export function parseFrontmatter(content: string): {
  frontmatter: Partial<Record<string, string>>;
  body: string;
} {
  const frontmatter: Record<string, string> = {};
  const normalized = content.replace(/\r\n/g, "\n");
  const lines = normalized.split("\n");

  if (!/^---\s*$/.test(lines[0] ?? "")) {
    return { frontmatter, body: normalized };
  }
  const endIndex = lines.findIndex((line, index) => index > 0 && /^---\s*$/.test(line));
  if (endIndex === -1) {
    return { frontmatter, body: normalized };
  }

  for (const line of lines.slice(1, endIndex)) {
    const match = line.match(/^([\w-]+):\s*(.*)$/);
    if (!match) {
      continue;
    }
    let value = match[2].trim();
    if (
      (value.startsWith('"') && value.endsWith('"')) ||
      (value.startsWith("'") && value.endsWith("'"))
    ) {
      value = value.slice(1, -1);
    }
    frontmatter[match[1]] = value;
  }

  return {
    frontmatter,
    body: lines
      .slice(endIndex + 1)
      .join("\n")
      .trim(),
  };
}