askChoice method

@override String askChoice(String question, List<String> options, { String? defaultValue, })

Prompts to select one choice from options.

Implementation

@override
String askChoice(
  String question,
  List<String> options, {
  String? defaultValue,
}) {
  if (options.isEmpty) {
    throw ArgumentError('Options list cannot be empty.');
  }

  _out.writeln('? $question');
  for (int i = 0; i < options.length; i++) {
    final isDefault = options[i] == defaultValue ? ' (default)' : '';
    _out.writeln('  ${i + 1}) ${options[i]}$isDefault');
  }

  final defaultChoice = defaultValue ?? options.first;

  while (true) {
    _out.write('Select an option (1-${options.length}) [$defaultChoice]: ');
    final input = _in.readLineSync()?.trim() ?? '';

    if (input.isEmpty) {
      return defaultChoice;
    }

    final choiceIndex = int.tryParse(input);
    if (choiceIndex != null &&
        choiceIndex >= 1 &&
        choiceIndex <= options.length) {
      return options[choiceIndex - 1];
    }

    // Check if user typed option string directly
    if (options.contains(input)) {
      return input;
    }

    _out.writeln(
        'Invalid choice. Please enter a number between 1 and ${options.length}.');
  }
}