//go:build linux
// +build linux

package main

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

type mainProgramStarter struct{}

func (s *mainProgramStarter) GetMainName() string {
	return "main"
}

func (s *mainProgramStarter) Start(targetExe string) error {
	if err := os.Chmod(targetExe, 0755); err != nil {
		return err
	}
	cmd := exec.Command(targetExe)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr

	// Linux 下：先保持最简单，保证能跑
	return cmd.Start()
}

// 判断进程是否在运行
func (s *mainProgramStarter) IsProcessRunning(pid int) (bool, error) {
	if pid <= 0 {
		return false, nil
	}

	procPath := "/proc/" + strconv.Itoa(pid)
	_, err := os.Stat(procPath)
	if err == nil {
		return true, nil
	}

	if os.IsNotExist(err) {
		return false, nil
	}

	// 其他错误（例如权限问题）
	return false, err
}

// 杀掉进程
func (l *mainProgramStarter) KillProcess(pid int) error {
	cmd := exec.Command("kill", "-9", strconv.Itoa(pid))
	return cmd.Run()
}