iOS Paywalls

AppDNA.presentPaywall(
    id: "premium_paywall",
    from: viewController,
    context: PaywallContext(placement: "settings"),
    delegate: self
)

// Present paywall by placement (audience rules determine which paywall to show)
AppDNA.presentPaywall(placement: "premium_upgrade", from: viewController)

let paywall = AppDNA.paywall

let context = PaywallContext(
    placement: "settings",
    experiment: "paywall_test",
    variant: "b"
)

protocol AppDNAPaywallDelegate {
    func onPaywallPresented(paywallId: String)
    func onPaywallAction(paywallId: String, action: PaywallAction)
    func onPaywallPurchaseStarted(paywallId: String, productId: String)
    func onPaywallPurchaseCompleted(paywallId: String, productId: String, transaction: TransactionInfo)
    func onPaywallPurchaseFailed(paywallId: String, error: Error)
    func onPaywallDismissed(paywallId: String)
    func onPromoCodeSubmit(paywallId: String, code: String, completion: @escaping (Bool) -> Void)
    func onPostPurchaseDeepLink(paywallId: String, url: URL)
    func onPostPurchaseNextStep(paywallId: String)
}

class PaywallHandler: AppDNAPaywallDelegate {
    func onPaywallPresented(paywallId: String) {
        print("Paywall shown: \(paywallId)")
    }

    func onPaywallAction(paywallId: String, action: PaywallAction) {
        switch action {
        case .ctaTapped:
            print("CTA tapped")
        case .featureSelected:
            print("Feature selected")
        case .planChanged:
            print("Plan changed")
        case .linkTapped:
            print("Link tapped")
        case .custom:
            print("Custom action")
        }
    }

    func onPaywallPurchaseStarted(paywallId: String, productId: String) {
        print("Purchase started: \(productId)")
    }

    func onPaywallPurchaseCompleted(
        paywallId: String,
        productId: String,
        transaction: TransactionInfo
    ) {
        print("Purchased \(productId) — txn: \(transaction.transactionId)")
        // Paywall auto-dismisses on successful purchase
    }

    func onPaywallPurchaseFailed(paywallId: String, error: Error) {
        print("Purchase failed: \(error.localizedDescription)")
        // Paywall stays visible so the user can retry
    }

    func onPaywallDismissed(paywallId: String) {
        print("Paywall dismissed")
    }
}

func onPromoCodeSubmit(paywallId: String, code: String, completion: @escaping (Bool) -> Void) {
    // Validate the code and call completion(true) for valid, completion(false) for invalid
    validateCode(code) { isValid in
        completion(isValid)
    }
}

import AppDNASDK

class PremiumGate: AppDNAPaywallDelegate {
    private weak var presenter: UIViewController?

    init(presenter: UIViewController) {
        self.presenter = presenter
        AppDNA.paywall.setDelegate(self)
    }

    func showPremiumPaywall(placement: String) {
        guard let vc = presenter else { return }

        AppDNA.presentPaywall(
            id: "premium_paywall",
            from: vc,
            context: PaywallContext(placement: placement),
            delegate: self
        )
    }

    // MARK: - AppDNAPaywallDelegate

    func onPaywallPresented(paywallId: String) {
        // Track additional analytics if needed
    }

    func onPaywallAction(paywallId: String, action: PaywallAction) {
        // Handle custom actions
    }

    func onPaywallPurchaseStarted(paywallId: String, productId: String) {
        // Show loading state if desired
    }

    func onPaywallPurchaseCompleted(
        paywallId: String,
        productId: String,
        transaction: TransactionInfo
    ) {
        // Unlock premium features
        unlockPremium()
    }

    func onPaywallPurchaseFailed(paywallId: String, error: Error) {
        // Error is shown in the paywall UI automatically
    }

    func onPaywallDismissed(paywallId: String) {
        // User closed without purchasing
    }
}