com.codeheadsystems.gamelib.net.manager.JsonManager Maven / Gradle / Ivy

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/*
 *   Copyright (c) 2023. Ned Wolpert 
 *
 *    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 com.codeheadsystems.gamelib.net.manager;

import com.codeheadsystems.gamelib.net.exception.JsonException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import javax.inject.Inject;
import javax.inject.Singleton;

/**
 * The type Json manager.
 */
@Singleton
public class JsonManager {

  private final ObjectMapper objectMapper;

  /**
   * Instantiates a new Json manager.
   *
   * @param objectMapper the object mapper
   */
  @Inject
  public JsonManager(final ObjectMapper objectMapper) {
    this.objectMapper = objectMapper;
  }


  /**
   * To json string.
   *
   * @param     the type parameter
   * @param object the object
   * @return the string
   */
  public  String toJson(final T object) {
    return toJson(object, false);
  }


  /**
   * To json string.
   *
   * @param          the type parameter
   * @param object      the object
   * @param withNewLine the with new line
   * @return the string
   */
  public  String toJson(final T object,
                           final boolean withNewLine) {
    try {
      final String result = objectMapper.writeValueAsString(object);
      return (withNewLine ? result + "\n" : result);
    } catch (JsonProcessingException e) {
      throw new JsonException("Unable to convert to json: " + object, e) {
      };
    }
  }

  /**
   * From json t.
   *
   * @param    the type parameter
   * @param json  the json
   * @param clazz the clazz
   * @return the t
   */
  public  T fromJson(final String json, final Class clazz) {
    try {
      return objectMapper.readValue(json, clazz);
    } catch (JsonProcessingException e) {
      throw new JsonException("Unable to convert from json: " + clazz, e);
    }
  }

}