import { generateGrnNumber, grnOwnerSlug } from './grn.util';

/**
 * The GRN is mapped to the goods owner for BOTH directions, so a note is
 * identifiable by who owns the cargo. The reference slice stays the uniqueness
 * anchor — one owner can have several bookings received the same day.
 */
const date = new Date('2026-07-27T09:15:00Z');
const bookingId = '1a2b3c4d-1111-2222-3333-444455556666';

describe('GRN number', () => {
  it('maps an import GRN to the owner', () => {
    expect(generateGrnNumber('IMPORT', bookingId, date, 'Shafici Pharmaceutical')).toBe(
      'GRN-IMPORT-20260727-SHAFICIPHARM-1A2B3C4D',
    );
  });

  it('maps an export GRN to the owner the same way', () => {
    expect(generateGrnNumber('EXPORT', bookingId, date, 'Tria Trading PLC')).toBe(
      'GRN-EXPORT-20260727-TRIATRADINGP-1A2B3C4D',
    );
  });

  it('keeps the owner-less format when there is no owner (manual walk-in)', () => {
    expect(generateGrnNumber('WH', bookingId, date)).toBe('GRN-WH-20260727-1A2B3C4D');
    expect(generateGrnNumber('WH', bookingId, date, '   ')).toBe('GRN-WH-20260727-1A2B3C4D');
  });

  it('stays unique per booking for one owner on one day', () => {
    const a = generateGrnNumber('IMPORT', bookingId, date, 'Acme');
    const b = generateGrnNumber('IMPORT', 'ffffffff-9999-0000-0000-000000000000', date, 'Acme');
    expect(a).not.toBe(b);
  });

  it('strips punctuation and caps the owner segment', () => {
    expect(grnOwnerSlug('Ethio-Djibouti Railway S.C.')).toBe('ETHIODJIBOUT');
    expect(grnOwnerSlug('a/b c')).toBe('ABC');
    expect(grnOwnerSlug(null)).toBeNull();
  });
});