package types

import (
	"bytes"
	"encoding/json"

	"github.com/golang/protobuf/jsonpb"
)

//---------------------------------------------------------------------------
// override JSON marshalling so we dont emit defaults (ie. disable omitempty)
// note we need Unmarshal functions too because protobuf had the bright idea
// to marshal int64->string. cool. cool, cool, cool: https://developers.google.com/protocol-buffers/docs/proto3#json

var (
	jsonpbMarshaller = jsonpb.Marshaler{
		EnumsAsInts:  true,
		EmitDefaults: false,
	}
	jsonpbUnmarshaller = jsonpb.Unmarshaler{}
)

func (r *ResponseSetOption) MarshalJSON() ([]byte, error) {
	s, err := jsonpbMarshaller.MarshalToString(r)
	return []byte(s), err
}

func (r *ResponseSetOption) UnmarshalJSON(b []byte) error {
	reader := bytes.NewBuffer(b)
	return jsonpbUnmarshaller.Unmarshal(reader, r)
}

func (r *ResponseCheckTx) MarshalJSON() ([]byte, error) {
	s, err := jsonpbMarshaller.MarshalToString(r)
	return []byte(s), err
}

func (r *ResponseCheckTx) UnmarshalJSON(b []byte) error {
	reader := bytes.NewBuffer(b)
	return jsonpbUnmarshaller.Unmarshal(reader, r)
}

func (r *ResponseDeliverTx) MarshalJSON() ([]byte, error) {
	s, err := jsonpbMarshaller.MarshalToString(r)
	return []byte(s), err
}

func (r *ResponseDeliverTx) UnmarshalJSON(b []byte) error {
	reader := bytes.NewBuffer(b)
	return jsonpbUnmarshaller.Unmarshal(reader, r)
}

func (r *ResponseQuery) MarshalJSON() ([]byte, error) {
	s, err := jsonpbMarshaller.MarshalToString(r)
	return []byte(s), err
}

func (r *ResponseQuery) UnmarshalJSON(b []byte) error {
	reader := bytes.NewBuffer(b)
	return jsonpbUnmarshaller.Unmarshal(reader, r)
}

func (r *ResponseCommit) MarshalJSON() ([]byte, error) {
	s, err := jsonpbMarshaller.MarshalToString(r)
	return []byte(s), err
}

func (r *ResponseCommit) UnmarshalJSON(b []byte) error {
	reader := bytes.NewBuffer(b)
	return jsonpbUnmarshaller.Unmarshal(reader, r)
}

// Some compile time assertions to ensure we don't
// have accidental runtime surprises later on.

// jsonEncodingRoundTripper ensures that asserted
// interfaces implement both MarshalJSON and UnmarshalJSON
type jsonRoundTripper interface {
	json.Marshaler
	json.Unmarshaler
}

var _ jsonRoundTripper = (*ResponseCommit)(nil)
var _ jsonRoundTripper = (*ResponseQuery)(nil)
var _ jsonRoundTripper = (*ResponseDeliverTx)(nil)
var _ jsonRoundTripper = (*ResponseCheckTx)(nil)
var _ jsonRoundTripper = (*ResponseSetOption)(nil)