// Apple-only learning file: iOS 17+ target with a suitable Xcode SDK.
// Not compiled or run in this Windows/Linux review.
import SwiftUI
import StoreKit


struct DemoView: View {
    @State private var notice = "No entitlement check"
    var body: some View {
        VStack(spacing: 20) {
            Button("Restore and inspect sandbox entitlements") {
                Task {
                    do {
                        try await AppStore.sync()
                        var entitled = false
                        for await result in StoreKit.Transaction.currentEntitlements {
                            switch result {
                            case let .verified(transaction):
                                if transaction.productID == "com.example.workshop.demo", transaction.revocationDate == nil { entitled = true }
                            case .unverified: continue
                            }
                        }
                        notice = entitled ? "Verified configured demo entitlement" : "No verified demo entitlement"
                    } catch { notice = "Restore/check failed" }
                }
            }
            Text(notice)
            Text("No purchase is initiated by this source.").font(.caption)
        }.padding()
    }
}

@main
struct WorkshopDemoApp: App {
    var body: some Scene { WindowGroup { DemoView() } }
}