大幅変更＆環境バージョンアップ

lib/model/category.dart

@@ -0,0 +1,80 @@
+// lib/models/category.dart
+
+class NewCategory {
+  final int id;
+  final String categoryName;
+  final int categoryNumber;
+  final Duration duration;
+  final int numOfMember;
+  final bool family;
+  final bool female;
+  final String? time;
+
+  NewCategory({
+    required this.id,
+    required this.categoryName,
+    this.time,
+    required this.categoryNumber,
+    required this.duration,
+    required this.numOfMember,
+    required this.family,
+    required this.female,
+  });
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+          other is NewCategory &&
+              runtimeType == other.runtimeType &&
+              id == other.id;
+
+  @override
+  int get hashCode => id.hashCode;
+
+  factory NewCategory.fromJson(Map<String, dynamic> json) {
+    final fullCategoryName = json['category_name'] as String;
+    final parts = fullCategoryName.split('-');
+    final baseName = parts[0].trim();
+    final time = parts.length > 1 ? parts[1].trim() : null;
+
+    return NewCategory(
+      id: json['id'] ?? 0,
+      categoryName: json['category_name'] ?? 'Unknown Category',
+      time: time,
+      categoryNumber: json['category_number'] ?? 0,
+      duration: parseDuration(json['duration']),
+      numOfMember: json['num_of_member'] ?? 1,
+      family: json['family'] ?? false,
+      female: json['female'] ?? false,
+    );
+  }
+
+  String get baseCategory => categoryName.split('-')[0].trim();
+
+  static Duration parseDuration(String s) {
+    int hours = 0;
+    int minutes = 0;
+    int micros;
+    List<String> parts = s.split(':');
+    if (parts.length > 2) {
+      hours = int.parse(parts[parts.length - 3]);
+    }
+    if (parts.length > 1) {
+      minutes = int.parse(parts[parts.length - 2]);
+    }
+    micros = (double.parse(parts[parts.length - 1]) * 1000000).round();
+    return Duration(hours: hours, minutes: minutes, microseconds: micros);
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'category_name': categoryName,
+      'category_number': categoryNumber,
+      'duration': duration.inSeconds,
+      'num_of_member': numOfMember,
+      'family': family,
+      'female': female,
+    };
+  }
+}