/* 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;

namespace OpenSearch.Client
{
	/// <summary>
	///  A token filter of type lowercase that normalizes token text to lower case.
	/// <para> Lowercase token filter supports Greek and Turkish lowercase token filters through the language parameter.</para>
	/// </summary>
	public interface ILowercaseTokenFilter : ITokenFilter
	{
		/// <summary>
		/// Lowercase token filter supports Greek, Irish, and Turkish lowercase token filters through the language parameter
		/// </summary>
		[DataMember(Name ="language")]
		string Language { get; set; }
	}

	/// <inheritdoc />
	public class LowercaseTokenFilter : TokenFilterBase, ILowercaseTokenFilter
	{
		public LowercaseTokenFilter() : base("lowercase") { }

		/// <inheritdoc />
		public string Language { get; set; }
	}

	/// <inheritdoc />
	public class LowercaseTokenFilterDescriptor
		: TokenFilterDescriptorBase<LowercaseTokenFilterDescriptor, ILowercaseTokenFilter>, ILowercaseTokenFilter
	{
		protected override string Type => "lowercase";

		string ILowercaseTokenFilter.Language { get; set; }

		/// <inheritdoc />
		public LowercaseTokenFilterDescriptor Language(string language) => Assign(language, (a, v) => a.Language = v);
	}
}