using System;
using Umbraco.Cms.Core.Models.PublishedContent;
using Umbraco.Cms.Core.PublishedCache;
using Umbraco.Cms.Infrastructure.PublishedCache.DataSource;

namespace Umbraco.Cms.Infrastructure.PublishedCache
{
    public struct ContentNodeKit
    {
        [Obsolete("This will be changed to a property in future versions")]
        public ContentNode Node;

        [Obsolete("This will be changed to a property in future versions")]
        public int ContentTypeId;

        [Obsolete("This will be changed to a property in future versions")]
        public ContentData DraftData;

        [Obsolete("This will be changed to a property in future versions")]
        public ContentData PublishedData;

        public ContentNodeKit(ContentNode node, int contentTypeId, ContentData draftData, ContentData publishedData)
        {
            Node = node;
            ContentTypeId = contentTypeId;
            DraftData = draftData;
            PublishedData = publishedData;
        }


        public bool IsEmpty => Node == null;

        public bool IsNull => ContentTypeId < 0;

        public static ContentNodeKit Empty { get; } = new ContentNodeKit();
        public static ContentNodeKit Null { get; } = new ContentNodeKit(null, -1, null, null);

        public void Build(
            IPublishedContentType contentType,
            IPublishedSnapshotAccessor publishedSnapshotAccessor,
            IVariationContextAccessor variationContextAccessor,
            IPublishedModelFactory publishedModelFactory,
            bool canBePublished)
        {
            var draftData = DraftData;

            // no published data if it cannot be published (eg is masked)
            var publishedData = canBePublished ? PublishedData : null;

            // we *must* have either published or draft data
            // if it cannot be published, published data is going to be null
            // therefore, ensure that draft data is not
            if (draftData == null && !canBePublished)
                draftData = PublishedData;

            Node.SetContentTypeAndData(contentType, draftData, publishedData, publishedSnapshotAccessor, variationContextAccessor, publishedModelFactory);
        }

        public ContentNodeKit Clone(IPublishedModelFactory publishedModelFactory)
            => new ContentNodeKit(new ContentNode(Node, publishedModelFactory), ContentTypeId, DraftData, PublishedData);

        public ContentNodeKit Clone(IPublishedModelFactory publishedModelFactory, ContentData draftData, ContentData publishedData)
            => new ContentNodeKit(new ContentNode(Node, publishedModelFactory), ContentTypeId, draftData, publishedData);
    }
}