param(
    [string]$HostName,
    [int]$Port = 0
)

$ErrorActionPreference = "Stop"
Set-Location -LiteralPath $PSScriptRoot

if ($HostName) {
    $env:CONTROLLER_HOST = $HostName
}
if ($Port -gt 0) {
    $env:CONTROLLER_PORT = [string]$Port
    if (-not $env:CONTROLLER_PUBLIC_BASE_URL) {
        $env:CONTROLLER_PUBLIC_BASE_URL = "http://127.0.0.1:$Port"
    }
}

$pythonExe = $null
$pythonArgs = @()

if ($env:PYTHON_EXE -and (Test-Path -LiteralPath $env:PYTHON_EXE)) {
    $pythonExe = $env:PYTHON_EXE
}

if (-not $pythonExe) {
    $bundledPython = Join-Path $env:USERPROFILE '.cache\codex-runtimes\codex-primary-runtime\dependencies\python\python.exe'
    if (Test-Path -LiteralPath $bundledPython) {
        $pythonExe = $bundledPython
    }
}

if (-not $pythonExe) {
    $pythonCommand = Get-Command python -ErrorAction SilentlyContinue
    if ($pythonCommand) {
        $pythonExe = $pythonCommand.Source
    }
}

if (-not $pythonExe) {
    $pythonCommand = Get-Command py -ErrorAction SilentlyContinue
    if ($pythonCommand) {
        $pythonExe = $pythonCommand.Source
        $pythonArgs = @('-3')
    }
}

if (-not $pythonExe) {
    throw "Python 3 was not found. Install Python 3, set PYTHON_EXE, or add Python to PATH."
}

& $pythonExe @pythonArgs -m app
exit $LASTEXITCODE