- data backup

- I can't test it because I'm stuck on the login screen.

refilc/ios/livecard/lesson_model.swift

@@ -1,31 +1,40 @@
 import Foundation
+import ActivityKit
 
-class LessonData {
-  var color: String
-  var icon: String
-  var index: String
-  var title: String
-  var subtitle: String
-  var description: String
-  var startDate: Date
-  var endDate: Date
-  var date: ClosedRange<Date>
-  var nextSubject: String
-  var nextRoom: String
-    
-  init?() {
-    let sharedDefault = UserDefaults(suiteName: "group.refilc2.livecard")!
-      
-    self.color = sharedDefault.string(forKey: "color")!
-    self.icon = sharedDefault.string(forKey: "icon")!
-    self.index = sharedDefault.string(forKey: "index")!
-    self.title = sharedDefault.string(forKey: "title")!
-    self.subtitle = sharedDefault.string(forKey: "subtitle")!
-    self.description = sharedDefault.string(forKey: "description")!
-    self.startDate = Date(timeIntervalSince1970: Double(sharedDefault.string(forKey: "startDate")!)! / 1000)
-    self.endDate = Date(timeIntervalSince1970: Double(sharedDefault.string(forKey: "endDate")!)! / 1000)
-    date = self.startDate...self.endDate
-    self.nextSubject = sharedDefault.string(forKey: "nextSubject")!
-    self.nextRoom = sharedDefault.string(forKey: "nextRoom")!
-  }
+public struct LessonData {
+        var color: String
+        var icon: String
+        var index: String
+        var title: String
+        var subtitle: String
+        var description: String
+        var startDate: Date
+        var endDate: Date
+        var date: ClosedRange<Date>
+        var nextSubject: String
+        var nextRoom: String
+        
+        init(from dictionary: [String: Any]) {
+            self.color = dictionary["color"] as? String ?? ""
+            self.icon = dictionary["icon"] as? String ?? ""
+            self.index = dictionary["index"] as? String ?? ""
+            self.title = dictionary["title"] as? String ?? ""
+            self.subtitle = dictionary["subtitle"] as? String ?? ""
+            self.description = dictionary["description"] as? String ?? ""
+            self.nextSubject = dictionary["nextSubject"] as? String ?? ""
+            self.nextRoom = dictionary["nextRoom"] as? String ?? ""
+
+            if let startDateStr = dictionary["startDate"] as? String, let startDateInt = Int(startDateStr) {
+                self.startDate = Date(timeIntervalSince1970: TimeInterval(startDateInt) / 1000)
+            } else {
+                self.startDate = Date()
+            }
+
+            if let endDateStr = dictionary["endDate"] as? String, let endDateInt = Int(endDateStr) {
+                self.endDate = Date(timeIntervalSince1970: TimeInterval(endDateInt) / 1000)
+            } else {
+                self.endDate = Date()
+            }
+            date = self.startDate...self.endDate
+        }
 }