/* SPDX-License-Identifier: Apache-2.0
*
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* 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
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*  the Apache License, Version 2.0 (the "License"); you may
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*  You may obtain a copy of the License at
*
* 	http://www.apache.org/licenses/LICENSE-2.0
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using System;
using System.Reactive.Linq;
using System.Threading;
using System.Threading.Tasks;
using OpenSearch.OpenSearch.Xunit.XunitPlumbing;
using FluentAssertions;
using Tests.Core.ManagedOpenSearch.Clusters;

namespace Tests.Document.Multiple.BulkAll
{
	public class BulkAllForEachAsyncApiTests : BulkAllApiTestsBase
	{
		public BulkAllForEachAsyncApiTests(IntrusiveOperationCluster cluster) : base(cluster) { }

		[I] public async Task AwaitBulkAll()
		{
			var index = CreateIndexName();

			var size = 1000;
			var pages = 10;
			var seenPages = 0;
			var numberOfDocuments = size * pages;
			var documents = CreateLazyStreamOfDocuments(numberOfDocuments);

			var tokenSource = new CancellationTokenSource();
			var observableBulk = Client.BulkAll(documents, f => f
					.MaxDegreeOfParallelism(8)
					.BackOffTime(TimeSpan.FromSeconds(10))
					.BackOffRetries(2)
					.Size(size)
					.RefreshOnCompleted()
					.Index(index)
					.BufferToBulk((r, buffer) => r.IndexMany(buffer))
				, tokenSource.Token);


			await observableBulk
				.ForEachAsync(x => Interlocked.Increment(ref seenPages), tokenSource.Token);

			seenPages.Should().Be(pages);
			var count = Client.Count<SmallObject>(f => f.Index(index));
			count.Count.Should().Be(numberOfDocuments);
		}
	}
}