updateDi static method

void updateDi(String diPath, String name, String feature)

Updates the Dependency Injection (DI) file at diPath to register a new usecase.

Implementation

static void updateDi(String diPath, String name, String feature) {
  final file = File(diPath);
  if (!file.existsSync()) {
    print('DI file not found at $diPath. Skipping DI registration.');
    return;
  }

  final content = file.readAsStringSync();
  final pascal = Utils.pascal(name);

  // Add import
  final importLine = "import '../domain/usecases/${name}_usecase.dart';\n";
  if (content.contains(importLine)) return;

  // Find the last import and insert after it
  final lastImportIndex = content.lastIndexOf('import ');
  final endOfImports = content.indexOf('\n', lastImportIndex) + 1;

  var newContent =
      content.substring(0, endOfImports) +
      importLine +
      content.substring(endOfImports);

  // Add registration
  final registrationLine =
      "  sl.registerLazySingleton(() => ${pascal}UseCase(sl()));\n";
  if (newContent.contains(registrationLine)) return;

  // Find // Usecases or // Repository and insert before/after
  if (newContent.contains('// Usecases')) {
    newContent = newContent.replaceFirst(
      '// Usecases',
      '// Usecases\n$registrationLine',
    );
  } else {
    // Fallback: insert before the last closing brace
    final lastBrace = newContent.lastIndexOf('}');
    newContent =
        newContent.substring(0, lastBrace) +
        registrationLine +
        newContent.substring(lastBrace);
  }

  file.writeAsStringSync(newContent);
}