// ==========================================================================
//  Squidex Headless CMS
// ==========================================================================
//  Copyright (c) Squidex UG (haftungsbeschraenkt)
//  All rights reserved. Licensed under the MIT license.
// ==========================================================================

using FakeItEasy;
using Squidex.Domain.Apps.Entities.Backup;
using Squidex.Domain.Apps.Entities.Schemas.DomainObject;
using Squidex.Domain.Apps.Events;
using Squidex.Domain.Apps.Events.Schemas;
using Squidex.Infrastructure;
using Squidex.Infrastructure.Commands;
using Squidex.Infrastructure.EventSourcing;
using Xunit;

namespace Squidex.Domain.Apps.Entities.Schemas
{
    public class BackupSchemasTests
    {
        private readonly CancellationTokenSource cts = new CancellationTokenSource();
        private readonly CancellationToken ct;
        private readonly Rebuilder rebuilder = A.Fake<Rebuilder>();
        private readonly NamedId<DomainId> appId = NamedId.Of(DomainId.NewGuid(), "my-app");
        private readonly BackupSchemas sut;

        public BackupSchemasTests()
        {
            ct = cts.Token;

            sut = new BackupSchemas(rebuilder);
        }

        [Fact]
        public void Should_provide_name()
        {
            Assert.Equal("Schemas", sut.Name);
        }

        [Fact]
        public async Task Should_restore_indices_for_all_non_deleted_schemas()
        {
            var schemaId1 = NamedId.Of(DomainId.NewGuid(), "my-schema1");
            var schemaId2 = NamedId.Of(DomainId.NewGuid(), "my-schema2");
            var schemaId3 = NamedId.Of(DomainId.NewGuid(), "my-schema3");

            var context = new RestoreContext(appId.Id, new UserMapping(RefToken.User("123")), A.Fake<IBackupReader>(), DomainId.NewGuid());

            await sut.RestoreEventAsync(AppEvent(new SchemaCreated
            {
                SchemaId = schemaId1
            }), context, ct);

            await sut.RestoreEventAsync(AppEvent(new SchemaCreated
            {
                SchemaId = schemaId2
            }), context, ct);

            await sut.RestoreEventAsync(AppEvent(new SchemaCreated
            {
                SchemaId = schemaId3
            }), context, ct);

            await sut.RestoreEventAsync(AppEvent(new SchemaDeleted
            {
                SchemaId = schemaId3
            }), context, ct);

            var rebuildContents = new HashSet<DomainId>();

            A.CallTo(() => rebuilder.InsertManyAsync<SchemaDomainObject, SchemaDomainObject.State>(A<IEnumerable<DomainId>>._, A<int>._, ct))
                .Invokes(x => rebuildContents.AddRange(x.GetArgument<IEnumerable<DomainId>>(0)!));

            await sut.RestoreAsync(context, ct);

            Assert.Equal(new HashSet<DomainId>
            {
                DomainId.Combine(appId, schemaId1.Id),
                DomainId.Combine(appId, schemaId2.Id)
            }, rebuildContents);
        }

        private Envelope<SchemaEvent> AppEvent(SchemaEvent @event)
        {
            @event.AppId = appId;

            return Envelope.Create(@event).SetAggregateId(DomainId.Combine(appId.Id, @event.SchemaId.Id));
        }
    }
}