/** Compare the structure of a TP5-made file against one we authored. */
import { readFileSync } from 'node:fs';

function dump(buf, label) {
  const dv = new DataView(buf.buffer, buf.byteOffset, buf.byteLength);
  const ptrs = [];
  for (let i = 0x200; ; i += 4) { const v = dv.getUint32(i, true); if (v === 0xffffffff) break; ptrs.push(v); }
  const hx = (a, b) => Buffer.from(buf.subarray(a, b)).toString('hex').replace(/(..)/g, '$1 ').trim();
  console.log(`=== ${label}   (${buf.length} bytes, ${ptrs.length} destinations)`);
  console.log(`  0x30..0x48 : ${hx(0x30, 0x48)}`);
  console.log(`  0x80..0xa0 : ${hx(0x80, 0xa0)}`);
  console.log(`  0xa0..0xb0 : ${hx(0xa0, 0xb0)}`);
  for (let r = 0; r < 2 && r < ptrs.length; r++) {
    const q = ptrs[r];
    console.log(`  rec${r} name   : ${JSON.stringify(String.fromCharCode(...buf.subarray(q, q + 0x10)))}`);
    console.log(`  rec${r} line   : ${JSON.stringify(String.fromCharCode(...buf.subarray(q + 0x10, q + 0x20)))}`);
    console.log(`  rec${r} third  : ${JSON.stringify(String.fromCharCode(...buf.subarray(q + 0x20, q + 0x30)))}`);
    console.log(`  rec${r} tail   : ${hx(q + 0x30, q + 0x60)}`);
    console.log(`  rec${r} tail2  : ${hx(q + 0x60, q + 0x80)}`);
  }
}

const a = new Uint8Array(readFileSync(new URL('../samples/EXPRESS 1.td5', import.meta.url)));
const b = new Uint8Array(readFileSync(new URL('./authored.td5', import.meta.url)));
dump(a, 'TP5 original — works on the controller');
console.log();
dump(b, 'DestoGod, built from scratch');