/* 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.Runtime.Serialization;
using OpenSearch.Net.Utf8Json;

namespace OpenSearch.Client
{
	[InterfaceDataContract]
	[ReadAs(typeof(BoostingQueryDescriptor<object>))]
	public interface IBoostingQuery : IQuery
	{
		[DataMember(Name ="negative_boost")]
		double? NegativeBoost { get; set; }

		[DataMember(Name ="negative")]
		QueryContainer NegativeQuery { get; set; }

		[DataMember(Name ="positive")]
		QueryContainer PositiveQuery { get; set; }
	}

	public class BoostingQuery : QueryBase, IBoostingQuery
	{
		public double? NegativeBoost { get; set; }
		public QueryContainer NegativeQuery { get; set; }
		public QueryContainer PositiveQuery { get; set; }
		protected override bool Conditionless => IsConditionless(this);

		internal override void InternalWrapInContainer(IQueryContainer c) => c.Boosting = this;

		internal static bool IsConditionless(IBoostingQuery q) => q.NegativeQuery.NotWritable() && q.PositiveQuery.NotWritable();
	}

	public class BoostingQueryDescriptor<T>
		: QueryDescriptorBase<BoostingQueryDescriptor<T>, IBoostingQuery>
			, IBoostingQuery where T : class
	{
		protected override bool Conditionless => BoostingQuery.IsConditionless(this);
		double? IBoostingQuery.NegativeBoost { get; set; }
		QueryContainer IBoostingQuery.NegativeQuery { get; set; }
		QueryContainer IBoostingQuery.PositiveQuery { get; set; }

		public BoostingQueryDescriptor<T> NegativeBoost(double? boost) => Assign(boost, (a, v) => a.NegativeBoost = v);

		public BoostingQueryDescriptor<T> Positive(Func<QueryContainerDescriptor<T>, QueryContainer> selector) =>
			Assign(selector, (a, v) => a.PositiveQuery = v?.Invoke(new QueryContainerDescriptor<T>()));

		public BoostingQueryDescriptor<T> Negative(Func<QueryContainerDescriptor<T>, QueryContainer> selector) =>
			Assign(selector, (a, v) => a.NegativeQuery = v?.Invoke(new QueryContainerDescriptor<T>()));
	}
}