import { parseDbDateTime } from './timezone';

// Parses a MySQL DATETIME string correctly regardless of the Node
// process's own timezone — see lib/timezone.ts.
export function parseDbDate(s: string): Date {
  return parseDbDateTime(s);
}

export function diffMinutes(startStr: string, endStr: string | null): number | null {
  if (!endStr) return null;
  const start = parseDbDate(startStr);
  const end = parseDbDate(endStr);
  return Math.round((end.getTime() - start.getTime()) / 60000);
}