How to Accept PayPal Payments

val configuration = Configuration(
    initData = InitData(version = payload.version, data = payload.data),
    option = Options(
        redirectSessionLifecycle = RedirectSessionLifecycle(
            onSessionExpired = {
                // Fetch a fresh init payload from your backend after cancel/timeout
                val refreshed = fetchInitPayloadFromBackend()
                InitData(version = refreshed.version, data = refreshed.data)
            }
        )
    )
)
val session = Payrails.createSession(configuration)

val payPalButton = Payrails.createPayPalButton(
    style = PayPalButtonStyle(height = 48.dp)
)

payPalButton.delegate = object : PayrailsPayPalButtonDelegate {
    override fun onPaymentButtonClicked(button: PayPalButton) {
        // Payment is starting — optionally show a loading overlay
    }

    override fun onAuthorizeSuccess(button: PayPalButton) {
        navigateToConfirmation()
    }

    override fun onAuthorizeFailed(button: PayPalButton) {
        showPaymentFailedMessage()
    }

    override fun onPaymentSessionExpired(button: PayPalButton) {
        // The session is no longer usable after the user cancelled or a timeout occurred.
        // Fetch a new init payload from your backend and reinitialize the session.
        val refreshed = fetchInitPayloadFromBackend()
        Payrails.createSession(
            Configuration(initData = InitData(version = refreshed.version, data = refreshed.data))
        )
    }

    override fun onCancelled(button: PayPalButton) {
        // Optional — fires before onPaymentSessionExpired when the user explicitly cancels
        showCancelMessage()
    }
}

@Composable
fun CheckoutScreen() {
    // ...
    payPalButton.Render(modifier = Modifier.fillMaxWidth().padding(horizontal = 16.dp))
}

payPalButton.saveInstrument = true
payPalButton.pay()  // or let the user tap the rendered button

val storedPayPalAccounts = session.getStoredInstruments(forType = PaymentMethod.payPal)

val selectedInstrument = storedPayPalAccounts.first()
payPalButton.pay(selectedInstrument.id)