//go:build !windows

package main

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

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

func applyTrainingLowPriorityAfterStart(cmd *exec.Cmd, enabled bool) {
	if cmd == nil || cmd.Process == nil || !enabled {
		return
	}

	_ = syscall.Setpriority(syscall.PRIO_PROCESS, cmd.Process.Pid, 10)
}

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

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

	cmd.SysProcAttr.Setpgid = true
}

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

	pid := cmd.Process.Pid
	_ = syscall.Kill(-pid, syscall.SIGTERM)
	time.Sleep(800 * time.Millisecond)
	_ = syscall.Kill(-pid, syscall.SIGKILL)
	_ = cmd.Process.Kill()
}