/* 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.
*
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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
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* 	http://www.apache.org/licenses/LICENSE-2.0
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using System;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using OpenSearch.OpenSearch.Xunit.XunitPlumbing;
using OpenSearch.Net;
using FluentAssertions;
using OpenSearch.Client;
using OpenSearch.Client.Specification.SnapshotApi;
using Tests.Core.Extensions;
using Tests.Core.ManagedOpenSearch.Clusters;
using Tests.Framework.EndpointTests;
using Tests.Framework.EndpointTests.TestState;

namespace Tests.Modules.SnapshotAndRestore.Snapshot
{
	public class CoordinatedSnapshotTests : CoordinatedIntegrationTestBase<IntrusiveOperationCluster>
	{
		private const string SetupStep = nameof(SetupStep);
		private const string CreateSnapshotStep = nameof(CreateSnapshotStep);
		private const string GetSnapshotStep = nameof(GetSnapshotStep);
		private const string CloneStep = nameof(CloneStep);
		private const string DeleteSnapshotStep = nameof(DeleteSnapshotStep);
		private const string DeleteNonExistentSnapshotStep = nameof(DeleteNonExistentSnapshotStep);

		public CoordinatedSnapshotTests(IntrusiveOperationCluster cluster, EndpointUsage usage) : base(new CoordinatedUsage(cluster, usage)
		{
			{
				SetupStep, u => u
					.Call(async (v, c) =>
					{
						await c.Snapshot.CreateRepositoryAsync($"{v}-repository", cr => cr.FileSystem(fs => fs.Settings(Path.Combine(cluster.FileSystem.RepositoryPath, v))));
						await c.Indices.CreateAsync($"{v}-index");
						await c.Cluster.HealthAsync($"{v}-index", ch => ch.WaitForStatus(WaitForStatus.Yellow));
					})
			},
			{
				CreateSnapshotStep, u => u
					.Calls<SnapshotDescriptor, SnapshotRequest, ISnapshotRequest, SnapshotResponse>(
						v => new SnapshotRequest($"{v}-repository", $"{v}-source") { Indices = $"{v}-index", WaitForCompletion = true, IncludeGlobalState = false },
						(v, d) => d.Index($"{v}-index").WaitForCompletion(true).IncludeGlobalState(false),
						(v, c, f) => c.Snapshot.Snapshot($"{v}-repository", $"{v}-source", f),
						(v, c, f) => c.Snapshot.SnapshotAsync($"{v}-repository", $"{v}-source", f),
						(_, c, r) => c.Snapshot.Snapshot(r),
						(_, c, r) => c.Snapshot.SnapshotAsync(r))
			},
			{
				GetSnapshotStep, u => u
					.Calls<GetSnapshotDescriptor, GetSnapshotRequest, IGetSnapshotRequest, GetSnapshotResponse>(
						v => new GetSnapshotRequest($"{v}-repository", $"{v}-source"),
						(v, d) => d,
						(v, c, f) => c.Snapshot.Get($"{v}-repository", $"{v}-source", f),
						(v, c, f) => c.Snapshot.GetAsync($"{v}-repository", $"{v}-source", f),
						(_, c, r) => c.Snapshot.Get(r),
						(_, c, r) => c.Snapshot.GetAsync(r))
			},
			{
				CloneStep, u => u
					.Calls<CloneSnapshotDescriptor, CloneSnapshotRequest, ICloneSnapshotRequest, CloneSnapshotResponse>(
						v => new CloneSnapshotRequest($"{v}-repository", $"{v}-source", $"{v}-target"){ Indices = $"{v}-index" },
						(v, d) => d.Index($"{v}-index"),
						(v, c, f) => c.Snapshot.Clone($"{v}-repository", $"{v}-source", $"{v}-target", f),
						(v, c, f) => c.Snapshot.CloneAsync($"{v}-repository", $"{v}-source", $"{v}-target", f),
						(_, c, r) => c.Snapshot.Clone(r),
						(_, c, r) => c.Snapshot.CloneAsync(r))
			},
			{
				DeleteSnapshotStep, u => u
					.Calls<DeleteSnapshotDescriptor, DeleteSnapshotRequest, IDeleteSnapshotRequest, DeleteSnapshotResponse>(
						v => new DeleteSnapshotRequest($"{v}-repository", $"{v}-source"),
						(v, d) => d,
						(v, c, f) => c.Snapshot.Delete($"{v}-repository", $"{v}-source", f),
						(v, c, f) => c.Snapshot.DeleteAsync($"{v}-repository", $"{v}-source", f),
						(_, c, r) => c.Snapshot.Delete(r),
						(_, c, r) => c.Snapshot.DeleteAsync(r))
			},
			{
				DeleteNonExistentSnapshotStep, u => u
					.Calls<DeleteSnapshotDescriptor, DeleteSnapshotRequest, IDeleteSnapshotRequest, DeleteSnapshotResponse>(
						v => new DeleteSnapshotRequest($"{v}-repository", v),
						(v, d) => d,
						(v, c, f) => c.Snapshot.Delete($"{v}-repository", v, f),
						(v, c, f) => c.Snapshot.DeleteAsync($"{v}-repository", v, f),
						(_, c, r) => c.Snapshot.Delete(r),
						(_, c, r) => c.Snapshot.DeleteAsync(r))
			}
		})
		{ }

		[I]
		public async Task CreateSnapshotResponse() => await Assert<SnapshotResponse>(CreateSnapshotStep, r =>
		{
			r.Accepted.Should().BeTrue();
			r.Snapshot.Indices.Count.Should().Be(1);
			r.Snapshot.StartTime.Should().BeOnOrBefore(DateTime.Now);
		});

		[I]
		public async Task GetSnapshotResponse() => await Assert<GetSnapshotResponse>(GetSnapshotStep, r =>
		{
			r.Snapshots.Should().HaveCount(1);
			var snapshot = r.Snapshots.FirstOrDefault();
			snapshot.Should().NotBeNull();
		});

		[I]
		public async Task CloneSnapshotResponse() => await Assert<CloneSnapshotResponse>(CloneStep, r =>
		{
			r.Acknowledged.Should().BeTrue();
		});

		[I]
		public async Task DeleteSnapshotResponse() => await Assert<DeleteSnapshotResponse>(DeleteSnapshotStep, r =>
		{
			r.Acknowledged.Should().BeTrue();
		});

		[I]
		public async Task DeleteNonExistentSnapshotResponse() => await Assert<DeleteSnapshotResponse>(DeleteNonExistentSnapshotStep, r =>
		{
			r.ShouldNotBeValid();
			r.ServerError.Should().NotBeNull();
			r.ServerError.Status.Should().Be(404);
			r.ServerError.Error.Reason.Should().Contain("missing");
		});
	}
}