classifyWalletInput function

WalletInputKind? classifyWalletInput(String input)

Classifies locally recognizable wallet input without performing network I/O.

Implementation

WalletInputKind? classifyWalletInput(String input) {
  final value = _normalizeWalletInput(input);
  if (value.isEmpty) return null;

  final uri = Uri.tryParse(value);
  if (uri?.scheme.toLowerCase() == 'nostr+walletconnect') {
    try {
      NostrWalletConnectUri.parseConnectionUri(value);
      return WalletInputKind.nwc;
    } catch (_) {
      return null;
    }
  }

  final normalizedLower = value.toLowerCase();
  if (normalizedLower.startsWith('lno1') ||
      (uri?.scheme.toLowerCase() == 'bitcoin' &&
          uri!.queryParameters.entries.any(
            (entry) =>
                entry.key.toLowerCase() == 'lno' && entry.value.isNotEmpty,
          ))) {
    return WalletInputKind.bolt12;
  }

  var address = value;
  if (address.startsWith('₿')) address = address.substring(1);
  final addressParts = address.split('@');
  if (addressParts.length == 2 &&
      addressParts.every((part) => part.isNotEmpty) &&
      !address.contains(RegExp(r'\s'))) {
    return WalletInputKind.lightningAddress;
  }

  if (uri?.scheme.toLowerCase() == 'https' && uri!.host.isNotEmpty) {
    return WalletInputKind.cashuMint;
  }
  return null;
}