import { run_regex } from '@sapphirecode/utilities';
import { debug } from './debug';

const logger = debug ('cookies');

function build_cookie (name: string, value: string): string {
  return `${name}=${value}; Secure; HttpOnly; SameSite=Strict`;
}

function extract_cookie (
  name: string|undefined,
  header: string|undefined
): string| null {
  logger (`extracting cookie ${name}`);

  const cookie_regex = /(?:^|;)\s*(?<name>[^;=]+)=(?<value>[^;]+)/gu;

  let result = null;

  run_regex (
    cookie_regex,
    header,
    (res: RegExpMatchArray) => {
      logger ('parsing cookie %s', res.groups?.name);
      if (res.groups?.name === name) {
        logger ('found cookie');
        result = res.groups?.value as string;
      }
    }
  );

  return result;
}

export { build_cookie, extract_cookie };