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

using Jint.Native;
using Squidex.Domain.Apps.Core.Properties;
using Squidex.Domain.Apps.Core.Rules.EnrichedEvents;
using Squidex.Domain.Apps.Core.Scripting;
using Squidex.Text;

namespace Squidex.Domain.Apps.Core.HandleRules.Extensions
{
    public sealed class EventJintExtension : IJintExtension, IScriptDescriptor
    {
        private delegate JsValue EventDelegate();
        private readonly IUrlGenerator urlGenerator;

        public EventJintExtension(IUrlGenerator urlGenerator)
        {
            this.urlGenerator = urlGenerator;
        }

        public void Extend(ScriptExecutionContext context)
        {
            context.Engine.SetValue("contentAction", new EventDelegate(() =>
            {
                if (context.TryGetValue("event", out var temp) && temp is EnrichedContentEvent contentEvent)
                {
                    return contentEvent.Status.ToString();
                }

                return JsValue.Null;
            }));

            context.Engine.SetValue("contentUrl", new EventDelegate(() =>
            {
                if (context.TryGetValue("event", out var temp) && temp is EnrichedContentEvent contentEvent)
                {
                    return urlGenerator.ContentUI(contentEvent.AppId, contentEvent.SchemaId, contentEvent.Id);
                }

                return JsValue.Null;
            }));

            context.Engine.SetValue("assetContentUrl", new EventDelegate(() =>
            {
                if (context.TryGetValue("event", out var temp) && temp is EnrichedAssetEvent assetEvent)
                {
                    return urlGenerator.AssetContent(assetEvent.AppId, assetEvent.Id.ToString());
                }

                return JsValue.Null;
            }));

            context.Engine.SetValue("assetContentAppUrl", new EventDelegate(() =>
            {
                if (context.TryGetValue("event", out var temp) && temp is EnrichedAssetEvent assetEvent)
                {
                    return urlGenerator.AssetContent(assetEvent.AppId, assetEvent.Id.ToString());
                }

                return JsValue.Null;
            }));

            context.Engine.SetValue("assetContentSlugUrl", new EventDelegate(() =>
            {
                if (context.TryGetValue("event", out var temp) && temp is EnrichedAssetEvent assetEvent)
                {
                    return urlGenerator.AssetContent(assetEvent.AppId, assetEvent.FileName.Slugify());
                }

                return JsValue.Null;
            }));
        }

        public void Describe(AddDescription describe, ScriptScope scope)
        {
            if (scope.HasFlag(ScriptScope.ContentTrigger))
            {
                describe(JsonType.Function, "contentAction",
                    Resources.ScriptingContentAction);

                describe(JsonType.Function, "contentUrl",
                    Resources.ScriptingContentUrl);
            }

            if (scope.HasFlag(ScriptScope.AssetTrigger))
            {
                describe(JsonType.Function, "assetContentUrl",
                    Resources.ScriptingAssetContentUrl);

                describe(JsonType.Function, "assetContentAppUrl",
                    Resources.ScriptingAssetContentAppUrl);

                describe(JsonType.Function, "assetContentSlugUrl",
                    Resources.ScriptingAssetContentSlugUrl);
            }
        }
    }
}