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

import {
  validateImageSignature,
  validateInventoryImageMetadata,
} from '../../src/modules/inventory/domain/inventory-image.js';

const validImage = {
  mimeType: 'image/jpeg',
  fileSize: 12000,
  width: 1200,
  height: 900,
};

test('accepts supported image metadata within configured limits', () => {
  assert.equal(validateInventoryImageMetadata(validImage), true);
});

test('rejects unsupported MIME types, oversized files, and oversized dimensions', () => {
  assert.throws(
    () => validateInventoryImageMetadata({ ...validImage, mimeType: 'image/gif' }),
    (error) => error.code === 'IMAGE_MIME_TYPE_UNSUPPORTED',
  );
  assert.throws(
    () => validateInventoryImageMetadata({ ...validImage, fileSize: 11 * 1024 * 1024 }),
    (error) => error.code === 'IMAGE_FILE_TOO_LARGE',
  );
  assert.throws(
    () => validateInventoryImageMetadata({ ...validImage, width: 10001 }),
    (error) => error.code === 'IMAGE_DIMENSIONS_INVALID',
  );
});

test('accepts matching image signatures and rejects mismatched bytes', () => {
  assert.equal(
    validateImageSignature(Buffer.from([0xff, 0xd8, 0xff, 0x00]), 'image/jpeg'),
    true,
  );
  assert.equal(
    validateImageSignature(
      Buffer.from([0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]),
      'image/png',
    ),
    true,
  );
  assert.throws(
    () => validateImageSignature(Buffer.from('not-an-image'), 'image/png'),
    (error) => error.code === 'IMAGE_SIGNATURE_INVALID',
  );
});