Better tenant lookup

Author: rvdwegen

Modules/CIPPCore/Public/Entrypoints/Invoke-ListExternalTenantInfo.ps1

@@ -22,10 +22,24 @@ function Invoke-ListExternalTenantInfo {
 
             if ($TenantId) {
                 $GraphRequest = New-GraphGetRequest -uri "https://graph.microsoft.com/beta/tenantRelationships/findTenantInformationByTenantId(tenantId='$TenantId')" -NoAuthCheck $true -tenantid $env:TenantID
+
+
+                # New API call to retrieve branding details
+                $brandingBody = @{
+                    username = "completelymadeupdoesnthavetobevalid@$($GraphRequest.defaultDomainName)"
+                } | ConvertTo-Json
+
+                $brandingHeaders = @{
+                    "Content-Type" = "application/json"
+                }
+
+                $brandingResponse = Invoke-RestMethod -Method Post -Uri "https://login.microsoftonline.com/common/GetCredentialType" -Body $brandingBody -Headers $brandingHeaders
+
                 $StatusCode = [HttpStatusCode]::OK
                 $HttpResponse.Body = [PSCustomObject]@{
                     GraphRequest = $GraphRequest
                     OpenIdConfig = $OpenIdConfig
+                    UserTenantBranding = $brandingResponse.EstsProperties.UserTenantBranding
                 }
             } else {
                 $HttpResponse.StatusCode = [HttpStatusCode]::BadRequest