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

namespace Tests.Search.MultiSearch
{
	public class MultiSearchInvalidApiTests
		: ApiIntegrationTestBase<ReadOnlyCluster, MultiSearchResponse, IMultiSearchRequest, MultiSearchDescriptor, MultiSearchRequest>
	{
		public MultiSearchInvalidApiTests(ReadOnlyCluster cluster, EndpointUsage usage) : base(cluster, usage) { }

		protected override bool ExpectIsValid => false; //2 out of the three searches are not valid

		protected override object ExpectJson => new object[]
		{
			new { },
			new { query = new { match_all = new { } }, from = 0, size = 10 },
			new { index = "otherindex" },
			new { query = new { match = new { name = new { query = "osc" } } } },
			new { index = "otherindex", search_type = "dfs_query_then_fetch" },
			new { query = new { match_all = new { } } }
		};

		protected override int ExpectStatusCode => 200;

		protected override Func<MultiSearchDescriptor, IMultiSearchRequest> Fluent => ms => ms
			.Index(typeof(Project))
			.Search<Project>(s => s.Query(q => q.MatchAll()).From(0).Size(10))
			.Search<Project>(s => s.Index("otherindex").Query(q => q.Match(m => m.Field(p => p.Name).Query("osc"))))
			.Search<Project>(s => s.Index("otherindex").SearchType(SearchType.DfsQueryThenFetch).Query(q => q.MatchAll()));

		protected override HttpMethod HttpMethod => HttpMethod.POST;

		protected override MultiSearchRequest Initializer => new MultiSearchRequest(typeof(Project))
		{
			Operations = new Dictionary<string, ISearchRequest>
			{
				{ "s1", new SearchRequest<Project> { From = 0, Size = 10, Query = new QueryContainer(new MatchAllQuery()) } },
				{
					"s2",
					new SearchRequest<Project>("otherindex")
						{ Query = new QueryContainer(new MatchQuery { Field = "name", Query = "osc" }) }
				},
				{
					"s3",
					new SearchRequest<Project>("otherindex")
						{ SearchType = SearchType.DfsQueryThenFetch, Query = new QueryContainer(new MatchAllQuery()) }
				},
			}
		};

		protected override bool SupportsDeserialization => false;
		protected override string UrlPath => "/project/_msearch";

		protected override LazyResponses ClientUsage() => Calls(
			(c, f) => c.MultiSearch(Index<Project>(), f),
			(c, f) => c.MultiSearchAsync(Index<Project>(), f),
			(c, r) => c.MultiSearch(r),
			(c, r) => c.MultiSearchAsync(r)
		);

		[I] public Task AssertResponse() => AssertOnAllResponses(r =>
		{
			r.TotalResponses.Should().Be(3);

			/** GetResponses also returns invalid requests **/
			var responses = r.GetResponses<Project>().ToList();
			responses.First().ShouldBeValid();
			AssertInvalidResponse(responses[1]);
			AssertInvalidResponse(responses[2]);

			/** GetInvalidResponses returns all the invalid responses as IResponse **/
			var nvalidResponses = r.GetInvalidResponses();
			nvalidResponses.Should().NotBeNull().And.HaveCount(2);
			foreach (var response in nvalidResponses)
				AssertInvalidResponse(response);
		});

		private void AssertInvalidResponse(IResponse searchResponse)
		{
			searchResponse.ShouldNotBeValid();

			searchResponse.ServerError.Should().NotBeNull();
			searchResponse.ServerError.Status.Should().Be(404);
			searchResponse.ServerError.Error.Should().NotBeNull();
			searchResponse.ServerError.Error.Type.Should().Be("index_not_found_exception");
			searchResponse.ServerError.Error.Reason.Should().StartWith("no such index");
		}
	}
}