/* 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;

namespace OpenSearch.Client
{
	[InterfaceDataContract]
	[ReadAs(typeof(LinearInterpolationSmoothingModel))]
	public interface ILinearInterpolationSmoothingModel : ISmoothingModel
	{
		[DataMember(Name = "bigram_lambda")]
		double? BigramLambda { get; set; }

		[DataMember(Name = "trigram_lambda")]
		double? TrigramLambda { get; set; }

		[DataMember(Name = "unigram_lambda")]
		double? UnigramLambda { get; set; }
	}

	public class LinearInterpolationSmoothingModel : SmoothingModelBase, ILinearInterpolationSmoothingModel
	{
		public double? BigramLambda { get; set; }
		public double? TrigramLambda { get; set; }
		public double? UnigramLambda { get; set; }

		internal override void WrapInContainer(ISmoothingModelContainer container) => container.LinearInterpolation = this;
	}

	public class LinearInterpolationSmoothingModelDescriptor
		: DescriptorBase<LinearInterpolationSmoothingModelDescriptor, ILinearInterpolationSmoothingModel>, ILinearInterpolationSmoothingModel
	{
		double? ILinearInterpolationSmoothingModel.BigramLambda { get; set; }
		double? ILinearInterpolationSmoothingModel.TrigramLambda { get; set; }
		double? ILinearInterpolationSmoothingModel.UnigramLambda { get; set; }

		public LinearInterpolationSmoothingModelDescriptor TrigramLambda(double? lambda) => Assign(lambda, (a, v) => a.TrigramLambda = v);

		public LinearInterpolationSmoothingModelDescriptor UnigramLambda(double? lambda) => Assign(lambda, (a, v) => a.UnigramLambda = v);

		public LinearInterpolationSmoothingModelDescriptor BigramLambda(double? lambda) => Assign(lambda, (a, v) => a.BigramLambda = v);
	}
}