<#
.SYNOPSIS
  Tail logs for the stack (or a single service, e.g. api / frontend / postgres).
.EXAMPLE
  ./deploy/logs.ps1            # all services
  ./deploy/logs.ps1 api        # just the API container
#>
param([string]$Service)

$ErrorActionPreference = 'Stop'
$root    = Split-Path -Parent $PSScriptRoot
$envFile = Join-Path $PSScriptRoot '.env'

$composeArgs = @('compose', '--env-file', $envFile, 'logs', '-f', '--tail', '200')
if ($Service) { $composeArgs += $Service }

Push-Location $root
try { & docker @composeArgs }
finally { Pop-Location }