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/*
 * Copyright 2014 Nicolas Morel
 *
 * 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.dominokit.jacksonapt.ser.array.dd;

import org.dominokit.jacksonapt.JsonSerializationContext;
import org.dominokit.jacksonapt.JsonSerializer;
import org.dominokit.jacksonapt.JsonSerializerParameters;
import org.dominokit.jacksonapt.stream.JsonWriter;

/**
 * Default {@link org.dominokit.jacksonapt.JsonSerializer} implementation for 2D array of double.
 */
public class PrimitiveDoubleArray2dJsonSerializer extends JsonSerializer {

  private static final PrimitiveDoubleArray2dJsonSerializer INSTANCE =
      new PrimitiveDoubleArray2dJsonSerializer();

  /**
   * getInstance
   *
   * @return an instance of {@link
   *     org.dominokit.jacksonapt.ser.array.dd.PrimitiveDoubleArray2dJsonSerializer}
   */
  public static PrimitiveDoubleArray2dJsonSerializer getInstance() {
    return INSTANCE;
  }

  private PrimitiveDoubleArray2dJsonSerializer() {}

  /** {@inheritDoc} */
  @Override
  protected boolean isEmpty(double[][] value) {
    return null == value || value.length == 0;
  }

  /** {@inheritDoc} */
  @Override
  public void doSerialize(
      JsonWriter writer,
      double[][] values,
      JsonSerializationContext ctx,
      JsonSerializerParameters params) {
    if (!ctx.isWriteEmptyJsonArrays() && values.length == 0) {
      writer.cancelName();
      return;
    }

    writer.beginArray();
    for (double[] array : values) {
      writer.beginArray();
      for (double value : array) {
        writer.value(value);
      }
      writer.endArray();
    }
    writer.endArray();
  }
}