sendOtp method

Future<OtpData?> sendOtp(String phone)

Step 1: Send OTP to the given phone number.

Implementation

Future<OtpData?> sendOtp(String phone) async {
  assert(
    _config.authMethod == AuthMethod.phone,
    'sendOtp is only available when authMethod == AuthMethod.phone',
  );
  state = state.copyWith(status: AuthStatus.authenticating, error: null);
  try {
    final data = await _phoneAuthService.sendOtp(phone);
    state = state.copyWith(status: AuthStatus.unauthenticated);
    return data;
  } on DioException catch (e) {
    _handleError(e);
    return null;
  }
}