// Copyright 2018 The OpenPitrix Authors. All rights reserved.
// Use of this source code is governed by a Apache license
// that can be found in the LICENSE file.

package jsonutil

import (
	"encoding/json"
	"log"

	"github.com/bitly/go-simplejson"
)

func Encode(o interface{}) ([]byte, error) {
	return json.Marshal(o)
}

func Decode(y []byte, o interface{}) error {
	return json.Unmarshal(y, o)
}

func ToString(o interface{}) string {
	b, err := Encode(o)
	if err != nil {
		return ""
	}

	return string(b)
}

// FIXME: need improve performance
func ToJson(o interface{}) Json {
	var j Json
	j = &fakeJson{simplejson.New()}
	b, err := Encode(o)
	if err != nil {
		log.Printf("Failed to encode [%+v] to []byte, error: %+v", o, err)
		return j
	}
	j, err = NewJson(b)
	if err != nil {
		log.Printf("Failed to decode [%+v] to Json, error: %+v", o, err)
	}
	return j
}

type fakeJson struct {
	*simplejson.Json
}

func NewJson(y []byte) (Json, error) {
	j, err := simplejson.NewJson(y)
	return &fakeJson{j}, err
}

func (j *fakeJson) Get(key string) Json {
	return &fakeJson{j.Json.Get(key)}
}

func (j *fakeJson) GetPath(branch ...string) Json {
	return &fakeJson{j.Json.GetPath(branch...)}
}

func (j *fakeJson) CheckGet(key string) (Json, bool) {
	result, ok := j.Json.CheckGet(key)
	return &fakeJson{result}, ok
}

//
//func (j *fakeJson) UnmarshalJSON(p []byte) error {
//	return j.Json.UnmarshalJSON(p)
//}
//
//func (j *fakeJson) MarshalJSON() ([]byte, error) {
//	return j.Json.MarshalJSON()
//}