//go:build windows

package main

import (
	"os/exec"
	"strconv"
	"syscall"
)

const windowsBelowNormalPriorityClass = 0x00004000
const windowsCreateNewProcessGroup = 0x00000200

func applyTrainingLowPriorityBeforeStart(cmd *exec.Cmd, enabled bool) {
	if cmd == nil {
		return
	}

	if cmd.SysProcAttr == nil {
		cmd.SysProcAttr = &syscall.SysProcAttr{}
	}

	if enabled {
		cmd.SysProcAttr.CreationFlags |= windowsBelowNormalPriorityClass
	}
}

func applyTrainingLowPriorityAfterStart(cmd *exec.Cmd, enabled bool) {
	_ = cmd
	_ = enabled
}

func prepareTrainingCommandForCancel(cmd *exec.Cmd) {
	if cmd == nil {
		return
	}

	if cmd.SysProcAttr == nil {
		cmd.SysProcAttr = &syscall.SysProcAttr{}
	}

	cmd.SysProcAttr.CreationFlags |= windowsCreateNewProcessGroup
}

func terminateTrainingCommand(cmd *exec.Cmd) {
	if cmd == nil || cmd.Process == nil || cmd.Process.Pid <= 0 {
		return
	}

	killCmd := exec.Command("taskkill", "/PID", strconv.Itoa(cmd.Process.Pid), "/T", "/F")
	hideCommandWindow(killCmd)
	_ = killCmd.Run()
	_ = cmd.Process.Kill()
}