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/*
 * Copyright (C) 2023-2024 Thomas Akehurst
 *
 * 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 org.wiremock.grpc.internal;

import com.github.tomakehurst.wiremock.common.Exceptions;
import com.google.protobuf.Message;
import com.google.protobuf.MessageOrBuilder;
import com.google.protobuf.TypeRegistry;
import com.google.protobuf.util.JsonFormat;

public class JsonMessageConverter {

  private final JsonFormat.Printer jsonPrinter;
  private final JsonFormat.Parser jsonParser;

  public JsonMessageConverter(TypeRegistry typeRegistry) {
    jsonPrinter = JsonFormat.printer().usingTypeRegistry(typeRegistry);
    jsonParser = JsonFormat.parser().usingTypeRegistry(typeRegistry);
  }

  public String toJson(MessageOrBuilder message) {
    return Exceptions.uncheck(() -> jsonPrinter.print(message), String.class);
  }

  @SuppressWarnings("unchecked")
  public  T toMessage(String json, B builder) {
    Exceptions.uncheck(() -> jsonParser.merge(json, builder));
    return (T) builder.build();
  }
}