$ErrorActionPreference = "Stop"

if (Test-Path -LiteralPath ".env") {
    Get-Content -LiteralPath ".env" | ForEach-Object {
        $line = $_.Trim()
        if ($line -and -not $line.StartsWith("#") -and $line.Contains("=")) {
            $name, $value = $line -split "=", 2
            [Environment]::SetEnvironmentVariable($name.Trim(), $value.Trim(), "Process")
        }
    }
}

if (-not $env:MIMO_API_KEY) {
    Write-Error "MIMO_API_KEY is not set. Copy .env.example to .env and add your Xiaomi MiMo API key."
}

$hostAddress = if ($env:HOST) { $env:HOST } else { "127.0.0.1" }
$portNumber = if ($env:PORT) { $env:PORT } else { "8787" }

$installedPython = Join-Path $env:LOCALAPPDATA "Programs\Python\Python313\python.exe"
if (Test-Path -LiteralPath $installedPython) {
    & $installedPython -m uvicorn mimo_gateway:app --host $hostAddress --port $portNumber
    exit $LASTEXITCODE
}

$python = Get-Command python -ErrorAction SilentlyContinue
if ($python -and $python.Source -notlike "*WindowsApps*") {
    & $python.Source -m uvicorn mimo_gateway:app --host $hostAddress --port $portNumber
    exit $LASTEXITCODE
}

$pyLauncher = Get-Command py -ErrorAction SilentlyContinue
if ($pyLauncher) {
    & $pyLauncher.Source -3 -m uvicorn mimo_gateway:app --host $hostAddress --port $portNumber
    exit $LASTEXITCODE
}

Write-Error "Python 3.11 or newer was not found. Install Python, then run this script again."