🗃️ Add expired to cache

⚡ Add sticker cache

lib/database/sticker.dart

@@ -0,0 +1,74 @@
+import 'dart:convert';
+
+import 'package:drift/drift.dart';
+import 'package:surface/types/attachment.dart';
+
+class SnStickerConverter extends TypeConverter<SnSticker, String>
+    with JsonTypeConverter2<SnSticker, String, Map<String, Object?>> {
+  const SnStickerConverter();
+
+  @override
+  SnSticker fromSql(String fromDb) {
+    return fromJson(jsonDecode(fromDb) as Map<String, dynamic>);
+  }
+
+  @override
+  String toSql(SnSticker value) {
+    return jsonEncode(toJson(value));
+  }
+
+  @override
+  SnSticker fromJson(Map<String, Object?> json) {
+    return SnSticker.fromJson(json);
+  }
+
+  @override
+  Map<String, Object?> toJson(SnSticker value) {
+    return value.toJson();
+  }
+}
+
+class SnLocalSticker extends Table {
+  IntColumn get id => integer().autoIncrement()();
+
+  TextColumn get alias => text()();
+
+  TextColumn get fullAlias => text()();
+
+  TextColumn get content => text().map(const SnStickerConverter())();
+
+  DateTimeColumn get createdAt => dateTime().withDefault(currentDateAndTime)();
+}
+
+class SnStickerPackConverter extends TypeConverter<SnStickerPack, String>
+    with JsonTypeConverter2<SnStickerPack, String, Map<String, Object?>> {
+  const SnStickerPackConverter();
+
+  @override
+  SnStickerPack fromSql(String fromDb) {
+    return fromJson(jsonDecode(fromDb) as Map<String, dynamic>);
+  }
+
+  @override
+  String toSql(SnStickerPack value) {
+    return jsonEncode(toJson(value));
+  }
+
+  @override
+  SnStickerPack fromJson(Map<String, Object?> json) {
+    return SnStickerPack.fromJson(json);
+  }
+
+  @override
+  Map<String, Object?> toJson(SnStickerPack value) {
+    return value.toJson();
+  }
+}
+
+class SnLocalStickerPack extends Table {
+  IntColumn get id => integer().autoIncrement()();
+
+  TextColumn get content => text().map(const SnStickerPackConverter())();
+
+  DateTimeColumn get createdAt => dateTime().withDefault(currentDateAndTime)();
+}