internal/functions/Test-PrincipalExists.ps1
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# Enhanced Test-PrincipalExists for orchestrator use - PowerShell 5.1 compatible function Test-PrincipalExists { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [string]$PrincipalId ) Write-Verbose "Testing if principal $PrincipalId exists" try { # Use Invoke-MgGraphRequest directly to avoid function scoping issues $uri = "https://graph.microsoft.com/v1.0/directoryObjects/$PrincipalId" $result = Invoke-MgGraphRequest -Uri $uri -Method GET -ErrorAction Stop if ($result -and $result.id) { Write-Verbose "Principal $PrincipalId exists (Type: $($result.'@odata.type'))" return $true } else { Write-Verbose "Principal $PrincipalId returned null or invalid result" return $false } } catch { # Handle specific error cases $errorMessage = $_.Exception.Message Write-Verbose "Principal $PrincipalId validation failed: $errorMessage" # Check if it's a 404 (not found) or other Graph API error if ($errorMessage -match "404|NotFound|does not exist|Request_ResourceNotFound" -or ($_.Exception.Response -and $_.Exception.Response.StatusCode -eq 404)) { Write-Verbose "Principal $PrincipalId does not exist (404 Not Found)" return $false } else { Write-Warning "Unexpected error checking principal $PrincipalId`: $errorMessage" return $false } } } |