param (
    [int]$Port = 0
)

$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
$gatewayDir = Join-Path (Split-Path -Parent $scriptDir) "gateway"

if ($Port -le 0) {
    $envPort = $env:PORT -as [int]
    if ($envPort) {
        $Port = $envPort
    } else {
        $Port = 8765
    }
}

Write-Host "Starting FastAPI Gateway local dev server on port $Port..." -ForegroundColor Cyan
Push-Location $gatewayDir
try {
    # Check if virtual environment exists, if not, bootstrap it
    if (-not (Test-Path ".venv")) {
        Write-Host "Python virtual environment not found. Bootstrapping gateway environment..." -ForegroundColor Yellow
        
        # Verify Python is installed
        if (-not (Get-Command python -ErrorAction SilentlyContinue)) {
            Write-Error "Python was not found on your PATH. Please install Python 3.11+ and try again."
            return
        }
        
        Write-Host "Creating virtual environment in $gatewayDir\.venv..." -ForegroundColor Yellow
        & python -m venv .venv
        if ($LASTEXITCODE -ne 0 -or -not (Test-Path ".venv")) {
            Write-Error "Failed to create Python virtual environment."
            return
        }
        
        Write-Host "Installing gateway dependencies (pip install -e '.[dev]')..." -ForegroundColor Yellow
        & .venv\Scripts\pip install -e ".[dev]"
        if ($LASTEXITCODE -ne 0) {
            Write-Error "Failed to install gateway dependencies."
            return
        }
        Write-Host "Bootstrap complete!" -ForegroundColor Green
    }

    & .venv\Scripts\uvicorn app.main:app --reload --port $Port
} finally {
    Pop-Location
}