execute method

@override Future<CommandResult> execute(String args, ToolUseContext context)

Execute the command.

Implementation

@override
Future<CommandResult> execute(String args, ToolUseContext context) async {
  if (isAuthenticated()) {
    return const TextCommandResult(
      'Already authenticated. Use /logout first to switch accounts.',
    );
  }

  final key = args.trim();
  if (key.isEmpty) {
    // Check environment
    final envKey = Platform.environment['ANTHROPIC_API_KEY'];
    if (envKey != null && envKey.isNotEmpty) {
      final success = await onLogin(envKey);
      if (success) {
        return const TextCommandResult(
          'Authenticated using ANTHROPIC_API_KEY from environment.',
        );
      }
      return const TextCommandResult(
        'ANTHROPIC_API_KEY found but authentication failed. '
        'Check that your key is valid.',
      );
    }
    return const TextCommandResult(
      'No API key provided.\n'
      'Usage: /login <api-key>\n'
      'Or set ANTHROPIC_API_KEY environment variable.',
    );
  }

  if (!key.startsWith('sk-ant-')) {
    return const TextCommandResult(
      'Invalid API key format. Anthropic keys start with "sk-ant-".',
    );
  }

  final success = await onLogin(key);
  if (success) {
    return const TextCommandResult('Authenticated successfully.');
  }
  return const TextCommandResult(
    'Authentication failed. Check your API key.',
  );
}