param(
    [ValidateSet('', 'codex', 'claude', 'opencode')]
    [string]$App = 'codex',
    [string]$Model = ''
)
$ErrorActionPreference = 'Stop'
$gmTempDirectory = $null
$gmCorePath = $null
$gmExitCode = 1
try {
    if (-not (Get-Command node -ErrorAction SilentlyContinue)) {
        throw 'Node.js 22 or newer is required: https://nodejs.org/'
    }
    $gmNodeVersion = & node -p 'process.versions.node'
    if ($LASTEXITCODE -ne 0 -or [int]$gmNodeVersion.Split('.')[0] -lt 22) { throw 'Update Node.js to 22 or newer: https://nodejs.org/' }
    if (-not $App) { throw 'Choose an application: -App codex, -App claude or -App opencode.' }

    $gmTempDirectory = Join-Path ([IO.Path]::GetTempPath()) ('gmshop-install-' + [guid]::NewGuid().ToString('N'))
    $null = New-Item -ItemType Directory -Path $gmTempDirectory
    if ($env:OS -eq 'Windows_NT') {
        $gmIdentity = [Security.Principal.WindowsIdentity]::GetCurrent().User
        $gmAcl = New-Object Security.AccessControl.DirectorySecurity
        $gmAcl.SetAccessRuleProtection($true, $false)
        $gmRule = New-Object Security.AccessControl.FileSystemAccessRule($gmIdentity, 'FullControl', 'ContainerInherit,ObjectInherit', 'None', 'Allow')
        $gmAcl.AddAccessRule($gmRule)
        Set-Acl -LiteralPath $gmTempDirectory -AclObject $gmAcl
    } else {
        & chmod 700 $gmTempDirectory
        if ($LASTEXITCODE -ne 0) { throw 'Unable to protect the temporary directory.' }
    }
    [Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
    $gmCorePath = Join-Path $gmTempDirectory 'configure.mjs'
    Invoke-WebRequest -Uri 'https://download.sosihuy.ru/configure.mjs' -OutFile $gmCorePath -UseBasicParsing -MaximumRedirection 0 -TimeoutSec 60
    $gmArguments = @($gmCorePath, '--app', $App)
    if ($Model) { $gmArguments += @('--model', $Model) }
    & node @gmArguments
    $gmExitCode = $LASTEXITCODE
} catch {
    [Console]::Error.WriteLine('GMshopPW installer: ' + $_.Exception.Message)
} finally {
    if ($gmCorePath -and (Test-Path -LiteralPath $gmCorePath)) { Remove-Item -LiteralPath $gmCorePath -Force }
    if ($gmTempDirectory -and (Test-Path -LiteralPath $gmTempDirectory)) { Remove-Item -LiteralPath $gmTempDirectory -Force }
}
if ($gmExitCode -ne 0) { throw "GMshopPW configuration failed (exit $gmExitCode)." }