# =============================================================================
# migrate-media.ps1
# Migrates user-uploaded media files from host bind-mount (eVibes / early Schon)
# into the new Docker-managed named volume (media-data).
#
# Run this ONCE after upgrading from an eVibes or pre-volume Schon instance.
# =============================================================================
Set-StrictMode -Version Latest
$ErrorActionPreference = 'Stop'

$HostMedia = Join-Path (Get-Location) "media"

Write-Host "Schon - media migration from host bind-mount to named volume" -ForegroundColor Cyan
Write-Host ""

if (-not (Test-Path $HostMedia)) {
    Write-Host "No .\media directory found on host. Nothing to migrate." -ForegroundColor Yellow
    exit 0
}

$FileCount = (Get-ChildItem -Path $HostMedia -Recurse -File).Count
if ($FileCount -eq 0) {
    Write-Host "Host .\media directory is empty. Nothing to migrate." -ForegroundColor Yellow
    exit 0
}

Write-Host "Found $FileCount file(s) in $HostMedia" -ForegroundColor White
Write-Host ""
Write-Host "This will copy them into the Docker named volume 'media-data'." -ForegroundColor White
$confirm = Read-Host "Continue? [y/N]"
if ($confirm -ne "y" -and $confirm -ne "Y") {
    Write-Host "Migration cancelled." -ForegroundColor Yellow
    exit 0
}

Write-Host ""
Write-Host "Copying files..." -ForegroundColor White

$HostMediaUnix = $HostMedia -replace '\\', '/' -replace '^([A-Za-z]):', { "/$(($_.Value[0]).ToString().ToLower())" }

docker compose run --rm `
    -v "${HostMediaUnix}:/old_media:ro" `
    app bash -c @"
cp -a /old_media/. /app/media/
COUNT=`$(find /app/media -type f | wc -l)
echo "Migration complete: `$COUNT file(s) now in media volume."
"@

Write-Host ""
Write-Host "Done. You can safely ignore the host .\media directory - it is no longer used." -ForegroundColor Green
Write-Host "To remove it: Remove-Item -Recurse -Force .\media" -ForegroundColor Gray