import test from 'node:test';
import assert from 'node:assert/strict';
import { prepareCommand, canonical, mayHaveCommitted } from '../src/utils/command-core.mjs';

test('a timeout retry preserves the original payload and key', () => {
  const first = prepareCommand(null, { sku_id: 12, quantity: 8 }, () => 'request-1');
  const stored = JSON.parse(JSON.stringify(first));
  const retry = prepareCommand(stored, { quantity: 8, sku_id: 12 }, () => {
    throw new Error('must not generate another key');
  });
  assert.deepEqual(retry, first);
});

test('changing an unresolved command cannot silently create a second booking', () => {
  const first = prepareCommand(null, { quantity: 8 }, () => 'request-1');
  assert.throws(
    () => prepareCommand(first, { quantity: 9 }, () => 'request-2'),
    /上次提交结果尚未确认/,
  );
});

test('a completed command permits a new operation with a new key', () => {
  const first = prepareCommand(null, { quantity: 8 }, () => 'request-1');
  const second = prepareCommand(null, { quantity: 8 }, () => 'request-2');
  assert.notEqual(first.request_key, second.request_key);
});

test('checkout retries repair invalid stored keys before sending', () => {
  const payload = { items: [{ package_id: 1, quantity: 2 }], invoice: null };
  for (const key of [undefined, null, '', 123, 'short', 'x'.repeat(81), 'invalid key']) {
    const stored = { ...payload, request_key: key };
    const repaired = prepareCommand(stored, payload, () => 'checkout-repaired-1');
    assert.deepEqual(repaired, { ...payload, request_key: 'checkout-repaired-1' });
    assert.deepEqual(
      prepareCommand(repaired, payload, () => { throw new Error('must preserve repaired key'); }),
      repaired,
    );
  }
});

test('invalid newly generated keys never reach the transport', () => {
  assert.throws(() => prepareCommand(null, {}, () => ''), /请求标识/);
});

test('nested checkout data compares by content, while photo selection order is preserved', () => {
  assert.equal(
    canonical({ items: [{ package_id: 1, quantity: 2 }], invoice: null }),
    canonical({ invoice: null, items: [{ quantity: 2, package_id: 1 }] }),
  );
  assert.notEqual(canonical({ photo_ids: [1, 2] }), canonical({ photo_ids: [2, 1] }));
});

test('network and server failures retain the key; explicit business rejections do not', () => {
  for (const status of [0, 500, 502, 503, 504]) assert.equal(mayHaveCommitted(status), true);
  for (const status of [400, 401, 403, 409, 422, 429])
    assert.equal(mayHaveCommitted(status), false);
});