param(
  [string]$DataDir = "runtime-data",
  [string]$BackupDir = "backups"
)

$ErrorActionPreference = "Stop"

$root = (Resolve-Path ".").Path
$resolvedDataDir = Resolve-Path $DataDir

if (-not $resolvedDataDir.Path.StartsWith($root)) {
  throw "Refusing to back up a path outside the repository: $($resolvedDataDir.Path)"
}

New-Item -ItemType Directory -Path $BackupDir -Force | Out-Null

$timestamp = Get-Date -Format "yyyyMMdd-HHmmss"
$archivePath = Join-Path $BackupDir "cargoradar-runtime-$timestamp.zip"

Compress-Archive -Path (Join-Path $resolvedDataDir.Path "*") -DestinationPath $archivePath -Force

[pscustomobject]@{
  Backup = (Resolve-Path $archivePath).Path
} | Format-List