/**
 *  Copyright (c) 2025 taskylizard. Apache License 2.0.
 *
 *  Licensed 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.
 */

import type { MarkdownRenderer } from 'vitepress'

const excluded = ['Beginners Guide']
const starredMarkers = [':star:', ':glowing-star:', '⭐', '🌟']
const indexMarkers = ['🌐', ':globe_with_meridians:', ':globe-with-meridians:']

export function toggleStarredPlugin(md: MarkdownRenderer) {
  md.renderer.rules.list_item_open = (tokens, index, options, env, self) => {
    const contentToken = tokens[index + 2]

    if (!contentToken) return self.renderToken(tokens, index, options)

    const content = contentToken.content
    const isStarred =
      !excluded.includes(env.frontmatter.title) &&
      starredMarkers.some((marker) => content.includes(marker))
    const isIndex = indexMarkers.some((marker) => content.includes(marker))

    if (!isStarred && !isIndex) return self.renderToken(tokens, index, options)

    const classes = []
    if (isStarred) classes.push('starred')
    if (isIndex) classes.push('index')

    return `<li class="${classes.join(' ')}">`
  }
}