TF-148 Add data layer for cleanup email cache

lib/features/cleanup/data/datasource_impl/cleanup_datasource_impl.dart

@@ -0,0 +1,42 @@
+
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:tmail_ui_user/features/cleanup/data/datasource/cleanup_datasource.dart';
+import 'package:tmail_ui_user/features/cleanup/data/utils/cleanup_constant.dart';
+import 'package:tmail_ui_user/features/cleanup/domain/model/cleanup_rule.dart';
+import 'package:tmail_ui_user/features/thread/data/local/email_cache_manager.dart';
+
+class CleanupDataSourceImpl extends CleanupDataSource {
+
+  final EmailCacheManager emailCacheManager;
+  final SharedPreferences sharedPreferences;
+
+  CleanupDataSourceImpl(this.emailCacheManager, this.sharedPreferences);
+
+  @override
+  Future<bool> cleanEmailCache(CleanupRule cleanupRule) {
+    return Future.sync(() async {
+      return await emailCacheManager.clean(cleanupRule);
+    }).catchError((error) {
+      throw error;
+    });
+  }
+
+  @override
+  Future<void> saveTimeCleanEmail(DateTime lastTime) {
+    return Future.sync(() async {
+      await sharedPreferences.setString(CleanupConstant.keyTimeCleanupEmail, lastTime.toIso8601String());
+    }).catchError((error) {
+      throw error;
+    });
+  }
+
+  @override
+  Future<DateTime?> getTimeCleanEmail() {
+    return Future.sync(() async {
+      final lastTime = sharedPreferences.getString(CleanupConstant.keyTimeCleanupEmail);
+      return DateTime.tryParse(lastTime ?? '');
+    }).catchError((error) {
+      throw error;
+    });
+  }
+}