import { describe, it, expect } from 'vitest';
import type { NostrEvent } from '@nostrify/nostrify';
import { parseListingCoord, isTradeAttestation, TRADE_ATTESTATION_KIND } from './useTradeAttestations';

function ev(partial: Partial<NostrEvent> & Pick<NostrEvent, 'kind' | 'pubkey' | 'id'>): NostrEvent {
  return { content: '', created_at: 0, sig: '', tags: [], ...partial } as NostrEvent;
}

describe('parseListingCoord', () => {
  it('parses a 30402 coordinate', () => {
    expect(parseListingCoord('30402:abc123:my-listing')).toEqual({
      kind: 30402,
      pubkey: 'abc123',
      identifier: 'my-listing',
    });
  });

  it('keeps colons that are part of the identifier', () => {
    expect(parseListingCoord('30402:abc123:slug:part2')?.identifier).toBe('slug:part2');
  });

  it('returns null for missing or malformed coords', () => {
    expect(parseListingCoord(undefined)).toBeNull();
    expect(parseListingCoord('nope')).toBeNull();
    expect(parseListingCoord('30402:onlypubkey')).toBeNull();
  });
});

describe('isTradeAttestation', () => {
  it('accepts a 31871 attestation of a 30402 listing with a counterparty', () => {
    const e = ev({
      kind: TRADE_ATTESTATION_KIND,
      pubkey: 'seller',
      id: 'a1',
      tags: [['a', '30402:seller:deck'], ['p', 'buyer'], ['s', 'valid']],
    });
    expect(isTradeAttestation(e)).toBe(true);
  });

  it('rejects an attestation without a counterparty', () => {
    const e = ev({
      kind: TRADE_ATTESTATION_KIND,
      pubkey: 'x',
      id: 'a2',
      tags: [['a', '30402:x:y'], ['s', 'valid']],
    });
    expect(isTradeAttestation(e)).toBe(false);
  });

  it('rejects non-listing assertions and other kinds', () => {
    expect(
      isTradeAttestation(ev({ kind: TRADE_ATTESTATION_KIND, pubkey: 'x', id: 'a3', tags: [['a', '35000:x:y'], ['p', 'z']] })),
    ).toBe(false);
    expect(
      isTradeAttestation(ev({ kind: 1, pubkey: 'x', id: 'a4', tags: [['a', '30402:x:y'], ['p', 'z']] })),
    ).toBe(false);
  });
});