param(
    [string]$RuntimeRoot = "$env:USERPROFILE\craft\CraftMaster\windows-cl-msvc2022-x86_64",
    [string]$AppName = "QSfera",
    [switch]$Launch
)

$ErrorActionPreference = "Stop"

function Fail([string]$Message) {
    Write-Error $Message
    exit 1
}

$runtimeBin = Join-Path $RuntimeRoot "bin"
$runtimeExe = Join-Path $runtimeBin "qsfera.exe"

if (-not (Test-Path -LiteralPath $runtimeExe)) {
    Fail "QSfera executable was not found: $runtimeExe"
}

$requiredDlls = @(
    "Qt6Core.dll",
    "Qt6Gui.dll",
    "Qt6Widgets.dll",
    "Qt6Network.dll",
    "Qt6Qml.dll",
    "Qt6Quick.dll",
    "qt6keychain.dll",
    "kdsingleapplication-qt6.dll"
)

foreach ($dll in $requiredDlls) {
    $dllPath = Join-Path $runtimeBin $dll
    if (-not (Test-Path -LiteralPath $dllPath)) {
        Fail "Required runtime DLL is missing: $dllPath"
    }
}

$runKey = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Run"
New-ItemProperty -Path $runKey -Name $AppName -PropertyType String -Value $runtimeExe -Force | Out-Null
$actualValue = (Get-ItemProperty -Path $runKey).$AppName

if ($actualValue -ne $runtimeExe) {
    Fail "Autostart registry value was not updated. Expected '$runtimeExe', got '$actualValue'."
}

Write-Output "OK: $AppName autostart points to $runtimeExe"
Write-Output "OK: required Qt6 runtime DLLs are present in $runtimeBin"

if ($Launch) {
    Get-Process -Name "qsfera" -ErrorAction SilentlyContinue |
        Where-Object { $_.Path -ne $runtimeExe } |
        Stop-Process -Force -ErrorAction SilentlyContinue

    if (-not (Get-Process -Name "qsfera" -ErrorAction SilentlyContinue | Where-Object { $_.Path -eq $runtimeExe })) {
        Start-Process -FilePath $runtimeExe -WorkingDirectory $runtimeBin -WindowStyle Hidden
        Start-Sleep -Seconds 5
    }

    $process = Get-Process -Name "qsfera" -ErrorAction SilentlyContinue |
        Where-Object { $_.Path -eq $runtimeExe } |
        Select-Object -First 1

    if (-not $process) {
        Fail "QSfera did not start from $runtimeExe"
    }

    Write-Output "OK: QSfera is running from $($process.Path) with PID $($process.Id)"
}