toBytes method

Implementation

Uint8List toBytes() {
  if (version == 0) {
    // CIDv0 is just the multihash
    return multihash.toBytes();
  }

  // CIDv1: <version><codec><multihash>
  final buffer = BytesBuilder();
  buffer.addByte(0x01); // version 1

  // Encode codec as varint
  int codecCode;
  try {
    codecCode = EncodingUtils.getCodeFromCodec(codec ?? 'raw');
  } catch (e) {
    // If codec not found, fallback to raw or throw?
    // Let's assume raw if unknown? Or throw to prevent bad CIDs?
    // Existing code defaulted to _raw.
    // But existing code only checked 'dag-pb'.
    // If I pass 'dag-cbor', it defaulted to raw.
    // Now I want it to find 'dag-cbor'.
    // If 'unknown', throw.
    throw FormatException('Unsupported codec during CID encoding: $codec');
  }
  buffer.add(_encodeVarint(codecCode));

  // Add multihash
  buffer.add(multihash.toBytes());

  return buffer.toBytes();
}