From 170800b53356f63fed1322ff3f463a7ff8f91604 Mon Sep 17 00:00:00 2001
From: clarknt <24315769+clarknt@users.noreply.github.com>
Date: Tue, 19 Nov 2019 20:31:31 -0500
Subject: [PATCH] Add iOS 12 backwards compatibility

---
 .../Coordinators.xcodeproj/project.pbxproj    |  2 ++
 .../Coordinators/AppDelegate.swift            | 24 +++++++++++++++++--
 .../Coordinators/SceneDelegate.swift          |  1 +
 README.md                                     |  2 +-
 4 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/01-Coordinators/Coordinators.xcodeproj/project.pbxproj b/01-Coordinators/Coordinators.xcodeproj/project.pbxproj
index d09dc79..2419274 100644
--- a/01-Coordinators/Coordinators.xcodeproj/project.pbxproj
+++ b/01-Coordinators/Coordinators.xcodeproj/project.pbxproj
@@ -322,6 +322,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_STYLE = Automatic;
 				INFOPLIST_FILE = Coordinators/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.2;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -339,6 +340,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_STYLE = Automatic;
 				INFOPLIST_FILE = Coordinators/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.2;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
diff --git a/01-Coordinators/Coordinators/AppDelegate.swift b/01-Coordinators/Coordinators/AppDelegate.swift
index 3bb2ec3..295d651 100644
--- a/01-Coordinators/Coordinators/AppDelegate.swift
+++ b/01-Coordinators/Coordinators/AppDelegate.swift
@@ -10,22 +10,42 @@ import UIKit
 
 @UIApplicationMain
 class AppDelegate: UIResponder, UIApplicationDelegate {
-
-
+    
+    var window: UIWindow?
+    var coordinator: MainCoordinator?
 
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
         // Override point for customization after application launch.
+
+        if #available(iOS 13, *) { } else {
+            // create the main navigation controller to be used for our app
+            let navController = UINavigationController()
+
+            // send that into our coordinator so that it can display view controllers
+            coordinator = MainCoordinator(navigationController: navController)
+
+            // tell the coordinator to take over control
+            coordinator?.start()
+
+            // create a basic UIWindow and activate it
+            window = UIWindow(frame: UIScreen.main.bounds)
+            window?.rootViewController = navController
+            window?.makeKeyAndVisible()
+        }
+
         return true
     }
 
     // MARK: UISceneSession Lifecycle
 
+    @available(iOS 13.0, *)
     func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
         // Called when a new scene session is being created.
         // Use this method to select a configuration to create the new scene with.
         return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
     }
 
+    @available(iOS 13.0, *)
     func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
         // Called when the user discards a scene session.
         // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
diff --git a/01-Coordinators/Coordinators/SceneDelegate.swift b/01-Coordinators/Coordinators/SceneDelegate.swift
index 849decc..5b8b487 100644
--- a/01-Coordinators/Coordinators/SceneDelegate.swift
+++ b/01-Coordinators/Coordinators/SceneDelegate.swift
@@ -8,6 +8,7 @@
 
 import UIKit
 
+@available(iOS 13.0, *)
 class SceneDelegate: UIResponder, UIWindowSceneDelegate {
 
     var window: UIWindow?
diff --git a/README.md b/README.md
index 08e23ad..11451b4 100644
--- a/README.md
+++ b/README.md
@@ -4,4 +4,4 @@ Template implementation of [Soroush Khanlou](http://khanlou.com)'s Coordinator d
 - [How to use the coordinator pattern in iOS apps](https://www.hackingwithswift.com/articles/71/how-to-use-the-coordinator-pattern-in-ios-apps)
 - [Advanced coordinators in iOS](https://www.hackingwithswift.com/articles/175/advanced-coordinator-pattern-tutorial-ios)
 
-Requirements: iOS 13 and XCode 11.
+Compatibility tested with XCode 11, iOS 12 and iOS 13.