wallet_json.go

// Copyright 2019 - 2023 Weald Technology Trading.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package keystore

import (
	"encoding/json"
	"fmt"

	"github.com/google/uuid"
	"github.com/pkg/errors"
)

// MarshalJSON implements custom JSON marshaller.
func (w *wallet) MarshalJSON() ([]byte, error) {
	data := make(map[string]any)
	data["uuid"] = w.id.String()
	data["name"] = w.name
	data["version"] = w.version
	data["type"] = walletType

	return json.Marshal(data)
}

// UnmarshalJSON implements custom JSON unmarshaller.
//
//nolint:cyclop,funlen,nestif
func (w *wallet) UnmarshalJSON(data []byte) error {
	var v map[string]any
	if err := json.Unmarshal(data, &v); err != nil {
		return err
	}
	if val, exists := v["type"]; exists {
		dataWalletType, ok := val.(string)
		if !ok {
			return errors.New("wallet type invalid")
		}
		if dataWalletType != walletType {
			return fmt.Errorf("wallet type %q unexpected", dataWalletType)
		}
	} else {
		return errors.New("wallet type missing")
	}
	if val, exists := v["uuid"]; exists {
		idStr, ok := val.(string)
		if !ok {
			return errors.New("wallet ID invalid")
		}
		id, err := uuid.Parse(idStr)
		if err != nil {
			return errors.Wrap(err, "failed to parse wallet ID")
		}
		w.id = id
	} else {
		// Used to be ID; remove with V2.0
		if val, exists := v["id"]; exists {
			idStr, ok := val.(string)
			if !ok {
				return errors.New("wallet ID invalid")
			}
			id, err := uuid.Parse(idStr)
			if err != nil {
				return errors.Wrap(err, "failed to parse wallet ID")
			}
			w.id = id
		} else {
			return errors.New("wallet ID missing")
		}
	}
	if val, exists := v["name"]; exists {
		name, ok := val.(string)
		if !ok {
			return errors.New("wallet name invalid")
		}
		w.name = name
	} else {
		return errors.New("wallet name missing")
	}
	if val, exists := v["version"]; exists {
		version, ok := val.(float64)
		if !ok {
			return errors.New("wallet version invalid")
		}
		w.version = uint(version)
	} else {
		return errors.New("wallet version missing")
	}

	return nil
}