From 85d9bc917c03e762c78f4dffc505e1f142489fba Mon Sep 17 00:00:00 2001
From: Andrew Walz <andrewjwalz@gmail.com>
Date: Wed, 30 Aug 2017 21:17:54 -0600
Subject: [PATCH] Added delegate for failed configuration

---
 .../DemoSwiftyCam/ViewController.swift          | 10 ++++++++++
 Source/SwiftyCamViewController.swift            | 17 +++++++----------
 Source/SwiftyCamViewControllerDelegate.swift    | 13 +++++++++++++
 3 files changed, 30 insertions(+), 10 deletions(-)

diff --git a/DemoSwiftyCam/DemoSwiftyCam/ViewController.swift b/DemoSwiftyCam/DemoSwiftyCam/ViewController.swift
index 8d3e90f..17c6a5c 100644
--- a/DemoSwiftyCam/DemoSwiftyCam/ViewController.swift
+++ b/DemoSwiftyCam/DemoSwiftyCam/ViewController.swift
@@ -87,12 +87,22 @@ class ViewController: SwiftyCamViewController, SwiftyCamViewControllerDelegate {
 			})
 		})
 	}
+    
+    func swiftyCamDidFailToConfigure(_ swiftyCam: SwiftyCamViewController) {
+        let message = NSLocalizedString("Unable to capture media", comment: "Alert message when something goes wrong during capture session configuration")
+        let alertController = UIAlertController(title: "AVCam", message: message, preferredStyle: .alert)
+        alertController.addAction(UIAlertAction(title: NSLocalizedString("OK", comment: "Alert OK button"), style: .cancel, handler: nil))
+        present(alertController, animated: true, completion: nil)
+    }
 
 	func swiftyCam(_ swiftyCam: SwiftyCamViewController, didChangeZoomLevel zoom: CGFloat) {
+        print("Zoom level did change. Level: \(zoom)")
 		print(zoom)
 	}
 
 	func swiftyCam(_ swiftyCam: SwiftyCamViewController, didSwitchCameras camera: SwiftyCamViewController.CameraSelection) {
+        print("Camera did change to \(camera.rawValue)")
+
 		print(camera)
 	}
     
diff --git a/Source/SwiftyCamViewController.swift b/Source/SwiftyCamViewController.swift
index 2a86dff..332e0c4 100644
--- a/Source/SwiftyCamViewController.swift
+++ b/Source/SwiftyCamViewController.swift
@@ -27,13 +27,13 @@ open class SwiftyCamViewController: UIViewController {
 
 	/// Enumeration for Camera Selection
 
-	public enum CameraSelection {
+    public enum CameraSelection: String {
 
 		/// Camera on the back of the device
-		case rear
+		case rear = "rear"
 
 		/// Camera on the front of the device
-		case front
+		case front = "front"
 	}
 
 	/// Enumeration for video quality of the capture session. Corresponds to a AVCaptureSessionPreset
@@ -271,7 +271,7 @@ open class SwiftyCamViewController: UIViewController {
 
 		// Test authorization status for Camera and Micophone
 
-		switch AVCaptureDevice.authorizationStatus(forMediaType: AVMediaTypeVideo){
+		switch AVCaptureDevice.authorizationStatus(forMediaType: AVMediaTypeVideo) {
 		case .authorized:
 
 			// already authorized
@@ -390,12 +390,9 @@ open class SwiftyCamViewController: UIViewController {
 				self.promptToAppSettings()
 			case .configurationFailed:
 				// Unknown Error
-				DispatchQueue.main.async(execute: { [unowned self] in
-					let message = NSLocalizedString("Unable to capture media", comment: "Alert message when something goes wrong during capture session configuration")
-					let alertController = UIAlertController(title: "AVCam", message: message, preferredStyle: .alert)
-					alertController.addAction(UIAlertAction(title: NSLocalizedString("OK", comment: "Alert OK button"), style: .cancel, handler: nil))
-					self.present(alertController, animated: true, completion: nil)
-				})
+                DispatchQueue.main.async {
+                    self.cameraDelegate?.swiftyCamDidFailToConfigure(self)
+                }
 			}
 		}
 	}
diff --git a/Source/SwiftyCamViewControllerDelegate.swift b/Source/SwiftyCamViewControllerDelegate.swift
index 8102f06..764b2c7 100644
--- a/Source/SwiftyCamViewControllerDelegate.swift
+++ b/Source/SwiftyCamViewControllerDelegate.swift
@@ -15,6 +15,7 @@
 
 
 import UIKit
+import AVFoundation
 
 // MARK: Public Protocol Declaration
 
@@ -95,6 +96,14 @@ public protocol SwiftyCamViewControllerDelegate: class {
      */
     
     func swiftyCam(_ swiftyCam: SwiftyCamViewController, didChangeZoomLevel zoom: CGFloat)
+    
+    /**
+     SwiftyCamViewControllerDelegate function called when when SwiftyCamViewController fails to confiture the session.
+     
+     - Parameter swiftyCam: Current SwiftyCamViewController
+     */
+    
+    func swiftyCamDidFailToConfigure(_ swiftyCam: SwiftyCamViewController)
 }
 
 public extension SwiftyCamViewControllerDelegate {
@@ -135,6 +144,10 @@ public extension SwiftyCamViewControllerDelegate {
     func swiftyCam(_ swiftyCam: SwiftyCamViewController, didChangeZoomLevel zoom: CGFloat) {
         // Optional
     }
+    
+    func swiftyCamDidFailToConfigure(_ swiftyCam: SwiftyCamViewController) {
+        // Optional
+    }
 }