/* 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.Collections.Generic;
using System.Linq;
using OpenSearch.Client;
using Tests.Core.ManagedOpenSearch.Clusters;
using Tests.Domain;
using Tests.Framework.EndpointTests.TestState;
using static OpenSearch.Client.Infer;

namespace Tests.Search.Request
{
	public class SearchAfterParamsUsageTests : SearchUsageTestBase
	{
		public SearchAfterParamsUsageTests(ReadOnlyCluster cluster, EndpointUsage usage) : base(cluster, usage) { }

		protected override object ExpectJson =>
			new
			{
				sort = new object[]
				{
					new { numberOfCommits = new { order = "desc" } },
					new { name = new { order = "desc" } }
				},
				search_after = new object[]
				{
					Project.First.NumberOfCommits,
					Project.First.Name
				}
			};

		protected override Func<SearchDescriptor<Project>, ISearchRequest> Fluent => s => s
			.Sort(srt => srt
				.Descending(p => p.NumberOfCommits)
				.Descending(p => p.Name)
			)
			.SearchAfter(
				Project.First.NumberOfCommits,
				Project.First.Name
			);


		protected override SearchRequest<Project> Initializer =>
			new()
			{
				Sort = new List<ISort>
				{
					new FieldSort { Field = Field<Project>(p => p.NumberOfCommits), Order = SortOrder.Descending },
					new FieldSort { Field = Field<Project>(p => p.Name), Order = SortOrder.Descending }
				},
				SearchAfter = new List<object>
				{
					Project.First.NumberOfCommits,
					Project.First.Name,
				}
			};
	}

	public class SearchAfterUsageTests : SearchUsageTestBase
	{
		public SearchAfterUsageTests(ReadOnlyCluster cluster, EndpointUsage usage) : base(cluster, usage) { }

		private readonly IReadOnlyCollection<object> _previousSort = new List<object>
		{
			Project.First.NumberOfCommits,
			Project.First.Name
		};

		protected override object ExpectJson =>
			new
			{
				sort = new object[]
				{
					new { numberOfCommits = new { order = "desc" } },
					new { name = new { order = "desc" } }
				},
				search_after = new object[]
				{
					Project.First.NumberOfCommits,
					Project.First.Name
				}
			};

		protected override Func<SearchDescriptor<Project>, ISearchRequest> Fluent => s => s
			.Sort(srt => srt
				.Descending(p => p.NumberOfCommits)
				.Descending(p => p.Name)
			)
			.SearchAfter(_previousSort);

		protected override SearchRequest<Project> Initializer =>
			new()
			{
				Sort = new List<ISort>
				{
					new FieldSort { Field = Field<Project>(p => p.NumberOfCommits), Order = SortOrder.Descending },
					new FieldSort { Field = Field<Project>(p => p.Name), Order = SortOrder.Descending }
				},
				SearchAfter = _previousSort.ToList()
			};
	}
}