programmatic data refresh using api

Thanks for the response Eric_Zhang, it let me know that what I was trying to achieve could be done.  I did some more digging and was able to modify the function in the PS script to use supplied credentials:

function GetAuthToken
{
    $adal = "${env:ProgramFiles(x86)}\Microsoft SDKs\Azure\PowerShell\ServiceManagement\Azure\Services\Microsoft.IdentityModel.Clients.ActiveDirectory.dll"
 
    $adalforms = "${env:ProgramFiles(x86)}\Microsoft SDKs\Azure\PowerShell\ServiceManagement\Azure\Services\Microsoft.IdentityModel.Clients.ActiveDirectory.WindowsForms.dll"
 
    [System.Reflection.Assembly]::LoadFrom($adal) | Out-Null
 
    [System.Reflection.Assembly]::LoadFrom($adalforms) | Out-Null
 
    $redirectUri = "https://login.live.com/oauth20_desktop.srf"
 
    $resourceAppIdURI = "https://analysis.windows.net/powerbi/api"
 
    $authority = "https://login.windows.net/common/oauth2/authorize";
       
    $userName = "[email protected]"

    $password = "MyPW"

    $creds = New-Object "Microsoft.IdentityModel.Clients.ActiveDirectory.UserCredential" -ArgumentList $userName,$password
 
    $authContext = New-Object "Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationContext" -ArgumentList $authority

    $authResult = $authContext.AcquireToken($resourceAppIdURI, $clientId, $creds)
   

    return $authResult

}

Obviously I won't be hardcoding these credentials in the script but for testing purposes it works!

EDIT:  it looks like my code block has been invaded with emoji's.  If anyone is wondering you would replace the emoji with a colon ":" and the letter "P".