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

namespace OpenSearch.Client
{
	public interface IPipelineAggregation : IAggregation
	{
		[DataMember(Name ="buckets_path")]
		IBucketsPath BucketsPath { get; set; }

		[DataMember(Name ="format")]
		string Format { get; set; }

		[DataMember(Name ="gap_policy")]
		GapPolicy? GapPolicy { get; set; }
	}

	public abstract class PipelineAggregationBase : AggregationBase, IPipelineAggregation
	{
		internal PipelineAggregationBase() { }

		public PipelineAggregationBase(string name, IBucketsPath bucketsPath) : base(name) => BucketsPath = bucketsPath;

		public IBucketsPath BucketsPath { get; set; }
		public string Format { get; set; }
		public GapPolicy? GapPolicy { get; set; }
	}

	public abstract class PipelineAggregationDescriptorBase<TPipelineAggregation, TPipelineAggregationInterface, TBucketsPath>
		: DescriptorBase<TPipelineAggregation, TPipelineAggregationInterface>, IPipelineAggregation
		where TPipelineAggregation : PipelineAggregationDescriptorBase<TPipelineAggregation, TPipelineAggregationInterface, TBucketsPath>
		, TPipelineAggregationInterface, IPipelineAggregation
		where TPipelineAggregationInterface : class, IPipelineAggregation
		where TBucketsPath : IBucketsPath
	{
		IBucketsPath IPipelineAggregation.BucketsPath { get; set; }
		string IPipelineAggregation.Format { get; set; }
		GapPolicy? IPipelineAggregation.GapPolicy { get; set; }

		IDictionary<string, object> IAggregation.Meta { get; set; }

		string IAggregation.Name { get; set; }

		public TPipelineAggregation Format(string format) => Assign(format, (a, v) => a.Format = v);

		public TPipelineAggregation GapPolicy(GapPolicy? gapPolicy) => Assign(gapPolicy, (a, v) => a.GapPolicy = v);

		public TPipelineAggregation BucketsPath(TBucketsPath bucketsPath) => Assign(bucketsPath, (a, v) => a.BucketsPath = v);

		public TPipelineAggregation Meta(Func<FluentDictionary<string, object>, FluentDictionary<string, object>> selector) =>
			Assign(selector, (a, v) => a.Meta = v?.Invoke(new FluentDictionary<string, object>()));
	}
}