/* 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 System.Text;
using OpenSearch.Net;
using OpenSearch.Client;

namespace Tests.Core.Client
{
	public static class FixedResponseClient
	{
		public static IOpenSearchClient Create(
			object response,
			int statusCode = 200,
			Func<ConnectionSettings, ConnectionSettings> modifySettings = null,
			string contentType = RequestData.MimeType,
			Exception exception = null
		)
		{
			var settings = CreateConnectionSettings(response, statusCode, modifySettings, contentType, exception);
			return new OpenSearchClient(settings);
		}

		public static ConnectionSettings CreateConnectionSettings(
			object response,
			int statusCode = 200,
			Func<ConnectionSettings, ConnectionSettings> modifySettings = null,
			string contentType = RequestData.MimeType,
			Exception exception = null
		)
		{
			var serializer = TestClient.Default.RequestResponseSerializer;
			byte[] responseBytes;
			switch (response)
			{
				case string s:
					responseBytes = Encoding.UTF8.GetBytes(s);
					break;
				case byte[] b:
					responseBytes = b;
					break;
				default:
				{
					responseBytes = contentType == RequestData.MimeType
						? serializer.SerializeToBytes(response, TestClient.Default.ConnectionSettings.MemoryStreamFactory)
						: Encoding.UTF8.GetBytes(response.ToString());
					break;
				}
			}

			var connection = new InMemoryConnection(responseBytes, statusCode, exception, contentType);
			var connectionPool = new SingleNodeConnectionPool(new Uri("http://localhost:9200"));
			var defaultSettings = new ConnectionSettings(connectionPool, connection)
				.DefaultIndex("default-index");
			var settings = modifySettings != null ? modifySettings(defaultSettings) : defaultSettings;
			return settings;
		}
	}
}