package response

import (
	"bytes"
	"encoding/json"
)

const (
	JsonMsgDefaultOk     = "ok"
	JsonMsgDefaultFailed = "unknown"
)

type Json struct {
	Code   int         `json:"code"`
	Data   interface{} `json:"data"`
	Msg    string      `json:"msg"`
	Status bool        `json:"status"`
}

func (j *Json) String() string {
	s, _ := j.ToString()
	return s
}

func (j *Json) ToString() (str string, err error) {
	var b []byte
	b, err = json.Marshal(j)
	return bytes.NewBuffer(b).String(), err
}

func NewJsonByDefaultSuccess(data ...interface{}) *Json {
	return NewJson(true, 0, JsonMsgDefaultOk, data...)
}

func NewJsonByDefaultFailed(data ...interface{}) *Json {
	return NewJson(false, 1, JsonMsgDefaultFailed, data...)
}

func NewJson(status bool, code int, msg string, data ...interface{}) *Json {
	if len(data) > 0 {
		return &Json{
			Code:   code,
			Data:   data[0],
			Msg:    msg,
			Status: status,
		}
	} else {
		return &Json{
			Code:   code,
			Data:   nil,
			Msg:    msg,
			Status: status,
		}
	}
}