Automating with Graph API

Automating with Graph API

by | Jul 10, 2023 | Information Technology, PowerShell

Last week we discussed sending emails with Graph API. You can read about it here. Today we will be taking that script and making it so it can be automated. On the backend, you will need to create an Azure App. You can read about how to do that here. The following code only works in Powershell 7 and above. Automating with Graph API works best in PowerShell 7. You will need to set up your App with Users.Read.All and Mail.Send as the minimal. levels.

The Script

import-module Microsoft.Graph.Users
Import-module Microsoft.Graph.Users.Actions  

$EmailToSend = "A Cloud Email @ your domain"
$EmailToReceive = "Any Email"
$AppID = "This is your App ID"
$SecuredPassword = "This is your Password"
$tenantID = "This is your tenant ID"

$SecuredPasswordPassword = ConvertTo-SecureString -String $SecuredPassword -AsPlainText -Force
$ClientSecretCredential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList $AppID, $SecuredPasswordPassword

Connect-MgGraph -TenantId $tenantID -ClientSecretCredential $ClientSecretCredential

#Connect-MgGraph -Scopes "User.Read.All, Mail.Send"
$users = Get-MgUser -filter "accountenabled eq false"
$ReturnString = ""
foreach ($user in $users) {
    if ($null -ne (Get-MgUserLicenseDetail -UserId $user.Id)) {
        [pscustomobject][ordered]@{
            UPN      = $user.UserPrincipalName
            Licenses = (Get-MgUserLicenseDetail -UserId $user.id).SkuPartNumber -join ", "
        }
        $ReturnString = $ReturnString + "$($user.UserPrincipalName): $((Get-MgUserLicenseDetail -UserId $user.id).SkuPartNumber -join ", ")`n"
    }
}
 
$body = @"
<html>
<header>Licenses</header>
<body>
<center>
<h1>Disabled Users</h1>
<h2>With Licenses</h2>
</center>
$ReturnString
</body>
</html>
"@
$params = @{
    message = @{
        subject = "Disabled Users with Licenses"
        body = @{
            contentType = "HTML"
            content = $body
        }
        toRecipients = @(
            @{
                emailAddress = @{
                    address = $EmailToReceive 
                }
            }
        )
    }
    saveToSentItems = "false"
}
 
# A UPN can also be used as -UserId.
Send-MgUserMail -UserId $EmailToSend -BodyParameter $params

The Breakdown

This script is the same as last week’s except for how it connects and how you feed the email addresses. We are using the Client Secret Credential flag, which is only available in Powershell 7, to trigger the connect command. You need some basic information first. This information will allow Automating with Graph API to work. 

$AppID = "This is your App ID"
$SecuredPassword = "This is your Password"
$tenantID = "This is your tenant ID"

The App is the application ID from the azure app you created. the tenant ID is also the tenant ID of the azure app you created. Remember, I stated to keep the secret key value. This is where you will use it. Place it in the Secure Password area. Next, we need to convert this information into a secure object. 

$SecuredPasswordPassword = ConvertTo-SecureString -String $SecuredPassword -AsPlainText -Force
$ClientSecretCredential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList $AppID, $SecuredPasswordPassword

Now, we need to convert the plain text to a secure string. We do this with the convertto-securestring command. We enter the string and force it with the force tag. Once we have done that, we want to create a credential object. We use the new-object command to create an automation pscredential object. We feed it the appID and the password we created above. This gives us the ps object that we will use for the next part. 

Connect-MgGraph -TenantId $tenantID -ClientSecretCredential $ClientSecretCredential

Using the connect-mggraph command we connect to our tenant and pass the app id and password as a single object. This will connect us directly to Graph API. Later we will run this script through the task scheduler. The remainder of the script will stay the same. Finally, we supply the email addresses. Automating with Graph API couldn’t be easier. So Enjoy!

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