/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

using System.Text.RegularExpressions;
using Microsoft.DocAsCode.MarkdownLite;

namespace LuceneDocsPlugins
{
    /// <summary>
    /// The regex rule to parse out the custom Lucene tokens
    /// </summary>
    public class LuceneNoteBlockRule : IMarkdownRule
    {
        // TODO: I think there's an issue with this regex and multi-line or something, for example see: DrillDownQuery class
        // since this isn't matching it's experimental tag (there's lots of others too)
        public virtual Regex LabelRegex { get; } = new Regex("^@lucene\\.(?<notetype>(experimental|internal))$");

        public virtual IMarkdownToken TryMatch(IMarkdownParser parser, IMarkdownParsingContext context)
        {
            var match = LabelRegex.Match(context.CurrentMarkdown);
            if (match.Length == 0)
            {
                return null;
            }
            var sourceInfo = context.Consume(match.Length);
            return new LuceneNoteBlockToken(this, parser.Context, match.Groups[1].Value, sourceInfo);
        }

        public virtual string Name => "LuceneNote";
    }
}