/**
 * Parses a raw email string into its constituent parts, including subject, headers, and body.
 *
 * @param emailText The raw email text to parse.
 * @returns An object containing the extracted email components.
 */
export function parseEmail(emailText: string) {
  const lines = emailText.split('\n');
  const headers: { [key: string]: string } = {};
  let bodyLines = [];
  let isBody = false;

  for (let line of lines) {
    if (!isBody) {
      if (line.trim() === '') {
        isBody = true;
        continue;
      }

      const colonIndex = line.indexOf(':');
      if (colonIndex !== -1) {
        const key = line.slice(0, colonIndex);
        headers[key] = line.slice(colonIndex + 1).trim();
      }
    } else
      bodyLines.push(line);
  }

  return {
    subject: headers['Subject'] || 'No subject',
    headers,
    body: bodyLines.join('\n').trim()
  };
}