private/Test-AzStorageAccountName.ps1
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function Test-AzStorageAccountName { [CmdletBinding()] param( [Parameter(Mandatory)] [string]$StorageAccountName ) # Validate format: lowercase alphanumeric, 3-24 characters if ($StorageAccountName -notmatch '^[a-z0-9]{3,24}$') { throw "Storage account name must be 3-24 lowercase alphanumeric characters." } # Check availability via Azure CLI $azResult = az storage account check-name --name $StorageAccountName --output json 2>$null | ConvertFrom-Json if (-not $azResult.nameAvailable) { throw "Storage account name '$StorageAccountName' is not available: $($azResult.message)" } return $true } |