build method

  1. @override
FutureOr<UserToken> build()
override

Initialize an AsyncNotifier.

It is safe to use Ref.watch or Ref.listen inside this method.

If a dependency of this AsyncNotifier (when using Ref.watch) changes, then build will be re-executed. On the other hand, the AsyncNotifier will not be recreated. Its instance will be preserved between executions of build.

If this method throws or returns a future that fails, the error will be caught and an AsyncError will be emitted.

Implementation

@override
FutureOr<UserToken> build() async {
  localConfigService = ref.watch(userTokenLocalConfigServiceProvider);
  moodleMobileAppAuthService =
      ref.watch(authServiceProvider(kMoodleMobileAppServiceName));
  lbPlannerApiAuthService =
      ref.watch(authServiceProvider(kLbPlannerApiServiceName));

  if (!await localConfigService.canLoadConfig()) {
    throw StateError(
        "Could not load user tokens, as the file config file does not exist");
  }

  var tokens = await localConfigService.loadConfig();

  var moodleValid = await moodleMobileAppAuthService
      .validateToken(tokens.moodleMobileAppToken);
  var lbPlannerValid =
      await lbPlannerApiAuthService.validateToken(tokens.lbPlannerApiToken);

  if (!lbPlannerValid || !moodleValid) {
    throw StateError("Found invalid user tokens, please re-authenticate");
  }

  return tokens;
}