import assert from 'node:assert/strict';
import { createHash } from 'node:crypto';
import { execFileSync } from 'node:child_process';
import { mkdtempSync, readFileSync, statSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { join, resolve } from 'node:path';

const root = resolve(import.meta.dirname, '../..');
const output = mkdtempSync(join(tmpdir(), 'easyai-reference-images-'));
execFileSync('node', [join(root, 'scripts/acceptance/generate-reference-images.mjs'), output]);

const hashes = new Set();
for (let index = 1; index <= 3; index += 1) {
  const path = join(output, `production-acceptance-reference-${index}.png`);
  const payload = readFileSync(path);
  assert.deepEqual([...payload.subarray(0, 8)], [137, 80, 78, 71, 13, 10, 26, 10]);
  assert.equal(payload.readUInt32BE(16), 512);
  assert.equal(payload.readUInt32BE(20), 512);
  assert.equal(statSync(path).mode & 0o777, 0o600);
  hashes.add(createHash('sha256').update(payload).digest('hex'));
}
assert.equal(hashes.size, 3);