fix(PPG/Event): change getEvents to use DTO

Sources/PPG_framework/Models/Event.swift

@@ -8,12 +8,28 @@
 
 import Foundation
 
+public struct EventDTO {
+    init(event: Event) {
+        self.timestamp = event.timestamp
+        self.type = event.eventType.rawValue
+        self.campaign = event.campaign
+        self.button = event.button
+        self.sentAt = event.sentAt
+    }
+
+    var timestamp: String
+    var type: String
+    var campaign: String
+    var button: Int?
+    var sentAt: Date?
+}
+
 // Protocol defining the method for sending events.
 protocol EventSender {
     func send(event: Event, handler: @escaping (_ result: ActionResult) -> Void)
 }
 
-public class Event: Codable, CustomStringConvertible {
+class Event: Codable, CustomStringConvertible {
 
     public var eventType: EventType
     public var timestamp: String  // ISO8601 formatted timestamp
@@ -81,6 +97,10 @@ public class Event: Codable, CustomStringConvertible {
         """
     }
 
+    public func toDTO() -> EventDTO {
+        return EventDTO(event: self)
+    }
+
     func getKey() -> String {
         return "\(eventType.rawValue)_\(button ?? 0)_\(campaign)"
     }

Sources/PPG_framework/PPG.swift

@@ -183,7 +183,7 @@ public class PPG: NSObject, UNUserNotificationCenterDelegate {
         ApiService.shared.sendBeacon(beacon: beacon, handler: handler)
     }
 
-    public static func getEvents() -> [Event] {
-        return SharedData.shared.eventManager.getEvents()
+    public static func getEvents() -> [EventDTO] {
+        return SharedData.shared.eventManager.getEvents().map {$0.toDTO()}
     }
 }