opt: danmaku filter (#486)

lib/models/user/danmaku_rule_adapter.dart

@@ -0,0 +1,36 @@
+import 'package:PiliPlus/models/user/danmaku_rule.dart';
+import 'package:hive/hive.dart';
+
+class RuleFilterAdapter extends TypeAdapter<RuleFilter> {
+  @override
+  final int typeId = 12;
+
+  @override
+  RuleFilter read(BinaryReader reader) {
+    return RuleFilter(
+        reader.readStringList(),
+        reader
+            .readStringList()
+            .map((i) => RegExp(i, caseSensitive: false))
+            .toList(),
+        reader.readStringList().toSet());
+  }
+
+  @override
+  void write(BinaryWriter writer, RuleFilter obj) {
+    writer
+      ..writeStringList(obj.dmFilterString)
+      ..writeStringList(obj.dmRegExp.map((i) => i.pattern).toList())
+      ..writeStringList(obj.dmUid.toList());
+  }
+
+  @override
+  int get hashCode => typeId.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is RuleFilterAdapter &&
+          runtimeType == other.runtimeType &&
+          typeId == other.typeId;
+}