/*

See LICENSE.txt for this sample’s licensing information.

Abstract:

The application delegate class that starts TVML.

*/

import UIKit

import TVMLKit

@UIApplicationMain

class AppDelegate: UIResponder, UIApplicationDelegate, TVApplicationControllerDelegate {

    // MARK: Properties

    var window: UIWindow?

    var appController: TVApplicationController?

    /// - Tag: tvBaseURL

    static let tvBaseURL = "http://127.0.0.1:9001/"

    static let tvBootURL = "\(AppDelegate.tvBaseURL)js/application.js"

    // MARK: UIApplication Overrides

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = [:]) -> Bool {

        // Override point for customization after application launch.

        window = UIWindow(frame: UIScreen.main.bounds)

        /*

            Create the TVApplicationControllerContext for this application

            and set the properties that will be passed to the `App.onLaunch` function

            in JavaScript.

        */

        let appControllerContext = TVApplicationControllerContext()

        /*

            The JavaScript URL is used to create the JavaScript context for your

            TVMLKit application. Although it is possible to separate your JavaScript

            into separate files, to help reduce the launch time of your application

            we recommend creating minified and compressed version of this resource.

            This will allow for the resource to be retrieved and UI presented to

            the user quickly.

        */

        if let javaScriptURL = URL(string: AppDelegate.tvBootURL) {

            appControllerContext.javaScriptApplicationURL = javaScriptURL

        }

        appControllerContext.launchOptions = ["baseURL": AppDelegate.tvBaseURL]

        for (key, value) in launchOptions ?? [:] {

            appControllerContext.launchOptions[key.rawValue] = value

        }

        appController = TVApplicationController(context: appControllerContext, window: window, delegate: self)

        return true

    }

    // MARK: TVApplicationControllerDelegate

    func appController(_ appController: TVApplicationController, didFail error: Error) {

        print("\(#function) invoked with error: \(error)")

        let title = "Error Launching Application"

        let message = error.localizedDescription

        let alertController = UIAlertController(title: title, message: message, preferredStyle: .alert)

        self.appController?.navigationController.present(alertController, animated: true, completion: nil)

    }

}