Calling Graph API with powershell or batch - powershell

Question

In trying to design a simplified script for use with the office 365 graph API I can't seem to find any way to call it from a simplified outset.
For the use that I have intended for it I really don't want to take the time to build and compile an actual program when everything else can be done from powershell or a batch script.
In specific, I really only want to be able to call the graph API for a list of groups and store the result (in an array or text file). Is it possible to call the graph API from powershell or command line and if so, how?

Answer 1

In specific, I really only want to be able to call the graph API for a list of groups and store the result (in an array or text file).
If you just need to export a list of groups. I suggest you using the Azure Active Directory PowerShell.
$msolcred = get-credential
connect-msolservice -credential $msolcred
Get-MsolGroup | Out-File C:\Workbench\temp\tests\export.txt
Is it possible to call the graph API from powershell or command line and if so, how?
Yes, it is possible, to call the REST API:
First, you need to Obtaining an Access Token
Then, use the Invoke-RestMethod to call Graph API.
Invoke-RestMethod -Uri $uri -Headers #{Authorization = "Bearer {your_access_token}"}

Answer 2

You can use the PSMSGRAPH module for this. Can be download from the gallery
You must register an application in Azure to authenticate and delegate the necessary right to your app. You can do it at the appreg portal
Once this is done you just need to auth and run your request.
When running the code you will have to provide a credential to authorize.
$username = 'entertheappidhere'
$password = 'entertheapppaswordhere' | ConvertTo-SecureString -AsPlainText -Force
$ClientCredential = New-Object -TypeName
System.Management.Automation.PSCredential($username,$password)
$GraphAppParams = #{}
$GraphAppParams.Add('Name','Office365TenantMigration')
$GraphAppParams.Add('ClientCredential',$ClientCredential)
$GraphAppParams.Add('RedirectUri','https://localhost/')
$GraphAppParams.Add('Tenant','yourtenant.onmicrosoft.com')
$GraphApp = New-GraphApplication #GraphAppParams
# This will prompt you to log in with your O365/Azure credentials.
$AuthCode = $GraphApp | Get-GraphOauthAuthorizationCode
$GraphAccessToken = $AuthCode | Get-GraphOauthAccessToken -Resource 'https://graph.microsoft.com/'
$GraphAccessToken | Export-GraphOAuthAccessToken -Path 'f:\O365Report\AccessToken.XML'
$GraphAccessToken = Import-GraphOAuthAccessToken -Path 'f:\O365Report\AccessToken.XML'
$GraphAccessToken | Update-GraphOAuthAccessToken -Force
### Run the query
Invoke-GraphRequest -Uri "https://graph.microsoft.com/v1.0/groups"-Method GET -AccessToken $GraphAccessToken