#!/usr/bin/env node
/**
 * Blitzkrieg Step 2–3: Validate token list(s) and emit deterministic hash (hash lock).
 * Usage: node token-lists/scripts/validate-and-hash.js [dbis-138.tokenlist.json] [all-mainnet.tokenlist.json]
 * Default: token-lists/lists/dbis-138.tokenlist.json, then token-lists/lists/all-mainnet.tokenlist.json
 * Exits 0 if validation passes and hashes are printed; non-zero if validation fails.
 */

import { readFileSync, existsSync } from 'fs';
import { createHash } from 'crypto';
import { fileURLToPath } from 'url';
import { dirname, resolve } from 'path';
import { execSync } from 'child_process';

const __dirname = dirname(fileURLToPath(import.meta.url));
const ROOT = resolve(__dirname, '../..');
const LISTS_DIR = resolve(ROOT, 'token-lists/lists');

const defaults = [
  resolve(LISTS_DIR, 'dbis-138.tokenlist.json'),
  resolve(LISTS_DIR, 'all-mainnet.tokenlist.json')
];

const files = process.argv.slice(2).length ? process.argv.slice(2) : defaults.filter(f => existsSync(f));

if (files.length === 0) {
  console.error('No list files found. Usage: node validate-and-hash.js [file1 ...]');
  process.exit(1);
}

let failed = false;
for (const f of files) {
  const path = f.startsWith('/') ? f : resolve(process.cwd(), f);
  try {
    const raw = readFileSync(path, 'utf8');
    JSON.parse(raw); // ensure valid JSON
    const hash = createHash('sha256').update(raw).digest('hex');
    console.log(`${path}\tSHA256:${hash}`);
    // Run schema validation if validate-token-list.js exists
    try {
      execSync(`node "${resolve(__dirname, 'validate-token-list.js')}" "${path}"`, { stdio: 'pipe', cwd: ROOT });
    } catch (_) {
      console.warn(`Schema validation skipped or failed for ${path}`);
    }
  } catch (e) {
    console.error(`${path}: ${e.message}`);
    failed = true;
  }
}
process.exit(failed ? 1 : 0);