/* SPDX-License-Identifier: Apache-2.0
*
* The OpenSearch Contributors require contributions made to
* this file be licensed under the Apache-2.0 license or a
* compatible open source license.
*/
/*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*
*  Licensed to Elasticsearch B.V. under one or more contributor
*  license agreements. See the NOTICE file distributed with
*  this work for additional information regarding copyright
*  ownership. Elasticsearch B.V. licenses this file to you 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.
*/

using OpenSearch.Net.Utf8Json;

namespace OpenSearch.Client
{
	internal class GeoCoordinateFormatter : IJsonFormatter<GeoCoordinate>
	{
		public GeoCoordinate Deserialize(ref JsonReader reader, IJsonFormatterResolver formatterResolver)
		{
			if (reader.GetCurrentJsonToken() != JsonToken.BeginArray)
				return null;

			var doubles = formatterResolver.GetFormatter<double[]>()
				.Deserialize(ref reader, formatterResolver);
			switch (doubles.Length)
			{
				case 2:
					return new GeoCoordinate(doubles[1], doubles[0]);
				case 3:
					return new GeoCoordinate(doubles[1], doubles[0], doubles[2]);
				default:
					return null;
			}
		}

		public void Serialize(ref JsonWriter writer, GeoCoordinate value, IJsonFormatterResolver formatterResolver)
		{
			if (value == null)
			{
				writer.WriteNull();
				return;
			}

			writer.WriteBeginArray();
			writer.WriteDouble(value.Longitude);
			writer.WriteValueSeparator();
			writer.WriteDouble(value.Latitude);
			if (value.Z.HasValue)
			{
				writer.WriteValueSeparator();
				writer.WriteDouble(value.Z.Value);
			}
			writer.WriteEndArray();
		}
	}
}