//go:build windows

package main

import (
	"os/exec"
	"syscall"
)

// detachProcess starts the child on its own, the way PowerShell's Start-Process
// left the relaunched OpsLog.
//
// DETACHED_PROCESS gives it no console of ours, CREATE_NEW_PROCESS_GROUP takes
// it out of our group so a Ctrl-Break or a job-object cleanup aimed at the old
// instance cannot reach the new one. Deliberately NOT CREATE_NO_WINDOW and NOT
// HideWindow: SW_HIDE in the STARTUPINFO is what made the updated OpsLog start
// invisibly, and there is no console to suppress — OpsLog is linked for the
// Windows GUI subsystem.
func detachProcess(cmd *exec.Cmd) {
	const (
		detachedProcess       = 0x00000008
		createNewProcessGroup = 0x00000200
	)
	cmd.SysProcAttr = &syscall.SysProcAttr{
		CreationFlags: detachedProcess | createNewProcessGroup,
	}
}