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

namespace Tests.QueryDsl.TermLevel.TermsSet
{
	/**
	* Returns any documents that match with at least one or more of the provided terms. The terms are not
	* analyzed and thus must match exactly. The number of terms that must match varies per document and
	* is either controlled by a minimum should match field or computed per document in a minimum should match script.
	*
	* Be sure to read the OpenSearch documentation on {ref_current}/query-dsl-terms-set-query.html[Terms Set query] for more information.
	*
	* [float]
	*=== Minimum should match with field
	*
	* The field that controls the number of required terms that must match must be a number field
	*/
	public class TermsSetQueryUsageTests : QueryDslUsageTestsBase
	{
		public TermsSetQueryUsageTests(ReadOnlyCluster cluster, EndpointUsage usage) : base(cluster, usage) { }

		protected override ConditionlessWhen ConditionlessWhen => new ConditionlessWhen<ITermsSetQuery>(a => a.TermsSet)
		{
			q => q.Field = null,
			q => q.Terms = null,
			q => q.Terms = Enumerable.Empty<object>(),
			q => q.Terms = new[] { "" },
			q =>
			{
				q.MinimumShouldMatchField = null;
				q.MinimumShouldMatchScript = null;
			}
		};

		protected override QueryContainer QueryInitializer => new TermsSetQuery
		{
			Name = "named_query",
			Boost = 1.1,
			Field = Infer.Field<Project>(p => p.Branches),
			Terms = new[] { "main", "dev" },
			MinimumShouldMatchField = Infer.Field<Project>(p => p.RequiredBranches)
		};

		protected override object QueryJson => new
		{
			terms_set = new
			{
				branches = new
				{
					_name = "named_query",
					boost = 1.1,
					terms = new[] { "main", "dev" },
					minimum_should_match_field = "requiredBranches"
				}
			}
		};

		protected override QueryContainer QueryFluent(QueryContainerDescriptor<Project> q) => q
			.TermsSet(c => c
				.Name("named_query")
				.Boost(1.1)
				.Field(p => p.Branches)
				.Terms("main", "dev")
				.MinimumShouldMatchField(p => p.RequiredBranches)
			);
	}

	/**[float]
	*=== Minimum should match with script
	*
	* Scripts can also be used to control how many terms are required to match in a more dynamic way.
	*
	* The `params.num_terms` parameter is available in the script to indicate the number of
	* terms that have been specified in the query.
	*/
	public class TermsSetScriptQueryUsageTests : QueryDslUsageTestsBase
	{
		public TermsSetScriptQueryUsageTests(ReadOnlyCluster cluster, EndpointUsage usage) : base(cluster, usage) { }

		protected override QueryContainer QueryInitializer => new TermsSetQuery
		{
			Name = "named_query",
			Boost = 1.1,
			Field = Infer.Field<Project>(p => p.Branches),
			Terms = new[] { "main", "dev" },
			MinimumShouldMatchScript = new InlineScript("doc['requiredBranches'].size() == 0 ? params.num_terms : Math.min(params.num_terms, doc['requiredBranches'].value)")
		};

		protected override object QueryJson => new
		{
			terms_set = new
			{
				branches = new
				{
					_name = "named_query",
					boost = 1.1,
					terms = new[] { "main", "dev" },
					minimum_should_match_script = new
					{
						source = "doc['requiredBranches'].size() == 0 ? params.num_terms : Math.min(params.num_terms, doc['requiredBranches'].value)"
					}
				}
			}
		};

		protected override QueryContainer QueryFluent(QueryContainerDescriptor<Project> q) => q
			.TermsSet(c => c
				.Name("named_query")
				.Boost(1.1)
				.Field(p => p.Branches)
				.Terms("main", "dev")
				.MinimumShouldMatchScript(s => s
					.Source("doc['requiredBranches'].size() == 0 ? params.num_terms : Math.min(params.num_terms, doc['requiredBranches'].value)")
				)
			);
	}
}