iOS

import DodoCheckout

// showSuccess(_:), showFailure(), showExpired(), and reconcileAbandonedSession()
// are your own functions. See Abandoned Sessions for what to reconcile.
let result = try await DodoCheckout.start(
    checkoutUrl: checkoutUrl,   // from your backend's checkout session
    returnUrl: URL(string: "myapp://checkout/return")!,
    onEvent: { event in print(event.name) }  // logging only
)

switch result.status {
case .succeeded: showSuccess(result.paymentId)
case .failed:    showFailure()
case .cancelled: await reconcileAbandonedSession()  // outcome unknown, not a failure
case .pending:   await reconcileAbandonedSession()
case .expired:   showExpired()
}

let result = try await DodoCheckout.start(
    checkoutUrl: checkoutUrl,
    returnUrl: URL(string: "myapp://checkout/return")!,
    customization: BrowserCustomization(
        dismissButtonStyle: .close,
        presentationStyle: .fullScreen,
        colorScheme: .dark
    )
)

import DodoCheckout

if let abandoned = DodoCheckout.getAbandonedSession() {
    // Ask your backend for the outcome of abandoned.sessionId, and show it.
    // Clear the record only after the outcome is final:
    DodoCheckout.clearAbandonedSession()
}