import assert from 'node:assert/strict';
import test from 'node:test';
import {
  inspectInspectionSignatureFile,
  MAX_INSPECTION_SIGNATURE_BYTES,
} from '../../src/inspection-closing/inspection-signature-file';

const png = Buffer.from([137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 0]);

test('D5 signature accepts only PNG content and MIME', () => {
  assert.deepEqual(inspectInspectionSignatureFile({
    originalname: 'firma.png',
    mimetype: 'image/png',
    size: png.length,
    buffer: png,
  }), {
    originalName: 'firma.png',
    mimeType: 'image/png',
    extension: '.png',
  });
  assert.throws(() => inspectInspectionSignatureFile({
    originalname: 'firma.png',
    mimetype: 'image/png',
    size: 4,
    buffer: Buffer.from('test'),
  }));
  assert.throws(() => inspectInspectionSignatureFile({
    originalname: 'firma.png',
    mimetype: 'application/octet-stream',
    size: png.length,
    buffer: png,
  }));
});

test('D5 signature rejects empty and oversized files', () => {
  assert.throws(() => inspectInspectionSignatureFile(undefined));
  assert.throws(() => inspectInspectionSignatureFile({
    originalname: 'firma.png',
    mimetype: 'image/png',
    size: MAX_INSPECTION_SIGNATURE_BYTES + 1,
    buffer: Buffer.concat([png, Buffer.alloc(MAX_INSPECTION_SIGNATURE_BYTES)]),
  }));
});