# StatusQuo_Updates/scripts/update.ps1
# Zentraler Updater - wird von update.bat per Invoke-Expression geladen.
# Erwartet im aufrufenden Scope: $proj (Projektname z.B. 'VI3DGL'), $root (Installationspfad)
$ErrorActionPreference = 'Stop'
$DistBase = "https://gitea.rhino.nrw/Rhino/StatusQuo_Updates/raw/branch/main/$proj"

# Lokale Version lesen
$localVer = '0.0.0'
$verFile  = Join-Path $root 'VERSION'
if (Test-Path -LiteralPath $verFile) { $localVer = (Get-Content $verFile -Raw).Trim() }

# Remote-Version abfragen
Write-Host "Prüfe Update für $proj ..."
try {
    $remoteVer = (Invoke-WebRequest -Uri "$DistBase/VERSION" -UseBasicParsing -TimeoutSec 15).Content.Trim()
} catch {
    Write-Host "FEHLER: Dist-Repo nicht erreichbar. Netzverbindung prüfen." -ForegroundColor Red
    return
}

Write-Host "Lokal:  v$localVer"
Write-Host "Remote: v$remoteVer"

if ($localVer -eq $remoteVer) {
    Write-Host "Bereits auf aktuellem Stand. Kein Update nötig." -ForegroundColor Green
    return
}

$yn = Read-Host "Update von v$localVer auf v$remoteVer installieren? [j/N]"
if ($yn -notin 'j','J','y','Y') { Write-Host "Abgebrochen."; return }

# Temp-Ordner
$tmp = Join-Path $root 'TempUpdate'
Remove-Item $tmp -Recurse -Force -ErrorAction SilentlyContinue
New-Item -ItemType Directory -Path $tmp | Out-Null

# Bundles laden
Write-Host "Lade Manifest ..."
$manifest = (Invoke-WebRequest -Uri "$DistBase/MANIFEST.txt" -UseBasicParsing -TimeoutSec 30).Content
$bundles  = ($manifest -split "`n" | Where-Object { $_ -match '^sync-bundle-' } |
             ForEach-Object { ($_ -split '	')[0] } | Sort-Object -Unique)

foreach ($b in $bundles) {
    Write-Host "  $b ..."
    Invoke-WebRequest -Uri "$DistBase/$b" -OutFile (Join-Path $tmp $b) -UseBasicParsing -TimeoutSec 120
}
Write-Host "  sync-entpacken.bat ..."
Invoke-WebRequest -Uri "$DistBase/sync-entpacken.bat" -OutFile (Join-Path $tmp 'sync-entpacken.bat') -UseBasicParsing -TimeoutSec 30

# Server stoppen
Write-Host "Stoppe Server ..."
$stopBat = Join-Path $root 'stop.bat'
if (Test-Path -LiteralPath $stopBat) {
    & cmd /c "`"$stopBat`""
    Start-Sleep -Seconds 2
}

# Backup
$ts    = Get-Date -Format 'yyyyMMdd-HHmmss'
$bkDir = Join-Path $root ".backup\$ts"
New-Item -ItemType Directory -Path $bkDir -Force | Out-Null
foreach ($ext in '*.ps1','*.html','*.js','*.css','*.bat') {
    Get-ChildItem -LiteralPath $root -File -Filter $ext -ErrorAction SilentlyContinue |
        Copy-Item -Destination $bkDir
}
Write-Host "Backup: $bkDir"

# Entpacken (sync-entpacken.bat aus TempUpdate → schreibt in Root eine Ebene hoeher)
Write-Host "Entpacke ..."
& cmd /c "`"$(Join-Path $tmp 'sync-entpacken.bat')`""

# VERSION lokal aktualisieren
[System.IO.File]::WriteAllText($verFile, ($remoteVer + "`r`n"), [System.Text.Encoding]::UTF8)
Write-Host "Version auf v$remoteVer aktualisiert." -ForegroundColor Green

# Aufräumen
Remove-Item $tmp -Recurse -Force -ErrorAction SilentlyContinue

# Server neu starten
$dglBat = Join-Path $root 'dgl.bat'
if (Test-Path -LiteralPath $dglBat) {
    Start-Process -FilePath 'cmd.exe' -ArgumentList "/c `"$dglBat`"" -WindowStyle Hidden
    Write-Host "Server gestartet." -ForegroundColor Green
} else {
    Write-Host "dgl.bat nicht gefunden — bitte Server manuell starten." -ForegroundColor Yellow
}
Write-Host ""
Write-Host "=== Update abgeschlossen ===" -ForegroundColor Green