/* 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.Linq;
using OpenSearch.OpenSearch.Xunit.XunitPlumbing;
using FluentAssertions;
using OpenSearch.Client;
using Tests.Core.ManagedOpenSearch.Clusters;
using Tests.Domain;
using Tests.Framework.EndpointTests.TestState;

#pragma warning disable 618 //Testing an obsolete method

namespace Tests.QueryDsl.Compound.Dismax
{
	public class DismaxQueryUsageTests : QueryDslUsageTestsBase
	{
		public DismaxQueryUsageTests(ReadOnlyCluster i, EndpointUsage usage) : base(i, usage) { }

		protected override ConditionlessWhen ConditionlessWhen => new ConditionlessWhen<IDisMaxQuery>(a => a.DisMax)
		{
			q => q.Queries = null,
			q => q.Queries = Enumerable.Empty<QueryContainer>(),
			q => q.Queries = new[] { ConditionlessQuery },
		};

		protected override NotConditionlessWhen NotConditionlessWhen => new NotConditionlessWhen<IDisMaxQuery>(a => a.DisMax)
		{
			q => q.Queries = new[] { VerbatimQuery },
			q => q.Queries = new[] { VerbatimQuery, ConditionlessQuery },
		};

		protected override QueryContainer QueryInitializer => new DisMaxQuery()
		{
			Name = "named_query",
			Boost = 1.1,
			TieBreaker = 0.11,
			Queries = new QueryContainer[]
			{
				new MatchAllQuery() { Name = "query1" },
				new MatchAllQuery() { Name = "query2" },
			}
		};

		protected override object QueryJson => new
		{
			dis_max = new
			{
				_name = "named_query",
				boost = 1.1,
				queries = new[]
				{
					new { match_all = new { _name = "query1" } },
					new { match_all = new { _name = "query2" } }
				},
				tie_breaker = 0.11
			}
		};

		protected override QueryContainer QueryFluent(QueryContainerDescriptor<Project> q) => q
			.DisMax(c => c
				.Name("named_query")
				.Boost(1.1)
				.TieBreaker(0.11)
				.Queries(
					qq => qq.MatchAll(m => m.Name("query1")),
					qq => qq.MatchAll(m => m.Name("query2"))
				)
			);

		[U]
		public void NullQueryDoesNotCauseANullReferenceException()
		{
			Action query = () => Client.Search<Project>(s => s
				.Query(q => q
					.DisMax(dm => dm
						.Queries(
							dmq => dmq.Term(t => t.Name, null)
						)
					)
				)
			);

			query.Should().NotThrow();
		}
	}
}