package file

import (
	"fmt"
	"os"
	"os/exec"
	"path/filepath"
	"strings"
)

// 当前执行脚本路径
func GetCurPath() string {
	path, _ := exec.LookPath(os.Args[0])
	base := filepath.Base(path)
	path, _ = filepath.Abs(path)
	return strings.TrimSuffix(path, "/"+base)
}

// 项目根路径，携带有项目名称
func GetRootPath() string {
	dir, _ := os.Getwd()
	return dir
}

func GetFilePath(fileName string) (string, error) {
	// 当前执行脚本路径
	var curPath = func() string {
		path, _ := exec.LookPath(os.Args[0])
		path, _ = filepath.Abs(path)
		return filepath.Dir(path)
	}

	// 项目根路径，携带有项目名称
	var rootPath = func() string {
		path, _ := os.Getwd()
		return path
	}

	// 判断文件是否存在
	var exist = func(filename string) bool {
		_, err := os.Stat(filename)
		return err == nil || os.IsExist(err)
	}

	str, _ := filepath.Abs(fileName)
	if exist(str) {
		return str, nil
	}
	if strings.HasPrefix(fileName, "/") {
		if !exist(fileName) {
			return "", fmt.Errorf("%s not fond", fileName)
		}
		return fileName, nil
	}
	path1 := filepath.Clean(fmt.Sprintf("%s/%s", rootPath(), fileName))
	if !exist(path1) {
		path2 := filepath.Clean(fmt.Sprintf("%s/%s", curPath(), fileName))
		if !exist(path2) {
			return "", fmt.Errorf("%s and %s not fond", path1, path2)
		}
		return path2, nil
	}
	return path1, nil
}