package govue2

import (
	"encoding/json"
	"io/ioutil"
	"os"
	"os/exec"
	"path/filepath"
	"strings"
)

func pathExists(path string) bool {
	_, err := os.Stat(path)
	if err == nil {
		return true
	}
	if os.IsNotExist(err) {
		return false
	}
	return false
}

var selfFilePath string

func getSelfFilePath() string {
	if selfFilePath == "" {
		file, err := exec.LookPath(os.Args[0])
		if err != nil {
			return ""
		}
		path, err := filepath.Abs(file)
		if err != nil {
			return ""
		}
		i := strings.LastIndex(path, "/")
		if i < 0 {
			i = strings.LastIndex(path, "\\")
		}
		if i < 0 {
			return ""
		}
		selfFilePath, _ = filepath.Abs(string(path[0 : i+1]))
	}
	return selfFilePath
}

func jsonToFile(file string, v interface{}) bool {
	data, err := json.Marshal(v)
	if err != nil {
		return false
	}
	return ioutil.WriteFile(file, data, 0644) == nil
}

func jsonByFile(file string, v interface{}) {
	data, _ := ioutil.ReadFile(file)
	json.Unmarshal(data, v)
}