import assert from 'node:assert/strict';
import test from 'node:test';

import { createPricingProvider, createPricingProviderRegistry } from '../../src/modules/pricing/providers/pricing-provider.js';
import { createFixturePricingProvider } from '../../src/modules/pricing/providers/fixture-pricing-provider.js';

test('registers pricing providers behind a validated adapter contract', async () => {
  const provider = createPricingProvider({
    id: 'example',
    async observe() { return [{ priceMinor: 2500, sourceIdentifier: 'example-1' }]; },
  });
  const registry = createPricingProviderRegistry([provider]);

  assert.equal(registry.get('example'), provider);
  assert.deepEqual(await registry.get('example').observe({}), [{ priceMinor: 2500, sourceIdentifier: 'example-1' }]);
  assert.deepEqual(registry.list(), [provider]);
});

test('rejects malformed provider adapters and responses', async () => {
  assert.throws(() => createPricingProvider({ id: 'broken' }), /observe function is required/);
  const provider = createPricingProvider({ id: 'broken', async observe() { return null; } });
  await assert.rejects(() => provider.observe({}), /must return an observation array/);
});

test('fixture provider returns deterministic normalized observations', async () => {
  const [observation] = await createFixturePricingProvider().observe({
    productId: 'product-1', inventoryItemId: 'item-1', conditionId: 'condition-1',
  });
  assert.deepEqual(observation, {
    productId: 'product-1',
    inventoryItemId: 'item-1',
    conditionId: 'condition-1',
    priceMinor: 2500,
    currency: 'USD',
    sourceIdentifier: 'fixture-item-1',
    qualityScore: 50,
  });
});