/* 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.Collections.Generic;
using System.Runtime.Serialization;

namespace OpenSearch.Client
{
	/// <summary>
	/// An analyzer of type stop that is built using a Lower Case Tokenizer, with Stop Token Filter.
	/// </summary>
	public interface IStopAnalyzer : IAnalyzer
	{
		/// <summary>
		/// A list of stopword to initialize the stop filter with. Defaults to the english stop words.
		/// </summary>
		[DataMember(Name ="stopwords")]
		StopWords StopWords { get; set; }

		/// <summary>
		/// A path (either relative to config location, or absolute) to a stopwords file configuration.
		/// </summary>
		[DataMember(Name ="stopwords_path")]
		string StopwordsPath { get; set; }
	}

	/// <inheritdoc />
	public class StopAnalyzer : AnalyzerBase, IStopAnalyzer
	{
		public StopAnalyzer() : base("stop") { }

		/// <inheritdoc />
		public StopWords StopWords { get; set; }

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

	/// <inheritdoc />
	public class StopAnalyzerDescriptor : AnalyzerDescriptorBase<StopAnalyzerDescriptor, IStopAnalyzer>, IStopAnalyzer
	{
		protected override string Type => "stop";

		StopWords IStopAnalyzer.StopWords { get; set; }
		string IStopAnalyzer.StopwordsPath { get; set; }

		public StopAnalyzerDescriptor StopWords(params string[] stopWords) => Assign(stopWords, (a, v) => a.StopWords = v);

		public StopAnalyzerDescriptor StopWords(IEnumerable<string> stopWords) =>
			Assign(stopWords.ToListOrNullIfEmpty(), (a, v) => a.StopWords = v);

		public StopAnalyzerDescriptor StopWords(StopWords stopWords) => Assign(stopWords, (a, v) => a.StopWords = v);

		public StopAnalyzerDescriptor StopwordsPath(string path) => Assign(path, (a, v) => a.StopwordsPath = v);
	}
}