/* 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 System;
using OpenSearch.Net.Utf8Json;
using OpenSearch.Net.Utf8Json.Internal;


namespace OpenSearch.Client
{
	internal class BulkResponseItemFormatter : IJsonFormatter<BulkResponseItemBase>
	{
		private static readonly AutomataDictionary Operations = new AutomataDictionary
		{
			{ "delete", 0 },
			{ "update", 1 },
			{ "index", 2 },
			{ "create", 3 }
		};

		public BulkResponseItemBase Deserialize(ref JsonReader reader, IJsonFormatterResolver formatterResolver)
		{
			BulkResponseItemBase bulkResponseItem = null;

			if (reader.GetCurrentJsonToken() != JsonToken.BeginObject)
			{
				reader.ReadNextBlock();
				return null;
			}

			reader.ReadIsBeginObjectWithVerify();
			var operation = reader.ReadPropertyNameSegmentRaw();
			if (Operations.TryGetValue(operation, out var value))
			{
				switch (value)
				{
					case 0:
						bulkResponseItem = formatterResolver.GetFormatter<BulkDeleteResponseItem>()
							.Deserialize(ref reader, formatterResolver);
						break;
					case 1:
						bulkResponseItem = formatterResolver.GetFormatter<BulkUpdateResponseItem>()
							.Deserialize(ref reader, formatterResolver);
						break;
					case 2:
						bulkResponseItem = formatterResolver.GetFormatter<BulkIndexResponseItem>()
							.Deserialize(ref reader, formatterResolver);
						break;
					case 3:
						bulkResponseItem = formatterResolver.GetFormatter<BulkCreateResponseItem>()
							.Deserialize(ref reader, formatterResolver);
						break;
				}
			}
			else
				reader.ReadNextBlock();

			reader.ReadIsEndObjectWithVerify();
			return bulkResponseItem;
		}

		public void Serialize(ref JsonWriter writer, BulkResponseItemBase value, IJsonFormatterResolver formatterResolver) =>
			throw new NotSupportedException();
	}
}