hiddify-app/lib/core/utils/exception_handler.dart

import 'package:fpdart/fpdart.dart';
import 'package:hiddify/utils/utils.dart';
import 'package:rxdart/rxdart.dart';

mixin ExceptionHandler implements LoggerMixin {
  TaskEither<F, R> exceptionHandler<F, R>(
    Future<Either<F, R>> Function() run,
    F Function(Object error, StackTrace stackTrace) onError,
  ) {
    return TaskEither(() async {
      try {
        return await run();
      } catch (error, stackTrace) {
        return Left(onError(error, stackTrace));
      }
    });
  }
}

extension StreamExceptionHandler<R extends Object?> on Stream<R> {
  Stream<Either<F, R>> handleExceptions<F>(F Function(Object error, StackTrace stackTrace) onError) {
    return map(right<F, R>).onErrorReturnWith((error, stackTrace) {
      return Left(onError(error, stackTrace));
    });
  }
}

extension TaskEitherExceptionHandler<F, R> on TaskEither<F, R> {
  TaskEither<F, R> handleExceptions(F Function(Object error, StackTrace stackTrace) onError) {
    return TaskEither(() async {
      try {
        return await run();
      } catch (error, stackTrace) {
        return Left(onError(error, stackTrace));
      }
    });
  }
}