// Supports bold, italic, and links
export const parseSimpleMarkdown = (input: string) => {
  const parts: MarkdownPart[] = []

  const pattern = /(\*\*|__)(.+?)\1|(?<!\*)\*(.+?)\*|(?<!_)_(.+?)_|(https?:\/\/[^\s]+)/g
  let lastIndex = 0

  input.replace(pattern, (match, bold, boldText, italic1, italic2, url, offset) => {
    if (offset > lastIndex) {
      parts.push({ type: 'text', content: input.slice(lastIndex, offset) })
    }

    if (bold) {
      parts.push({ type: 'bold', content: boldText })
    } else if (italic1 || italic2) {
      parts.push({ type: 'italic', content: italic1 || italic2 })
    } else if (url) {
      const urlMatch = url.match(/^(https?:\/\/[^\s]+)([.,;!?]+)$/)
      const urlContent = urlMatch ? urlMatch[1] : url
      parts.push({ type: 'link', content: urlContent })
      const punctuation = urlMatch ? urlMatch[2] : ''
      if (punctuation) {
        parts.push({ type: 'text', content: punctuation })
      }
    }

    lastIndex = offset + match.length

    return match
  })

  if (lastIndex < input.length) {
    parts.push({ type: 'text', content: input.slice(lastIndex) })
  }

  return parts
}

interface MarkdownPart {
  type: 'text' | 'bold' | 'italic' | 'link'
  content: string
}