$ErrorActionPreference = "Stop"

$ScriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
$RootDir = Resolve-Path (Join-Path $ScriptDir "..")

$BackendDir = Join-Path $RootDir "offline-backend-20260512\backend"
$FrontendDir = Join-Path $RootDir "frontend-web"
$RuntimeDir = Join-Path $RootDir ".runtime"
$LogDir = Join-Path $RuntimeDir "logs"
$PidDir = Join-Path $RuntimeDir "pids"

$BackendHost = if ($env:BACKEND_HOST) { $env:BACKEND_HOST } else { "0.0.0.0" }
$BackendPort = if ($env:BACKEND_PORT) { $env:BACKEND_PORT } else { "8001" }
$FrontendHost = if ($env:FRONTEND_HOST) { $env:FRONTEND_HOST } else { "0.0.0.0" }
$FrontendPort = if ($env:FRONTEND_PORT) { $env:FRONTEND_PORT } else { "5174" }

$HostIp = if ($env:HOST_IP) { $env:HOST_IP } else { "127.0.0.1" }
$BackendPublicBaseUrl = if ($env:BACKEND_PUBLIC_BASE_URL) { $env:BACKEND_PUBLIC_BASE_URL } else { "http://${HostIp}:${BackendPort}" }
$FrontendPublicBaseUrl = if ($env:FRONTEND_PUBLIC_BASE_URL) { $env:FRONTEND_PUBLIC_BASE_URL } else { "http://${HostIp}:${FrontendPort}" }
$GatewayCorsOrigins = if ($env:GATEWAY_CORS_ORIGINS) {
    $env:GATEWAY_CORS_ORIGINS
} else {
    "http://localhost:${FrontendPort},http://127.0.0.1:${FrontendPort},http://${HostIp}:${FrontendPort},http://localhost:8080,http://127.0.0.1:8080"
}

$BackendPython = Join-Path $BackendDir ".venv\Scripts\python.exe"
$BackendVendorDir = if ($env:BACKEND_VENDOR_DIR) { $env:BACKEND_VENDOR_DIR } else { Join-Path $BackendDir ".deer-flow\python-vendor" }

New-Item -ItemType Directory -Force -Path $LogDir, $PidDir | Out-Null

function Test-PidRunning {
    param([string]$PidFile)
    if (-not (Test-Path -LiteralPath $PidFile)) { return $false }
    $rawPid = (Get-Content -LiteralPath $PidFile -ErrorAction SilentlyContinue | Select-Object -First 1)
    $processId = 0
    if (-not [int]::TryParse([string]$rawPid, [ref]$processId)) { return $false }
    return [bool](Get-Process -Id $processId -ErrorAction SilentlyContinue)
}

function Stop-ProcessTree {
    param([int]$ProcessId)
    $children = Get-CimInstance Win32_Process -Filter "ParentProcessId=$ProcessId" -ErrorAction SilentlyContinue
    foreach ($child in $children) {
        Stop-ProcessTree -ProcessId ([int]$child.ProcessId)
    }
    $proc = Get-Process -Id $ProcessId -ErrorAction SilentlyContinue
    if ($proc) {
        Stop-Process -Id $ProcessId -Force -ErrorAction SilentlyContinue
    }
}

function ConvertTo-PSLiteral {
    param([string]$Value)
    return "'" + ($Value -replace "'", "''") + "'"
}