normalizeGitRemoteUrl function

String? normalizeGitRemoteUrl(String url)

Normalise a git remote URL to a canonical form for hashing. Converts SSH and HTTPS URLs to: host/owner/repo (lowercase, no .git).

Implementation

String? normalizeGitRemoteUrl(String url) {
  final trimmed = url.trim();
  if (trimmed.isEmpty) return null;

  // SSH format: git@host:owner/repo.git
  final sshMatch = RegExp(r'^git@([^:]+):(.+?)(?:\.git)?$').firstMatch(trimmed);
  if (sshMatch != null) {
    return '${sshMatch.group(1)}/${sshMatch.group(2)}'.toLowerCase();
  }

  // HTTPS/SSH URL format
  final urlMatch = RegExp(
    r'^(?:https?|ssh)://(?:[^@]+@)?([^/]+)/(.+?)(?:\.git)?$',
  ).firstMatch(trimmed);
  if (urlMatch != null) {
    final host = urlMatch.group(1)!;
    final path = urlMatch.group(2)!;

    if (_isLocalHost(host) && path.startsWith('git/')) {
      final proxyPath = path.substring(4);
      final segments = proxyPath.split('/');
      if (segments.length >= 3 && segments[0].contains('.')) {
        return proxyPath.toLowerCase();
      }
      return 'github.com/$proxyPath'.toLowerCase();
    }

    return '$host/$path'.toLowerCase();
  }

  return null;
}