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

import { createImageDerivativeProcessor } from '../../src/infrastructure/images/image-derivative-processor.js';

test('renders and stores thumbnail, medium, and large derivatives in order', async () => {
  const renderedWidths = [];
  const stored = [];
  const processor = createImageDerivativeProcessor({
    imageStorage: {
      async put(value) { stored.push(value); },
    },
    async renderer({ data, maxWidth }) {
      renderedWidths.push(maxWidth);
      return Buffer.concat([data, Buffer.from(`-${maxWidth}`)]);
    },
  });

  const results = await processor.process({
    sourceKey: 'inventory/item/front.jpg',
    data: Buffer.from('source'),
  });

  assert.deepEqual(renderedWidths, [320, 1280, 2400]);
  assert.deepEqual(results.map(({ name, key }) => ({ name, key })), [
    { name: 'thumbnail', key: 'inventory/item/front-thumbnail.webp' },
    { name: 'medium', key: 'inventory/item/front-medium.webp' },
    { name: 'large', key: 'inventory/item/front-large.webp' },
  ]);
  assert.equal(stored.length, 3);
  assert.equal(stored[1].data.toString(), 'source-1280');
});

test('requires a renderer implementation', () => {
  assert.throws(
    () => createImageDerivativeProcessor({ imageStorage: {} }),
    /renderer is required/,
  );
});