feat:增加日程模块

lib/service/calendar_service.dart

@@ -0,0 +1,43 @@
+import 'package:flisp_app/models/calendar.dart';
+import 'package:hive_flutter/hive_flutter.dart';
+
+class CalendarService {
+  static const String boxName = 'calendars';
+
+  Box<Calendar> get box => Hive.box<Calendar>(boxName);
+
+  Future<bool> addCalendar(Calendar calendar) async {
+    try {
+      await box.add(calendar);
+      return true;
+    } catch (e) {
+      return false;
+    }
+  }
+
+  List<Calendar> getAllCalendars() {
+    return box.values.toList();
+  }
+
+  Calendar getCalendarById(int id) {
+    return box.values.firstWhere((calendar) => calendar.id == id);
+  }
+
+  Future<bool> updateCalendar(Calendar calendar) async {
+    try {
+      await calendar.save();
+      return true;
+    } catch (e) {
+      return false;
+    }
+  }
+
+  Future<bool> deleteCalendar(Calendar calendar) async {
+    try {
+      await calendar.delete();
+      return true;
+    } catch (e) {
+      return false;
+    }
+  }
+}