export function plazaUtmQuery(params: {
  source?: string;
  medium: string;
  campaign: string;
  ref?: string;
}) {
  const query = new URLSearchParams();
  query.set('utm_source', params.source ?? 'plaza');
  query.set('utm_medium', params.medium);
  query.set('utm_campaign', params.campaign);
  if (params.ref) query.set('ref', params.ref);
  return query.toString();
}

export function mindSpaceSignupUrl(params: {
  medium: string;
  campaign: string;
  ref?: string;
  returnTo?: string;
}) {
  const base = process.env.NEXT_PUBLIC_MINDSPACE_BASE ?? process.env.NEXT_PUBLIC_SITE_BASE ?? 'https://go.tkmind.cn';
  const query = plazaUtmQuery(params);
  const returnParam = params.returnTo ? `&return_to=${encodeURIComponent(params.returnTo)}` : '';
  return `${base.replace(/\/$/, '')}?${query}${returnParam}`;
}