Save and sort sheets by last access time

lib/storage_helper.dart

@@ -1,22 +1,36 @@
 import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:hive/hive.dart';
 
-enum StorageKey { url, jwt, email, password }
+enum SecureStorageKey { url, jwt, email, password }
 
 class StorageHelper {
+  final sheetAccessTimesBox = "sheetAccessTimes";
+
   late FlutterSecureStorage secureStorage;
 
   StorageHelper() {
-    AndroidOptions getAndroidOptions() => const AndroidOptions(
-          encryptedSharedPreferences: true,
-        );
+    AndroidOptions getAndroidOptions() =>
+        const AndroidOptions(encryptedSharedPreferences: true);
     secureStorage = FlutterSecureStorage(aOptions: getAndroidOptions());
   }
 
-  Future<String?> read(StorageKey key) {
+  Future<String?> readSecure(SecureStorageKey key) {
     return secureStorage.read(key: key.name);
   }
 
-  Future<void> write(StorageKey key, String value) {
+  Future<void> writeSecure(SecureStorageKey key, String value) {
     return secureStorage.write(key: key.name, value: value);
   }
+
+  Future<Map<String, DateTime>> readSheetAccessTimes() async {
+    final box = await Hive.openBox(sheetAccessTimesBox);
+    return box.toMap().map(
+      (k, v) => MapEntry(k as String, DateTime.parse(v as String)),
+    );
+  }
+
+  Future<void> writeSheetAccessTime(String uuid, DateTime datetime) async {
+    final box = await Hive.openBox(sheetAccessTimesBox);
+    await box.put(uuid, datetime.toIso8601String());
+  }
 }