dbname_log.ps1

$Backups = Get-DbaBackupInformation -sqlinstance localhost\sqlexpress2016 -Path C:\dbatools\RestoreTimeClean
$Backups += Get-DbaBackupInformation -sqlinstance localhost\sqlexpress2016 -Path C:\dbatools\RestoreTimeDiffStripe
$BackupSelection = $Backups | Select-DbaBackupInformation 
$BackupSelection | Format-DbaBackupInformation

$basedir = "C:\some\path\of\yourchoosing\"
$BackupSelection | Foreach-Object {
    ForEach ($file in $_.FileList){
        $t = [system.io.FileInfo]$File.PhysicalName
        $type = switch($file.Type){'D'{'Data'} 'L'{'Log'}}
        $File.PhysicalName = [io.path]::combine($basedir,$_.Database+"_"+$type,$t.Name)
    }
    
}

$BackupSelection | Test-DbaBackupInformation -SqlInstance localhost\developer2016
$BackupSelection | Invoke-DbaAdvancedRestore -sqlinstance localhost\developer2016