AuthN to AzureAD using PowerShell and AzureAD PSM ADAL Helper Lib

AuthNtoAzureADwithPShellandADALHelperLib.ps1

# Hack to ignore versioning of the dll file and folder structure
$folderName = (Get-ChildItem -Path "C:\Program Files\WindowsPowerShell\Modules\AzureAD\2.0.*\Microsoft.IdentityModel.Clients.ActiveDirectory.dll").Directory.Name | Sort-Object -Descending | Select-Object -First 1

# ADAL Helper Lib
Add-Type -Path "c:\Program Files\WindowsPowerShell\Modules\AzureAD\$folderName\Microsoft.IdentityModel.Clients.ActiveDirectory.dll"
# Azure tenant
$tenant = ""
# Application ID for Powershell client 
$client_Id = "1950a258-227b-4e31-a9cf-717495945fc2" 
# Login URI
$authority = "https://login.microsoftonline.com/$tenant"
#redirect uri of powershell
[uri]$redirectUri = "urn:ietf:wg:oauth:2.0:oob" 
# API URL
$resource = "https://management.azure.com"

# Username and Password
$username = ""
$password = ConvertTo-SecureString "" –asplaintext –force
$credentials = New-Object System.Management.Automation.PSCredential $Username, $password
# Endpoint
$authContext = New-Object "Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationContext" -ArgumentList $authority 
# Credentials to connect
$AADcredential = New-Object "Microsoft.IdentityModel.Clients.ActiveDirectory.UserPasswordCredential" -ArgumentList $credentials.UserName, $credentials.Password
# AuthN and get token
$authenticationResult = [Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationContextIntegratedAuthExtensions]::AcquireTokenAsync($authContext, $resource, $client_Id, $AADcredential).result
# create AuthN Header
$BearerToken = $authenticationResult.CreateAuthorizationHeader()

$BearerToken