store_utils: add fp wrappers for Box

lib/core/store_utils.dart

@@ -54,3 +54,25 @@ extension HiveFP on HiveInterface {
         );
   }
 }
+
+extension HiveBoxFP<E> on Box<E> {
+  /// [Task] wrapper around [put].
+  Task<Unit> putAsTask(dynamic key, E value) {
+    return Task(() => put(key, value)).map((_) => unit);
+  }
+
+  /// [Task] wrapper around [delete].
+  Task<Unit> deleteAsTask(dynamic key) {
+    return Task(() => delete(key)).map((_) => unit);
+  }
+
+  /// [Task] wrapper around [clear].
+  Task<Unit> clearAsTask() {
+    return Task(() => clear()).map((_) => unit);
+  }
+
+  /// [TaskOption] wrapper around [get].
+  TaskOption<E> getAsTaskOption(dynamic key) {
+    return TaskOption(() async => Option.fromNullable(get(key)));
+  }
+}

lib/features/ticket/domain/usecases/consume_ticket.dart

@@ -1,4 +1,5 @@
 import 'package:coffeecard/core/errors/failures.dart';
+import 'package:coffeecard/core/store_utils.dart';
 import 'package:coffeecard/features/receipt/domain/entities/receipt.dart';
 import 'package:coffeecard/features/ticket/data/datasources/ticket_remote_data_source.dart';
 import 'package:fpdart/fpdart.dart';
@@ -22,10 +23,8 @@ class ConsumeTicket {
     int productId,
     int menuItemId,
   ) {
-    return TaskEither(() async {
-      final cache = await Hive.openBox<int>('lastUsedMenuItemByProductId');
-      await cache.put(productId, menuItemId);
-      return const Right(unit);
-    });
+    return Hive.openBoxAsTask<int>('lastUsedMenuItemByProductId')
+        .flatMap((box) => box.putAsTask(productId, menuItemId))
+        .toTaskEither<Failure>();
   }
 }

lib/features/ticket/domain/usecases/load_tickets.dart

@@ -54,6 +54,7 @@ class LoadTickets {
     final getCachedMenuItemId = TaskEither<Failure, int>(() async {
       final cache = await Hive.openBox<int>('lastUsedMenuItemByProductId');
       return Either.fromNullable(
+        // TODO(marfavi): Use getAsTaskOption instead.
         cache.get(ticket.product.id),
         () => const LocalStorageFailure('No last used menu item found'),
       );

lib/src/authentication/repository.dart

@@ -1,3 +1,4 @@
+import 'package:coffeecard/core/store_utils.dart';
 import 'package:coffeecard/features/authentication.dart';
 import 'package:fpdart/fpdart.dart';
 import 'package:hive_flutter/hive_flutter.dart';
@@ -11,25 +12,30 @@ class AuthenticationRepository {
     required this.logger,
   });
 
+  /// The [Box] used to store the [AuthenticationInfo].
+  ///
+  /// Should be encrypted using [HiveFP.openEncryptedBox].
   final Box<AuthenticationInfo> store;
   final Logger logger;
 
-  /// Store the authentication info in an encrypted Hive box.
   Task<Unit> saveAuthenticationInfo(AuthenticationInfo info) {
-    return Task(() => store.put(_authenticationInfoKey, info))
-        .map((_) => logger.d('Authentication info saved'))
-        .map((_) => unit);
+    return store
+        .putAsTask(_authenticationInfoKey, info)
+        .andThen(() => _logMessage('Authentication info saved.'));
   }
 
   TaskOption<AuthenticationInfo> getAuthenticationInfo() {
-    return TaskOption.fromNullable(store.get(_authenticationInfoKey));
+    return store.getAsTaskOption(_authenticationInfoKey);
   }
 
   Task<Unit> clearAuthenticationInfo() {
-    return Task(() async {
-      await store.clear();
-      logger.d('Authentication info cleared');
-      return unit;
-    });
+    return store
+        .clearAsTask()
+        .andThen(() => _logMessage('Authentication info cleared.'));
   }
+
+  Task<Unit> _logMessage(String message) => Task(() async {
+        logger.d(message);
+        return unit;
+      });
 }