/* 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 FluentAssertions;
using OpenSearch.Client;
using Tests.Core.Extensions;
using Tests.Core.ManagedOpenSearch.Clusters;
using Tests.Domain;
using Tests.Framework.EndpointTests.TestState;
using static OpenSearch.Client.Infer;

namespace Tests.Aggregations.Metric.Percentiles
{
	public class PercentilesAggregationUsageTests : AggregationUsageTestBase<ReadOnlyCluster>
	{
		public PercentilesAggregationUsageTests(ReadOnlyCluster i, EndpointUsage usage) : base(i, usage) { }

		protected override object AggregationJson => new
		{
			commits_outlier = new
			{
				percentiles = new
				{
					field = "numberOfCommits",
					percents = new[] { 95.0, 99.0, 99.9 },
					hdr = new
					{
						number_of_significant_value_digits = 3
					},
					script = new
					{
						source = "doc['numberOfCommits'].value * 1.2",
					},
					missing = 0.0
				}
			}
		};

		protected override Func<AggregationContainerDescriptor<Project>, IAggregationContainer> FluentAggs => a => a
			.Percentiles("commits_outlier", pr => pr
				.Field(p => p.NumberOfCommits)
				.Percents(95, 99, 99.9)
				.Method(m => m
					.HDRHistogram(hdr => hdr
						.NumberOfSignificantValueDigits(3)
					)
				)
				.Script(ss => ss.Source("doc['numberOfCommits'].value * 1.2"))
				.Missing(0)
			);

		protected override AggregationDictionary InitializerAggs =>
			new PercentilesAggregation("commits_outlier", Field<Project>(p => p.NumberOfCommits))
			{
				Percents = new[] { 95, 99, 99.9 },
				Method = new HDRHistogramMethod
				{
					NumberOfSignificantValueDigits = 3
				},
				Script = new InlineScript("doc['numberOfCommits'].value * 1.2"),
				Missing = 0
			};

		protected override void ExpectResponse(ISearchResponse<Project> response)
		{
			response.ShouldBeValid();
			var commitsOutlier = response.Aggregations.Percentiles("commits_outlier");
			commitsOutlier.Should().NotBeNull();
			commitsOutlier.Items.Should().NotBeNullOrEmpty();
			foreach (var item in commitsOutlier.Items)
				item.Value.Should().BeGreaterThan(0);
		}
	}

	// hide
	public class PercentilesAggregationNonKeyedValuesUsageTests : AggregationUsageTestBase<ReadOnlyCluster>
	{
		public PercentilesAggregationNonKeyedValuesUsageTests(ReadOnlyCluster i, EndpointUsage usage) : base(i, usage) { }

		protected override object AggregationJson => new
		{
			commits_outlier = new
			{
				percentiles = new
				{
					field = "numberOfCommits",
					percents = new[] { 95.0, 99.0, 99.9 },
					hdr = new
					{
						number_of_significant_value_digits = 3
					},
					script = new
					{
						source = "doc['numberOfCommits'].value * 1.2",
					},
					missing = 0.0,
					keyed = false
				}
			}
		};

		protected override Func<AggregationContainerDescriptor<Project>, IAggregationContainer> FluentAggs => a => a
			.Percentiles("commits_outlier", pr => pr
				.Field(p => p.NumberOfCommits)
				.Percents(95, 99, 99.9)
				.Method(m => m
					.HDRHistogram(hdr => hdr
						.NumberOfSignificantValueDigits(3)
					)
				)
				.Script(ss => ss.Source("doc['numberOfCommits'].value * 1.2"))
				.Missing(0)
				.Keyed(false)
			);

		protected override AggregationDictionary InitializerAggs =>
			new PercentilesAggregation("commits_outlier", Field<Project>(p => p.NumberOfCommits))
			{
				Percents = new[] { 95, 99, 99.9 },
				Method = new HDRHistogramMethod
				{
					NumberOfSignificantValueDigits = 3
				},
				Script = new InlineScript("doc['numberOfCommits'].value * 1.2"),
				Missing = 0,
				Keyed = false
			};

		protected override void ExpectResponse(ISearchResponse<Project> response)
		{
			response.ShouldBeValid();
			var commitsOutlier = response.Aggregations.Percentiles("commits_outlier");
			commitsOutlier.Should().NotBeNull();
			commitsOutlier.Items.Should().NotBeNullOrEmpty();
			foreach (var item in commitsOutlier.Items)
				item.Value.Should().BeGreaterThan(0);
		}
	}
}