using Markdig;
using Markdig.Parsers.Inlines;
using Markdig.Renderers;

namespace MfGames.Markdown.Extensions;

/// <summary>
/// Translate `[[Bob]]` into `/bob/`.
/// </summary>
public class WikiLinkExtension : IMarkdownExtension
{
    public WikiLinkExtension()
        : this(null)
    {
    }

    public WikiLinkExtension(WikiLinkOptions? options)
    {
        this.Options = options ?? new WikiLinkOptions();
    }

    public WikiLinkOptions Options { get; set; }

    /// <inheritdoc />
    public void Setup(MarkdownPipelineBuilder pipeline)
    {
        WikiLinkInlineParser? parser = pipeline.InlineParsers
            .FindExact<WikiLinkInlineParser>();

        if (parser != null)
        {
            return;
        }

        parser = new WikiLinkInlineParser(this.Options);
        pipeline.InlineParsers.InsertBefore<LinkInlineParser>(parser);
    }

    /// <inheritdoc />
    public void Setup(
        MarkdownPipeline pipeline,
        IMarkdownRenderer renderer)
    {
        // No setup needed here because we're using LinkInline which does the
        // bulk of the work.
    }
}