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/* 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.camunda.spin.impl.json.tree;

import java.text.DateFormat;

import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;

/**
 * Provides methods to configure Jackson serialization and deserialization features.
 *
 * @author Thorben Lindhauer
 */
public class JsonJacksonMapperConfiguration
  extends AbstractJsonJacksonDataFormatConfiguration
  implements JsonJacksonTreeConfigurable {

  protected ObjectMapper.DefaultTyping typing;
  protected JsonTypeInfo.As as;

  protected DateFormat dateFormat;

  public JsonJacksonMapperConfiguration(JsonJacksonTreeDataFormat dataFormat) {
    super(dataFormat);
  }

  public JsonJacksonMapperConfiguration(JsonJacksonTreeDataFormat dataFormat,
      JsonJacksonMapperConfiguration mapperConfiguration) {
    super(dataFormat, mapperConfiguration);
    this.typing = mapperConfiguration.typing;
    this.as = mapperConfiguration.as;
    this.dateFormat = mapperConfiguration.dateFormat;
  }

  public JsonJacksonMapperConfiguration enableDefaultTyping(ObjectMapper.DefaultTyping typing, JsonTypeInfo.As as) {
    dataFormat.invalidateCachedObjectMapper();

    this.typing = typing;
    this.as = as;
    return this;
  }

  public ObjectMapper.DefaultTyping getDefaultTyping() {
    return typing;
  }

  public JsonTypeInfo.As getDefaultTypingFormat() {
    return as;
  }

  public void applyTo(ObjectMapper mapper) {
    if (typing != null && as != null) {
      mapper.enableDefaultTyping(typing, as);
    }

    for (DeserializationFeature deserializationFeature : DeserializationFeature.values()) {
      mapper.configure(deserializationFeature, getValue(deserializationFeature));
    }

    for (SerializationFeature serializationFeature : SerializationFeature.values()) {
      mapper.configure(serializationFeature, getValue(serializationFeature));
    }

    mapper.setDateFormat(dateFormat);
  }

  public JsonJacksonMapperConfiguration config(DeserializationFeature feature, Object value) {
    return config(feature.name(), value);
  }

  public Boolean getValue(DeserializationFeature feature) {
    Boolean value = (Boolean) configuration.get(feature.name());
    if (value == null) {
      return feature.enabledByDefault();
    }
    else {
      return value;
    }
  }

  public JsonJacksonMapperConfiguration config(SerializationFeature feature, Object value) {
    return config(feature.name(), value);
  }

  public Boolean getValue(SerializationFeature feature) {
    Boolean value = (Boolean) configuration.get(feature.name());
    if (value == null) {
      return feature.enabledByDefault();
    }
    else {
      return value;
    }
  }

  protected JsonJacksonMapperConfiguration thisConfiguration() {
    return this;
  }

  public JsonJacksonMapperConfiguration dateFormat(DateFormat dateFormat) {
    dataFormat.invalidateCachedObjectMapper();

    this.dateFormat = dateFormat;
    return this;
  }

  public DateFormat getDateFormat() {
    return dateFormat;
  }

  public void disableDefaultTyping() {
    dataFormat.invalidateCachedObjectMapper();
    this.typing = null;
    this.as = null;

  }

}