release: seal Focus Seed 1.0.0

lib/src/models/habit.dart

@@ -0,0 +1,43 @@
+class Habit {
+  const Habit({
+    required this.id,
+    required this.title,
+    required this.createdAt,
+    required this.completedDates,
+  });
+
+  final String id;
+  final String title;
+  final DateTime createdAt;
+  final Set<String> completedDates;
+
+  Habit copyWith({String? title, Set<String>? completedDates}) {
+    return Habit(
+      id: id,
+      title: title ?? this.title,
+      createdAt: createdAt,
+      completedDates: completedDates ?? this.completedDates,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'title': title,
+      'createdAt': createdAt.toIso8601String(),
+      'completedDates': completedDates.toList()..sort(),
+    };
+  }
+
+  static Habit fromJson(Map<String, dynamic> json) {
+    return Habit(
+      id: json['id'] as String,
+      title: json['title'] as String,
+      createdAt: DateTime.parse(json['createdAt'] as String),
+      completedDates:
+          ((json['completedDates'] as List?) ?? const [])
+              .map((value) => value.toString())
+              .toSet(),
+    );
+  }
+}