$projectRoot = "C:\Users\surov\Documents\AZA\backup 24.2.26"
$innoScript = Join-Path $projectRoot "installer\aza_installer.iss"
$setupOutput = Join-Path $projectRoot "dist\installer\aza_desktop_setup.exe"
$versionMetaDir = Join-Path $projectRoot "dist\installer_meta"
$versionMetaFile = Join-Path $versionMetaDir "aza_version_info.txt"
$azaVersionPy = Join-Path $projectRoot "aza_version.py"

function Find-InnoSetup {
    $candidates = @(
        "${env:ProgramFiles(x86)}\Inno Setup 6\ISCC.exe",
        "${env:ProgramFiles}\Inno Setup 6\ISCC.exe",
        "C:\Program Files (x86)\Inno Setup 6\ISCC.exe",
        "C:\Program Files\Inno Setup 6\ISCC.exe",
        "${env:LOCALAPPDATA}\Programs\Inno Setup 6\ISCC.exe"
    )

    foreach ($path in $candidates) {
        if ($path -and (Test-Path $path)) {
            return $path
        }
    }

    $regPaths = @(
        "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Inno Setup 6_is1",
        "HKLM:\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Inno Setup 6_is1",
        "HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Inno Setup 6_is1"
    )

    foreach ($regPath in $regPaths) {
        try {
            $installLocation = (Get-ItemProperty $regPath -ErrorAction SilentlyContinue).InstallLocation
            if ($installLocation) {
                $iscc = Join-Path $installLocation "ISCC.exe"
                if (Test-Path $iscc) {
                    return $iscc
                }
            }
        } catch {}
    }

    $isccInPath = Get-Command "ISCC.exe" -ErrorAction SilentlyContinue
    if ($isccInPath) {
        return $isccInPath.Source
    }

    return $null
}

function Install-InnoSetup {
    $innoUrl = "https://jrsoftware.org/download.php/is.exe"
    $installerPath = Join-Path $env:TEMP "innosetup6_installer.exe"

    Write-Host ""
    Write-Host "Inno Setup 6 wird automatisch heruntergeladen und installiert..."
    Write-Host "Quelle: $innoUrl"

    try {
        [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
        Invoke-WebRequest -Uri $innoUrl -OutFile $installerPath -UseBasicParsing
    } catch {
        Write-Error "Download von Inno Setup fehlgeschlagen: $_"
        return $false
    }

    if (-not (Test-Path $installerPath)) {
        Write-Error "Inno Setup Installer wurde nicht heruntergeladen."
        return $false
    }

    Write-Host "Installiere Inno Setup 6 (silent)..."
    $process = Start-Process -FilePath $installerPath -ArgumentList "/VERYSILENT", "/SUPPRESSMSGBOXES", "/NORESTART" -Wait -PassThru

    if ($process.ExitCode -ne 0) {
        Write-Error "Inno Setup Installation fehlgeschlagen (Exit Code: $($process.ExitCode))."
        return $false
    }

    Write-Host "Inno Setup 6 wurde erfolgreich installiert."
    return $true
}

# --- Voraussetzungen pruefen ---

if (-not (Test-Path $innoScript)) {
    Write-Error "Installer-Script nicht gefunden: $innoScript"
    exit 1
}

if (-not (Test-Path $azaVersionPy)) {
    Write-Error "aza_version.py nicht gefunden: $azaVersionPy"
    exit 1
}

if (-not (Test-Path (Join-Path $projectRoot "dist\aza_desktop\aza_desktop.exe"))) {
    Write-Error "Desktop-Build nicht gefunden. Bitte zuerst build_exe.ps1 ausfuehren."
    exit 1
}

# --- Inno Setup finden oder automatisch installieren ---

$innoCompiler = Find-InnoSetup

if (-not $innoCompiler) {
    $installed = Install-InnoSetup
    if ($installed) {
        $innoCompiler = Find-InnoSetup
    }

    if (-not $innoCompiler) {
        Write-Host ""
        Write-Error "Inno Setup 6 konnte nicht gefunden oder installiert werden."
        Write-Host ""
        Write-Host "Bitte Inno Setup 6 manuell installieren:"
        Write-Host "  https://jrsoftware.org/isdl.php"
        Write-Host ""
        Write-Host "Danach dieses Script erneut ausfuehren."
        exit 1
    }
}

Write-Host "Inno Setup Compiler: $innoCompiler"

# --- Version lesen ---

if (-not (Test-Path $versionMetaDir)) {
    New-Item -ItemType Directory -Path $versionMetaDir | Out-Null
}

Write-Host "Lese zentrale AZA-Version aus aza_version.py..."
$versionContent = Get-Content $azaVersionPy -Raw
if ($versionContent -match 'APP_VERSION\s*=\s*"([^"]+)"') {
    $appVersion = $matches[1].Trim()
} else {
    $appVersion = $null
}

if (-not $appVersion) {
    Write-Error "Konnte APP_VERSION nicht aus aza_version.py lesen."
    exit 1
}

Set-Content -Path $versionMetaFile -Value $appVersion -Encoding ASCII

# --- Ausgabe-Ordner sicherstellen ---

$outputDir = Join-Path $projectRoot "dist\installer"
if (-not (Test-Path $outputDir)) {
    New-Item -ItemType Directory -Path $outputDir | Out-Null
}

# --- Installer bauen ---

Write-Host "Baue AZA Installer (Version $appVersion)..."
& $innoCompiler "/DMyAppVersion=$appVersion" $innoScript

if ($LASTEXITCODE -ne 0) {
    Write-Error "Installer-Build fehlgeschlagen."
    exit 1
}

if (-not (Test-Path $setupOutput)) {
    Write-Error "Installer wurde nicht gefunden: $setupOutput"
    exit 1
}

Write-Host ""
Write-Host "Installer erfolgreich erstellt:"
Write-Host $setupOutput
Write-Host "Verwendete Version:"
Write-Host $appVersion