Add support for FirebaseAnalytics StoreKit2

Author: denysdanyliukboosters

Sources/PandaSDK/AppStoreService.swift

@@ -15,6 +15,7 @@ final class AppStoreService: NSObject {
     private var purchasing: Bool = false
 
     var onVerify: (() async -> Void)?
+    var onTransaction: ((StoreKit.Transaction) -> Void)?
 
     init(verificationClient: VerificationClient) {
         self.verificationClient = verificationClient
@@ -87,6 +88,7 @@ final class AppStoreService: NSObject {
         switch result {
         case let .success(verification):
             let transaction = try verification.payloadValue
+            onTransaction?(transaction)
             await transaction.finish()
             return .success(transaction, product)
 

Sources/PandaSDK/ConfiguredPanda/ConfiguredPanda+WebViewModel.swift

@@ -181,6 +181,10 @@ extension Panda {
         }
     }
 
+    func onAppStoreServiceTransaction(transaction: StoreKit.Transaction) {
+        send(event: .trackTransaction(transaction: transaction))
+    }
+    
     @MainActor
     func onError(error: Error) {
         viewControllers.forEach { $0.value?.onFinishLoad() }

Sources/PandaSDK/ConfiguredPanda/ConfiguredPanda.swift

@@ -72,6 +72,7 @@ final public class Panda: PandaProtocol, ObserverSupport {
 
     func configureAppStoreService() {
         appStoreService.onVerify = onAppStoreServiceVerify
+        appStoreService.onTransaction = onAppStoreServiceTransaction
         appStoreService.startTask()
     }
 

Sources/PandaSDK/PandaAnalytics.swift

@@ -34,6 +34,7 @@ public enum PandaEvent {
     case onStartLoading
     case onFinishLoading
     case updateStatuses
+    case trackTransaction(transaction: StoreKit.Transaction)
 }
 
 public protocol PandaAnalyticsObserver: AnyObject {