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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.
 *
 * @param  Type of the elements inside the array
 * @author Nicolas Morel
 * @version $Id: $
 */
public class Array2dJsonSerializer extends JsonSerializer {

    /**
     * newInstance
     *
     * @param serializer {@link org.dominokit.jacksonapt.JsonSerializer} used to serialize the objects inside the array.
     * @param         Type of the elements inside the array
     * @return a new instance of {@link org.dominokit.jacksonapt.ser.array.dd.Array2dJsonSerializer}
     */
    public static  Array2dJsonSerializer newInstance(JsonSerializer serializer) {
        return new Array2dJsonSerializer(serializer);
    }

    private final JsonSerializer serializer;

    /**
     * Constructor for Array2dJsonSerializer.
     *
     * @param serializer {@link org.dominokit.jacksonapt.JsonSerializer} used to serialize the objects inside the array.
     */
    protected Array2dJsonSerializer(JsonSerializer serializer) {
        if (null == serializer) {
            throw new IllegalArgumentException("serializer cannot be null");
        }
        this.serializer = serializer;
    }

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

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

        writer.beginArray();
        for (T[] array : values) {
            writer.beginArray();
            for (T value : array) {
                serializer.serialize(writer, value, ctx, params);
            }
            writer.endArray();
        }
        writer.endArray();
    }
}