//
//  AppDelegate.swift
//  GuestChat
//
//  Created by Bruno Resende on 17/11/2017.
//  Copyright © 2017 Loopon AB
//  API Documentation: https://api.loopon.com/public
//  Contact us at support@loopon.com
//  
//  Redistribution and use in source and binary forms, with or without modification, are permitted provided that the 
//  following conditions are met:
//  
//  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following
//  disclaimer.
//  
//  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the 
//  following disclaimer in the documentation and/or other materials provided with the distribution.
//  
//  3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
//  products derived from this software without specific prior written permission.
//  
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
//  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
//  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
//  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
//  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
//  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
//  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//

import UIKit
import LooponKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate
{
	var window: UIWindow?
	var hotelBackend = HotelBackend(clientId: Secrets.clientId, secret: Secrets.clientSecret)
	var units: [LooponUnit]? = nil

	static var instance: AppDelegate
	{
		return UIApplication.shared.delegate as! AppDelegate
	}

	func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool
	{
		// Override point for customization after application launch.
		hotelBackend.delegate = self

		return true
	}

	func applicationWillResignActive(_ application: UIApplication) {
		// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
		// Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
	}

	func applicationDidEnterBackground(_ application: UIApplication) {
		// Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
		// If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
	}

	func applicationWillEnterForeground(_ application: UIApplication) {
		// Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
	}

	func applicationDidBecomeActive(_ application: UIApplication) {
		// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
	}

	func applicationWillTerminate(_ application: UIApplication) {
		// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
	}
}

extension AppDelegate: HotelBackendDelegate
{
	func hotelBackedDidAuthorize(_ hotelBackend: HotelBackend)
	{
		do
		{
			try hotelBackend.getUnits
			{
				response in

				switch response
				{
				case .success(let units):
					self.units = units

				case .error(let error, _):
					print("Could not fetch units! \(error)")
				}
			}
		}
		catch
		{
			print("Could not fetch units! \(error)")
		}
	}
}

