#54 new: grouped snippet & tab snippet

lib/data/model/app/tab.dart

@@ -1 +1 @@
-enum AppTab { servers, encode, ping }
+enum AppTab { servers, snippet, ping }

lib/data/model/server/snippet.dart

@@ -8,16 +8,20 @@ class Snippet {
   late String name;
   @HiveField(1)
   late String script;
-  Snippet(this.name, this.script);
+  @HiveField(2)
+  List<String>? tags;
+  Snippet(this.name, this.script, {this.tags});
 
   Snippet.fromJson(Map<String, dynamic> json) {
     name = json['name'].toString();
     script = json['script'].toString();
+    tags = json['tags'].cast<String>();
   }
   Map<String, dynamic> toJson() {
     final data = <String, dynamic>{};
     data['name'] = name;
     data['script'] = script;
+    data['tags'] = tags;
     return data;
   }
 }

lib/data/model/server/snippet.g.dart

@@ -19,17 +19,20 @@ class SnippetAdapter extends TypeAdapter<Snippet> {
     return Snippet(
       fields[0] as String,
       fields[1] as String,
+      tags: (fields[2] as List?)?.cast<String>(),
     );
   }
 
   @override
   void write(BinaryWriter writer, Snippet obj) {
     writer
-      ..writeByte(2)
+      ..writeByte(3)
       ..writeByte(0)
       ..write(obj.name)
       ..writeByte(1)
-      ..write(obj.script);
+      ..write(obj.script)
+      ..writeByte(2)
+      ..write(obj.tags);
   }
 
   @override

lib/data/provider/snippet.dart

@@ -15,31 +15,22 @@ class SnippetProvider extends BusyProvider {
   }
 
   void add(Snippet snippet) {
-    if (have(snippet)) return;
     _snippets.add(snippet);
     _store.put(snippet);
     notifyListeners();
   }
 
   void del(Snippet snippet) {
-    if (!have(snippet)) return;
-    _snippets.removeAt(index(snippet));
+    _snippets.remove(snippet);
     _store.delete(snippet);
     notifyListeners();
   }
 
-  int index(Snippet snippet) {
-    return _snippets.indexWhere((e) => e.name == snippet.name);
-  }
-
-  bool have(Snippet snippet) {
-    return index(snippet) != -1;
-  }
-
   void update(Snippet old, Snippet newOne) {
-    if (!have(old)) return;
-    _snippets[index(old)] = newOne;
+    _store.delete(old);
     _store.put(newOne);
+    _snippets.remove(old);
+    _snippets.add(newOne);
     notifyListeners();
   }