InAppMessagingManager.swift

extension InAppMessagingManager: InAppMessagingDisplay {
    func displayMessage(_ messageForDisplay: InAppMessagingDisplayMessage, displayDelegate: InAppMessagingDisplayDelegate) {
        switch messageForDisplay.type {
        case .banner:
            guard let message = messageForDisplay as? InAppMessagingBannerDisplay else {
                displayDelegate.displayError?(for: messageForDisplay, error: InAppMessagingErrors.decodeInAppMessageError)
                return
            }
            DispatchQueue.main.async {
                self.showBanner(message: message, displayDelegate: displayDelegate)
            }
            return
        case .modal:
            guard let message = messageForDisplay as? InAppMessagingModalDisplay else {
                displayDelegate.displayError?(for: messageForDisplay, error: InAppMessagingErrors.decodeInAppMessageError)
                return
            }
            DispatchQueue.main.async {
                self.showModal(message: message, displayDelegate: displayDelegate)
            }
            return
        case .imageOnly:
            guard let message = messageForDisplay as? InAppMessagingImageOnlyDisplay else {
                displayDelegate.displayError?(for: messageForDisplay, error: InAppMessagingErrors.decodeInAppMessageError)
                return
            }
            DispatchQueue.main.async {
                self.showImage(message: message, displayDelegate: displayDelegate)
            }
            return
        case .card:
            guard let message = messageForDisplay as? InAppMessagingCardDisplay else {
                displayDelegate.displayError?(for: messageForDisplay, error: InAppMessagingErrors.decodeInAppMessageError)
                return
            }
            DispatchQueue.main.async {
                self.showCard(message: message, displayDelegate: displayDelegate)
            }
            return
        @unknown default:
            // TODO
            displayDelegate.messageDismissed?(messageForDisplay, dismissType: .typeAuto)
            return
        }
    }