protocol

Need someone to complete this POC, following are the detail & steps to be done-
Mounting azure files in azure app service (windows) via SMB (reference- https://learn.microsoft.com/en-us/azure/app-service/configure-connect-to-azure-storage?pivots=code-windows&tabs=portal )
(Note- we do not want to use SAS based authentication, we want to go with managed identity & service principle)

Storage should not be public, enable private endpoint so that only specific network could access it.
(Note- to accomplish this, you will have to create VNET etc.)

Create service principle (via azure active directory), and assign required roles for azure files, so that external apps could access the file mount using this service principle.

Use case 1 - Then write a code in .NET 4.8 framework to access it from same app service where azure files is mounted using managed identity. Deploy & test it on azure. For app service which are running in azure, managed identity can be used for authentication for storage.

Use case 2 - Then write a code in .NET 4.8 framework to access the file mount from other external applications which are running in on-premise (like your laptop) using service principle. Foe external apps, managed identity cannot be used, hence need to use service principle only.