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

using FakeItEasy;
using Microsoft.Extensions.Caching.Memory;
using Microsoft.Extensions.DependencyInjection;
using Squidex.Domain.Apps.Core.Assets;
using Squidex.Domain.Apps.Core.Scripting;
using Squidex.Domain.Apps.Entities.Assets.Commands;
using Squidex.Domain.Apps.Entities.TestHelpers;
using Squidex.Infrastructure;
using Squidex.Infrastructure.Json.Objects;
using Squidex.Infrastructure.Validation;
using Xunit;

namespace Squidex.Domain.Apps.Entities.Assets.DomainObject.Guards
{
    public sealed class ScriptingExtensionsTests
    {
        private readonly NamedId<DomainId> appId = NamedId.Of(DomainId.NewGuid(), "my-app");
        private readonly RefToken actor = RefToken.User("123");

        [Fact]
        public async Task Should_add_tag_in_script()
        {
            var script = "ctx.command.tags.add('tag');";

            var command = new AnnotateAsset { Tags = new HashSet<string>() };

            var operation = Operation(script, CreateAsset(), command);

            await operation.ExecuteAnnotateScriptAsync(command);

            Assert.Contains("tag", command.Tags);
        }

        [Fact]
        public async Task Should_add_metadata_in_script()
        {
            var script = "ctx.command.metadata['foo'] = 42;";

            var command = new AnnotateAsset { Metadata = new AssetMetadata() };

            var operation = Operation(script, CreateAsset(), command);

            await operation.ExecuteAnnotateScriptAsync(command);

            Assert.Equal(JsonValue.Create(42), command.Metadata["foo"]);
        }

        [Fact]
        public async Task Should_not_allow_to_write_asset_tags()
        {
            var script = "ctx.asset.tags.add('tag');";

            var command = new AnnotateAsset();

            var operation = Operation(script, CreateAsset(), command);

            await Assert.ThrowsAsync<ValidationException>(() => operation.ExecuteAnnotateScriptAsync(command));
        }

        [Fact]
        public async Task Should_not_allow_to_write_asset_metadata()
        {
            var script = "ctx.asset.metadata['foo'] = 42;";

            var command = new AnnotateAsset();

            var operation = Operation(script, CreateAsset(), command);

            await Assert.ThrowsAsync<ValidationException>(() => operation.ExecuteAnnotateScriptAsync(command));
        }

        private AssetOperation Operation(string script, AssetEntity asset, AnnotateAsset command)
        {
            var scripts = new AssetScripts
            {
                Annotate = script
            };

            var app = Mocks.App(appId);

            A.CallTo(() => app.AssetScripts)
                .Returns(scripts);

            var serviceProvider =
                new ServiceCollection()
                    .AddMemoryCache()
                    .AddOptions()
                    .AddOptions<MemoryCacheOptions>().Services
                    .AddSingleton<IScriptEngine, JintScriptEngine>()
                    .BuildServiceProvider();

            command.Actor = actor;
            command.User = Mocks.FrontendUser();

            return new AssetOperation(serviceProvider, () => asset)
            {
                App = app,
                CommandId = asset.Id,
                Command = command
            };
        }

        private AssetEntity CreateAsset()
        {
            return new AssetEntity
            {
                Id = DomainId.NewGuid(),
                AppId = appId,
                Created = default,
                CreatedBy = actor,
                Metadata = new AssetMetadata(),
                Tags = new HashSet<string>()
            };
        }
    }
}