// Package command ...
//
// Description : command ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2022-05-20 21:48
package command

import (
	"errors"
	"os"
	"os/exec"
	"strings"
	"time"

	"git.zhangdeman.cn/zhangdeman/command/define"
)

// Execute 执行系统命令
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 21:49 2022/5/20
func Execute(workDir string, command string, param []string) *define.Result {

	//执行命令
	result := &define.Result{
		WorkDir:    workDir,
		Param:      param,
		Error:      nil,
		Output:     nil,
		StartTime:  time.Now().UnixNano(),
		FinishTime: 0,
	}
	defer func() {
		result.FinishTime = time.Now().UnixNano()
	}()
	if len(workDir) == 0 {
		// 默认为项目根目录
		result.WorkDir, result.Error = os.Getwd()
	}
	if nil != result.Error {
		return result
	}
	var (
		fileInfo os.FileInfo
	)
	if fileInfo, result.Error = os.Stat(result.WorkDir); nil != result.Error {
		if !os.IsExist(result.Error) {
			return result
		}
		// 目录已存在
		result.Error = nil
	}

	if !fileInfo.IsDir() {
		result.Error = errors.New(result.WorkDir + " 工作目录不存在")
	}

	if result.CmdPath, result.Error = Check(command); nil != result.Error {
		return result
	}
	cmdInstance := exec.Command(command, param...)
	cmdInstance.Dir = result.WorkDir
	result.Output, result.Error = cmdInstance.CombinedOutput()
	result.Output = []byte(strings.TrimSpace(string(result.Output)))
	return result
}

// Check 检测命令
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 21:57 2022/5/20
func Check(command string) (string, error) {
	if path, err := exec.LookPath(command); err != nil {
		return "", errors.New(command + " 命令不存在 : " + err.Error())
	} else {
		return path, nil
	}
}