/// Minimal `.env` parser (KEY=VALUE, `#` comments, optional quotes).
///
/// Kept tiny and dependency-free so config loading is easy to test and does
/// not pull `flutter_dotenv` into the production graph.
Map<String, String> parseEnvFile(String source) {
  final values = <String, String>{};

  for (final raw in source.split(RegExp(r'\r?\n'))) {
    final line = raw.trim();
    if (line.isEmpty || line.startsWith('#')) continue;

    final separator = line.indexOf('=');
    if (separator <= 0) continue;

    final key = line.substring(0, separator).trim();
    if (key.isEmpty) continue;

    var value = line.substring(separator + 1).trim();
    if (value.length >= 2) {
      final quote = value[0];
      if ((quote == '"' || quote == "'") && value.endsWith(quote)) {
        value = value.substring(1, value.length - 1);
      }
    }

    values[key] = value;
  }

  return values;
}

String normalizeUrl(String url) => url.trim().replaceAll(RegExp(r'/$'), '');

bool parseEnvFlag(String? raw, {bool fallback = false}) {
  if (raw == null || raw.trim().isEmpty) return fallback;
  return switch (raw.trim().toLowerCase()) {
    '1' || 'true' || 'yes' || 'on' => true,
    '0' || 'false' || 'no' || 'off' => false,
    _ => fallback,
  };
}