/* 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.Runtime.Serialization;
using OpenSearch.Net.Utf8Json;
// ReSharper disable InconsistentNaming

namespace OpenSearch.Client.Specification.IndicesApi
{
	/// <summary>
	/// A similarity with Bayesian smoothing using Dirichlet priors.
	/// </summary>
	public interface ILMDirichletSimilarity : ISimilarity
	{
		/// <summary>
		/// The mu parameter. Defaults to 2000.
		/// </summary>
		[DataMember(Name ="mu")]
		[JsonFormatter(typeof(NullableStringIntFormatter))]
		int? Mu { get; set; }
	}

	/// <inheritdoc />
	public class LMDirichletSimilarity : ILMDirichletSimilarity
	{
		/// <inheritdoc />
		public int? Mu { get; set; }

		public string Type => "LMDirichlet";
	}

	/// <inheritdoc />
	public class LMDirichletSimilarityDescriptor
		: DescriptorBase<LMDirichletSimilarityDescriptor, ILMDirichletSimilarity>, ILMDirichletSimilarity
	{
		int? ILMDirichletSimilarity.Mu { get; set; }
		string ISimilarity.Type => "LMDirichlet";

		/// <inheritdoc />
		public LMDirichletSimilarityDescriptor Mu(int? mu) => Assign(mu, (a, v) => a.Mu = v);
	}
}