import { VisitStatus } from './types';

export const STATUS_LABEL: Record<VisitStatus, string> = {
  DRAFT: '임시저장',
  PENDING: '승인대기',
  APPROVED: '승인완료',
  REJECTED: '반려',
  CANCELLED: '취소',
  EXPIRED: '만료',
};

/** CSS class suffix for the status badge color. */
export const STATUS_CLASS: Record<VisitStatus, string> = {
  DRAFT: 'gray',
  PENDING: 'amber',
  APPROVED: 'green',
  REJECTED: 'red',
  CANCELLED: 'gray',
  EXPIRED: 'gray',
};

export function formatDateTime(iso?: string): string {
  if (!iso) return '-';
  const d = new Date(iso);
  if (Number.isNaN(d.getTime())) return iso;
  return d.toLocaleString('ko-KR', {
    year: 'numeric',
    month: '2-digit',
    day: '2-digit',
    hour: '2-digit',
    minute: '2-digit',
  });
}

const pad = (n: number) => String(n).padStart(2, '0');

/** Compact `MM.DD HH:mm` for dense tables. */
export function formatShort(iso?: string): string {
  if (!iso) return '-';
  const d = new Date(iso);
  if (Number.isNaN(d.getTime())) return iso;
  return `${pad(d.getMonth() + 1)}.${pad(d.getDate())} ${pad(d.getHours())}:${pad(d.getMinutes())}`;
}

/** Compact `YYYY.MM.DD HH:mm` for tight table cells. */
function compact(d: Date): string {
  return `${d.getFullYear()}.${pad(d.getMonth() + 1)}.${pad(d.getDate())} ${pad(d.getHours())}:${pad(d.getMinutes())}`;
}

/**
 * Compact visit period for table cells.
 * Same day → `2026.07.01 16:29 ~ 16:33`, otherwise → `2026.07.01 16:29 ~ 2026.07.02 09:00`.
 */
export function formatVisitRange(fromIso?: string, toIso?: string): string {
  if (!fromIso) return '-';
  const from = new Date(fromIso);
  if (Number.isNaN(from.getTime())) return fromIso;
  if (!toIso) return compact(from);
  const to = new Date(toIso);
  if (Number.isNaN(to.getTime())) return `${compact(from)} ~ ${toIso}`;
  const sameDay =
    from.getFullYear() === to.getFullYear() &&
    from.getMonth() === to.getMonth() &&
    from.getDate() === to.getDate();
  return `${compact(from)} ~ ${sameDay ? `${pad(to.getHours())}:${pad(to.getMinutes())}` : compact(to)}`;
}