// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.

using System.Linq;
using Markdig.Extensions.Yaml;
using Markdig.Syntax;
using Markdig.Syntax.Inlines;
using osu.Framework.Allocation;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Containers.Markdown;
using osu.Game.Graphics.Containers.Markdown;
using osu.Game.Online.API;

namespace osu.Game.Overlays.Wiki.Markdown
{
    public class WikiMarkdownContainer : OsuMarkdownContainer
    {
        [Resolved]
        private IAPIProvider api { get; set; }

        public string CurrentPath
        {
            set => DocumentUrl = value;
        }

        protected override void AddMarkdownComponent(IMarkdownObject markdownObject, FillFlowContainer container, int level)
        {
            switch (markdownObject)
            {
                case YamlFrontMatterBlock yamlFrontMatterBlock:
                    container.Add(new WikiNoticeContainer(yamlFrontMatterBlock));
                    break;

                case ParagraphBlock paragraphBlock:
                    // Check if paragraph only contains an image
                    if (paragraphBlock.Inline.Count() == 1 && paragraphBlock.Inline.FirstChild is LinkInline { IsImage: true } linkInline)
                    {
                        container.Add(new WikiMarkdownImageBlock(linkInline));
                        return;
                    }

                    break;
            }

            base.AddMarkdownComponent(markdownObject, container, level);
        }

        public override MarkdownTextFlowContainer CreateTextFlow() => new WikiMarkdownTextFlowContainer();

        private class WikiMarkdownTextFlowContainer : OsuMarkdownTextFlowContainer
        {
            protected override void AddImage(LinkInline linkInline) => AddDrawable(new WikiMarkdownImage(linkInline));
        }
    }
}