2

keyBoard/Class/Pay/StoreKit2Manager/KBStoreKitBridge.swift

@@ -56,7 +56,7 @@ final class KBStoreKitBridge: NSObject, StoreKitDelegate {
                     self.verifySignedPayload(payload, completion: completion)
                 } else {
                     await MainActor.run {
-                        completion(false, "Unable to obtain transaction payload.")
+                        completion(false, self.failureMessage(for: productId))
                     }
                 }
             } catch {
@@ -119,4 +119,18 @@ final class KBStoreKitBridge: NSObject, StoreKitDelegate {
     private func fetchPayload(for productId: String) async -> String? {
         return manager.consumeRecentPayload(for: productId)
     }
+    
+    @MainActor
+    private func failureMessage(for productId: String) -> String {
+        switch manager.currentState {
+        case .purchaseCancelled(let id) where id == productId:
+            return "Purchase cancelled."
+        case .purchasePending(let id) where id == productId:
+            return "Purchase pending approval."
+        case .purchaseFailed(let id, let error) where id == productId:
+            return error.localizedDescription
+        default:
+            return "Unable to obtain transaction payload."
+        }
+    }
 }