/* 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.Linq;
using OpenSearch.OpenSearch.Xunit.XunitPlumbing;
using OpenSearch.Net;
using FluentAssertions;
using OpenSearch.Client;
using Tests.Core.ManagedOpenSearch.Clusters;
using Tests.Framework.EndpointTests;
using Tests.Framework.EndpointTests.TestState;
using static OpenSearch.Client.Infer;

namespace Tests.Document.Multiple.UpdateByQuery
{
	public class UpdateByQueryApiTests
		: ApiIntegrationTestBase<IntrusiveOperationCluster, UpdateByQueryResponse, IUpdateByQueryRequest,
			UpdateByQueryDescriptor<UpdateByQueryApiTests.Test>, UpdateByQueryRequest>
	{
		public UpdateByQueryApiTests(IntrusiveOperationCluster cluster, EndpointUsage usage) : base(cluster, usage) { }

		protected override bool ExpectIsValid => true;

		protected override object ExpectJson { get; } = new { query = new { match_all = new { } } };
		protected override int ExpectStatusCode => 200;

		protected override Func<UpdateByQueryDescriptor<Test>, IUpdateByQueryRequest> Fluent => d => d
			.Index(CallIsolatedValue)
			.Query(q => q.MatchAll())
			.Refresh()
			.Conflicts(Conflicts.Proceed);

		protected override HttpMethod HttpMethod => HttpMethod.POST;

		protected override UpdateByQueryRequest Initializer => new UpdateByQueryRequest(CallIsolatedValue)
		{
			Query = new MatchAllQuery(),
			Refresh = true,
			Conflicts = Conflicts.Proceed
		};

		protected override bool SupportsDeserialization => false;

		protected override string UrlPath => $"/{CallIsolatedValue}/_update_by_query?refresh=true&conflicts=proceed";

		protected override void IntegrationSetup(IOpenSearchClient client, CallUniqueValues values)
		{
			foreach (var index in values.Values)
			{
				Client.Indices.Create(index, c => c
					.Map<Test>(map => map
						.Dynamic(false)
						.Properties(props => props
							.Text(s => s.Name(p => p.Text))
						)
					)
				);
				Client.Index(new Test { Text = "words words", Flag = "bar" }, i => i.Index(index).Refresh(Refresh.True));
				Client.Index(new Test { Text = "words words", Flag = "foo" }, i => i.Index(index).Refresh(Refresh.True));
				Client.Map<Test>(m => m
					.Index(index)
					.Properties(props => props
						.Text(s => s.Name(p => p.Text))
						.Keyword(s => s.Name(p => p.Flag))
					)
				);

				var searchResults = SearchFlags(index);
				searchResults.Total.Should().Be(0);
			}
		}

		protected override LazyResponses ClientUsage() => Calls(
			(client, f) => client.UpdateByQuery(f),
			(client, f) => client.UpdateByQueryAsync(f),
			(client, r) => client.UpdateByQuery(r),
			(client, r) => client.UpdateByQueryAsync(r)
		);

		protected override void OnAfterCall(IOpenSearchClient client) => client.Indices.Refresh(CallIsolatedValue);

		protected override UpdateByQueryDescriptor<Test> NewDescriptor() => new UpdateByQueryDescriptor<Test>(CallIsolatedValue);

		private ISearchResponse<Test> SearchFlags(string index) =>
			Client.Search<Test>(s => s
				.Index(index)
				.Query(q => q.Match(m => m.Field(p => p.Flag).Query("foo")))
			);

		protected override void ExpectResponse(UpdateByQueryResponse response)
		{
			response.Task.Should().BeNull();
			response.Took.Should().BeGreaterThan(0);
			response.Total.Should().Be(2);
			response.Updated.Should().Be(2);
			response.Batches.Should().Be(1);

			var searchResponse = SearchFlags(CallIsolatedValue);
			searchResponse.Total.Should().Be(1);
		}

		public class Test
		{
			public string Flag { get; set; }
			public string Text { get; set; }
		}
	}

	public class UpdateByQueryWaitForCompletionApiTests : UpdateByQueryApiTests
	{
		public UpdateByQueryWaitForCompletionApiTests(IntrusiveOperationCluster cluster, EndpointUsage usage) : base(cluster, usage) { }

		protected override Func<UpdateByQueryDescriptor<Test>, IUpdateByQueryRequest> Fluent => d => d
			.Query(q => q.MatchAll())
			.Index(CallIsolatedValue)
			.WaitForCompletion(false)
			.Conflicts(Conflicts.Proceed);

		protected override UpdateByQueryRequest Initializer => new UpdateByQueryRequest(CallIsolatedValue)
		{
			Query = new MatchAllQuery(),
			WaitForCompletion = false,
			Conflicts = Conflicts.Proceed
		};

		protected override string UrlPath => $"/{CallIsolatedValue}/_update_by_query?wait_for_completion=false&conflicts=proceed";

		protected override void ExpectResponse(UpdateByQueryResponse response)
		{
			response.Task.Should().NotBeNull();
			response.Task.TaskNumber.Should().BeGreaterThan(0);
			response.Task.NodeId.Should().NotBeNullOrWhiteSpace();
			response.Task.FullyQualifiedId.Should().NotBeNullOrWhiteSpace();
		}
	}

	public class UpdateByQueryWithFailuresApiTests : UpdateByQueryApiTests
	{
		private static readonly string _script = "ctx._source.text = 'x'";

		public UpdateByQueryWithFailuresApiTests(IntrusiveOperationCluster cluster, EndpointUsage usage) : base(cluster, usage) { }

		protected override bool ExpectIsValid => false;

		protected override object ExpectJson { get; } =
			new
			{
				query = new { match = new { flag = new { query = "bar" } } },
				script = new { source = "ctx._source.text = 'x'" }
			};

		protected override int ExpectStatusCode => 409;

		protected override Func<UpdateByQueryDescriptor<Test>, IUpdateByQueryRequest> Fluent => d => d
			.Index(CallIsolatedValue)
			.Query(q => q.Match(m => m.Field(p => p.Flag).Query("bar")))
			.Script(ss => ss.Source(_script));

		protected override UpdateByQueryRequest Initializer => new UpdateByQueryRequest(CallIsolatedValue)
		{
			Query = new MatchQuery
			{
				Field = Field<Test>(p => p.Flag),
				Query = "bar"
			},
			Script = new InlineScript(_script),
		};

		protected override string UrlPath => $"/{CallIsolatedValue}/_update_by_query";

		protected override void IntegrationSetup(IOpenSearchClient client, CallUniqueValues values)
		{
			foreach (var index in values.Values)
			{
				Client.Indices.Create(index, c => c
					.Settings(s => s
						.RefreshInterval(-1)
					)
				);
				Client.Index(new Test { Text = "test1", Flag = "bar" }, i => i.Index(index).Id(1).Refresh(Refresh.True));
				Client.Index(new Test { Text = "test2", Flag = "bar" }, i => i.Index(index).Id(1));
			}
		}

		protected override void ExpectResponse(UpdateByQueryResponse response)
		{
			response.VersionConflicts.Should().Be(1);
			response.Failures.Should().NotBeEmpty();
			var failure = response.Failures.First();

			failure.Index.Should().NotBeNullOrWhiteSpace();
			failure.Status.Should().Be(409);
			failure.Id.Should().NotBeNullOrWhiteSpace();

			failure.Cause.Should().NotBeNull();
			failure.Cause.IndexUUID.Should().NotBeNullOrWhiteSpace();
			failure.Cause.Reason.Should().NotBeNullOrWhiteSpace();
			failure.Cause.Index.Should().NotBeNullOrWhiteSpace();
			failure.Cause.Shard.Should().NotBeNull();
			failure.Cause.Type.Should().NotBeNullOrWhiteSpace();
		}
	}
}