import { pbkdf2Sync } from 'node:crypto';
import { writeFile } from 'node:fs/promises';
import { fileURLToPath } from 'node:url';
import { dirname, join, resolve } from 'node:path';
import { gzipSync } from 'node:zlib';
import { buildSeedOperations } from '../database.mjs';
import { createSeedDatabase } from '../src/data/seed.mjs';

const root = resolve(dirname(fileURLToPath(import.meta.url)), '..');
const outputPath = join(root, 'src', 'Eis.Infrastructure', 'Data', 'demo-seed-operations.json.gz');
const generatedAt = '2026-07-23T00:00:00.000Z';
const deterministicSalt = 'eis-dotnet-demo-seed';
const hashPassword = password => {
  const hash = pbkdf2Sync(password, deterministicSalt, 120000, 32, 'sha256').toString('hex');
  return `${deterministicSalt}:${hash}`;
};

const database = createSeedDatabase({
  nowIso: () => generatedAt,
  hashPassword
});
database.meta.version = 20;
const operations = buildSeedOperations(database);
const payload = {
  version: 1,
  schemaVersion: 20,
  generatedAt,
  summary: {
    schools: database.schools.length,
    users: database.users.length,
    candidates: database.candidateProfiles.length,
    registrations: database.registrations.length,
    results: database.results.length,
    admissionRecords: database.admissionRecords.length,
    firstRoundPreferences: database.admissionRecords.filter(
      item => item.kind === 'preference' && Number(item.payload?.round || 1) === 1
    ).length,
    operations: operations.length
  },
  operations
};
const compressed = gzipSync(Buffer.from(JSON.stringify(payload)), { level: 9 });
await writeFile(outputPath, compressed);
console.log(JSON.stringify({ outputPath, compressedBytes: compressed.length, ...payload.summary }));