Implement ScannerViewController and new Contact creation.

day-079/Projects/QRConnections/QRConnections.xcodeproj/project.pbxproj

@@ -40,6 +40,11 @@
 		F3203BEF23CC985100265268 /* UserQRCodeFormView.swift in Sources */ = {isa = PBXBuildFile; fileRef = F3203BEE23CC985100265268 /* UserQRCodeFormView.swift */; };
 		F3203BF123CC9B1600265268 /* UserQRCodeFormView+ViewModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = F3203BF023CC9B1600265268 /* UserQRCodeFormView+ViewModel.swift */; };
 		F3203BF423CD140100265268 /* ContactQRCodeRepresentable.swift in Sources */ = {isa = PBXBuildFile; fileRef = F3203BF323CD140100265268 /* ContactQRCodeRepresentable.swift */; };
+		F3203BFB23CD430500265268 /* QRCodeScannerView+Coordinator.swift in Sources */ = {isa = PBXBuildFile; fileRef = F3203BF923CD430500265268 /* QRCodeScannerView+Coordinator.swift */; };
+		F3203BFC23CD430500265268 /* QRCodeScannerView.swift in Sources */ = {isa = PBXBuildFile; fileRef = F3203BFA23CD430500265268 /* QRCodeScannerView.swift */; };
+		F3203BFF23CDF6D100265268 /* ScannerViewControlller.swift in Sources */ = {isa = PBXBuildFile; fileRef = F3203BFE23CDF6D100265268 /* ScannerViewControlller.swift */; };
+		F326140823CE3928009EC215 /* ContactsState.swift in Sources */ = {isa = PBXBuildFile; fileRef = F326140723CE3928009EC215 /* ContactsState.swift */; };
+		F326140A23CE689A009EC215 /* Contact+InitHelpers.swift in Sources */ = {isa = PBXBuildFile; fileRef = F326140923CE689A009EC215 /* Contact+InitHelpers.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -75,6 +80,11 @@
 		F3203BEE23CC985100265268 /* UserQRCodeFormView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UserQRCodeFormView.swift; sourceTree = "<group>"; };
 		F3203BF023CC9B1600265268 /* UserQRCodeFormView+ViewModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UserQRCodeFormView+ViewModel.swift"; sourceTree = "<group>"; };
 		F3203BF323CD140100265268 /* ContactQRCodeRepresentable.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ContactQRCodeRepresentable.swift; sourceTree = "<group>"; };
+		F3203BF923CD430500265268 /* QRCodeScannerView+Coordinator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "QRCodeScannerView+Coordinator.swift"; sourceTree = "<group>"; };
+		F3203BFA23CD430500265268 /* QRCodeScannerView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = QRCodeScannerView.swift; sourceTree = "<group>"; };
+		F3203BFE23CDF6D100265268 /* ScannerViewControlller.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ScannerViewControlller.swift; sourceTree = "<group>"; };
+		F326140723CE3928009EC215 /* ContactsState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ContactsState.swift; sourceTree = "<group>"; };
+		F326140923CE689A009EC215 /* Contact+InitHelpers.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Contact+InitHelpers.swift"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -134,10 +144,10 @@
 		F3203B9823C760BF00265268 /* App */ = {
 			isa = PBXGroup;
 			children = (
-				F3203B9D23C7610400265268 /* LaunchScreen.storyboard */,
-				F3203B8323C7609500265268 /* SceneDelegate.swift */,
 				F3203B8123C7609500265268 /* AppDelegate.swift */,
 				F3203BA923C82CB100265268 /* CurrentApplication.swift */,
+				F3203B8323C7609500265268 /* SceneDelegate.swift */,
+				F3203B9D23C7610400265268 /* LaunchScreen.storyboard */,
 			);
 			path = App;
 			sourceTree = "<group>";
@@ -145,9 +155,9 @@
 		F3203B9923C760C300265268 /* Scenes */ = {
 			isa = PBXGroup;
 			children = (
+				F3203BB023C8345400265268 /* RootView.swift */,
 				F3203BAD23C8339400265268 /* Collected Contacts */,
 				F3203BAC23C8337F00265268 /* User QR Code */,
-				F3203BB023C8345400265268 /* RootView.swift */,
 			);
 			path = Scenes;
 			sourceTree = "<group>";
@@ -155,10 +165,10 @@
 		F3203B9A23C760C700265268 /* Data */ = {
 			isa = PBXGroup;
 			children = (
-				F3203BAB23C831E300265268 /* Models */,
-				F3203BA823C82C8F00265268 /* State */,
-				F3203B8523C7609500265268 /* QRConnections.xcdatamodeld */,
 				F3203BA623C7636600265268 /* CoreDataManager+Utils.swift */,
+				F3203BAB23C831E300265268 /* Models */,
+				F3203B8523C7609500265268 /* QRConnections.xcdatamodeld */,
+				F3203BA823C82C8F00265268 /* State */,
 			);
 			path = Data;
 			sourceTree = "<group>";
@@ -166,8 +176,9 @@
 		F3203B9B23C760C900265268 /* Reusables */ = {
 			isa = PBXGroup;
 			children = (
-				F3203BF223CD13F300265268 /* Protocols */,
+				F3203BF823CD42F400265268 /* UIKit Wrappers */,
 				F3203BD023C9DFDF00265268 /* ImageFilterService.swift */,
+				F3203BF223CD13F300265268 /* Protocols */,
 			);
 			path = Reusables;
 			sourceTree = "<group>";
@@ -185,6 +196,7 @@
 			children = (
 				F3203BD223C9F20C00265268 /* AppState.swift */,
 				F3203BD423C9F3E900265268 /* UserProfileState.swift */,
+				F326140723CE3928009EC215 /* ContactsState.swift */,
 			);
 			path = State;
 			sourceTree = "<group>";
@@ -200,11 +212,11 @@
 		F3203BAC23C8337F00265268 /* User QR Code */ = {
 			isa = PBXGroup;
 			children = (
-				F3203BCE23C9DAE000265268 /* UserQRCodeView.swift */,
 				F3203BEA23CC977000265268 /* UserQRCodeContainerView.swift */,
-				F3203BEE23CC985100265268 /* UserQRCodeFormView.swift */,
 				F3203BEC23CC97DC00265268 /* UserQRCodeContainerView+ViewModel.swift */,
+				F3203BEE23CC985100265268 /* UserQRCodeFormView.swift */,
 				F3203BF023CC9B1600265268 /* UserQRCodeFormView+ViewModel.swift */,
+				F3203BCE23C9DAE000265268 /* UserQRCodeView.swift */,
 			);
 			path = "User QR Code";
 			sourceTree = "<group>";
@@ -213,8 +225,8 @@
 			isa = PBXGroup;
 			children = (
 				F3203BB223C8368800265268 /* ContactsContainerView.swift */,
-				F3203BB623C844F100265268 /* ContactsListView.swift */,
 				F3203BB423C841A700265268 /* ContactsContainerView+ViewModel.swift */,
+				F3203BB623C844F100265268 /* ContactsListView.swift */,
 			);
 			path = "Collected Contacts";
 			sourceTree = "<group>";
@@ -225,6 +237,7 @@
 				F3203BB823C8467000265268 /* Contact+FilterState.swift */,
 				F3203BBB23C8579400265268 /* Contact+CoreDataClass.swift */,
 				F3203BBC23C8579400265268 /* Contact+CoreDataProperties.swift */,
+				F326140923CE689A009EC215 /* Contact+InitHelpers.swift */,
 				F3203BC123C8588E00265268 /* Contact+FetchHelpers.swift */,
 				F3203BBF23C8584500265268 /* Contact+Status.swift */,
 			);
@@ -249,6 +262,24 @@
 			path = Protocols;
 			sourceTree = "<group>";
 		};
+		F3203BF823CD42F400265268 /* UIKit Wrappers */ = {
+			isa = PBXGroup;
+			children = (
+				F3203BFD23CDF68D00265268 /* Scanner View */,
+			);
+			path = "UIKit Wrappers";
+			sourceTree = "<group>";
+		};
+		F3203BFD23CDF68D00265268 /* Scanner View */ = {
+			isa = PBXGroup;
+			children = (
+				F3203BF923CD430500265268 /* QRCodeScannerView+Coordinator.swift */,
+				F3203BFA23CD430500265268 /* QRCodeScannerView.swift */,
+				F3203BFE23CDF6D100265268 /* ScannerViewControlller.swift */,
+			);
+			path = "Scanner View";
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -334,11 +365,13 @@
 				F3203BB323C8368800265268 /* ContactsContainerView.swift in Sources */,
 				F3203BC923C871D300265268 /* PreviewDevice+Utils.swift in Sources */,
 				F3203BB923C8467000265268 /* Contact+FilterState.swift in Sources */,
+				F3203BFB23CD430500265268 /* QRCodeScannerView+Coordinator.swift in Sources */,
 				F3203BC223C8588F00265268 /* Contact+FetchHelpers.swift in Sources */,
 				F3203BC023C8584500265268 /* Contact+Status.swift in Sources */,
 				F3203BA723C7636600265268 /* CoreDataManager+Utils.swift in Sources */,
 				F3203BCF23C9DAE100265268 /* UserQRCodeView.swift in Sources */,
 				F3203B8223C7609500265268 /* AppDelegate.swift in Sources */,
+				F326140823CE3928009EC215 /* ContactsState.swift in Sources */,
 				F3203BB123C8345400265268 /* RootView.swift in Sources */,
 				F3203BC723C8717F00265268 /* SampleData+Contacts.swift in Sources */,
 				F3203BD323C9F20C00265268 /* AppState.swift in Sources */,
@@ -346,9 +379,11 @@
 				F3203BB723C844F100265268 /* ContactsListView.swift in Sources */,
 				F3203BED23CC97DC00265268 /* UserQRCodeContainerView+ViewModel.swift in Sources */,
 				F3203BB523C841A700265268 /* ContactsContainerView+ViewModel.swift in Sources */,
+				F326140A23CE689A009EC215 /* Contact+InitHelpers.swift in Sources */,
 				F3203BEB23CC977000265268 /* UserQRCodeContainerView.swift in Sources */,
 				F3203BF123CC9B1600265268 /* UserQRCodeFormView+ViewModel.swift in Sources */,
 				F3203BEF23CC985100265268 /* UserQRCodeFormView.swift in Sources */,
+				F3203BFF23CDF6D100265268 /* ScannerViewControlller.swift in Sources */,
 				F3203BE223CA31EB00265268 /* SampleData+AppStore.swift in Sources */,
 				F3203BD123C9DFDF00265268 /* ImageFilterService.swift in Sources */,
 				F3203B8723C7609500265268 /* QRConnections.xcdatamodeld in Sources */,
@@ -357,6 +392,7 @@
 				F3203BC523C8714700265268 /* SampleData.swift in Sources */,
 				F3203BD523C9F3E900265268 /* UserProfileState.swift in Sources */,
 				F3203B8423C7609500265268 /* SceneDelegate.swift in Sources */,
+				F3203BFC23CD430500265268 /* QRCodeScannerView.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

day-079/Projects/QRConnections/QRConnections.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -15,8 +15,8 @@
         "repositoryURL": "https://github.com/CypherPoet/CypherPoetCoreDataKit.git",
         "state": {
           "branch": null,
-          "revision": "5400fc3983f4174cd36cc79b24b7ef54affecf6b",
+          "revision": "e14a3abf3e679d41c9e0fcc55d3e4d7ccd8ce1b6",
-          "version": "0.0.5"
+          "version": "0.0.6"
         }
       },
       {

day-079/Projects/QRConnections/QRConnections/App/AppDelegate.swift

@@ -9,6 +9,7 @@
 import UIKit
 import CoreData
 
+
 @UIApplicationMain
 class AppDelegate: UIResponder, UIApplicationDelegate {
 

day-079/Projects/QRConnections/QRConnections/Data/Models/Contact/Contact+InitHelpers.swift

@@ -0,0 +1,28 @@
+//
+//  Contact+InitHelpers.swift
+//  QRConnections
+//
+//  Created by CypherPoet on 1/14/20.
+// ✌️
+//
+
+import Foundation
+import CoreData
+
+
+extension Contact {
+    
+    static func make(
+        fromName name: String,
+        andStatus status: Status = .uncontacted,
+        using context: NSManagedObjectContext
+    ) -> Contact {
+        let contact = Contact(context: context)
+        
+        contact.name = name
+        contact.uuid = UUID()
+        contact.status = status
+        
+        return contact
+    }
+}

day-079/Projects/QRConnections/QRConnections/Data/State/AppState.swift

@@ -12,6 +12,7 @@ import CypherPoetSwiftUIKit_DataFlowUtils
 
 
 struct AppState {
+    var contactsState = ContactsState()
     var userProfileState = UserProfileState()
 }
 
@@ -22,6 +23,7 @@ struct AppState {
 
 
 enum AppAction {
+    case contacts(_ action: ContactsAction)
     case userProfile(_ action: UserProfileAction)
 }
 
@@ -31,6 +33,8 @@ let appReducer = Reducer<AppState, AppAction> { appState, action in
     switch action {
     case .userProfile(let action):
         userProfileReducer.reduce(&appState.userProfileState, action)
+    case .contacts(let action):
+        contactsReducer.reduce(&appState.contactsState, action)
     }
 }
 

day-079/Projects/QRConnections/QRConnections/Data/State/ContactsState.swift

@@ -0,0 +1,63 @@
+//
+//  ContactsState.swift
+//  QRConnections
+//
+//  Created by CypherPoet on 1/14/20.
+// ✌️
+//
+
+
+import Foundation
+import Combine
+import CypherPoetSwiftUIKit_DataFlowUtils
+
+
+
+struct ContactsState {
+    var saveErrorMessage: String?
+}
+
+
+
+enum ContactsSideEffect: SideEffect {
+    case save(_ contact: Contact)
+
+
+    func mapToAction() -> AnyPublisher<AppAction, Never> {
+        switch self {
+        case .save(let contact):
+            guard let context = contact.managedObjectContext else {
+                return Just(AppAction.contacts(.saveErrorMessageSet("No managed object context found")))
+                    .eraseToAnyPublisher()
+            }
+            
+            return Just(context)
+                .flatMap { context in
+                    CurrentApp.coreDataManager.save(context)
+                        .map { AppAction.contacts(.saveErrorMessageSet(nil)) }
+                        .catch { error in
+                            Just(AppAction.contacts(.saveErrorMessageSet(error.localizedDescription)))
+                        }
+                }
+                .eraseToAnyPublisher()
+        }
+    }
+}
+
+
+
+enum ContactsAction {
+    case saveErrorMessageSet(String?)
+}
+
+
+// MARK: - Reducer
+let contactsReducer: Reducer<ContactsState, ContactsAction> = Reducer(
+    reduce: { state, action in
+        switch action {
+        case .saveErrorMessageSet(let message):
+            state.saveErrorMessage = message
+        }
+    }
+)
+

day-079/Projects/QRConnections/QRConnections/Info.plist

@@ -49,6 +49,8 @@
 		<string>UIInterfaceOrientationLandscapeLeft</string>
 		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
+	<key>NSCameraUsageDescription</key>
+	<string>This app would like to scan QR codes in order to add to your collection of contacts.</string>
 	<key>UISupportedInterfaceOrientations~ipad</key>
 	<array>
 		<string>UIInterfaceOrientationPortrait</string>

day-079/Projects/QRConnections/QRConnections/Reusables/UIKit Wrappers/Scanner View/QRCodeScannerView+Coordinator.swift

@@ -0,0 +1,60 @@
+//
+//  QRCodeScannerView+Coordinator.swift
+//  QRConnections
+//
+//  Created by CypherPoet on 1/13/20.
+// ✌️
+//
+
+import Foundation
+import UIKit
+import AVFoundation
+
+
+// MARK: - Coordinator
+extension QRCodeScannerView {
+
+    class Coordinator: NSObject {
+        let onScanCompleted: QRCodeScannerView.CompletionHandler
+        let simulatedData: String
+        
+        init(
+            simulatedData: String,
+            onScanCompleted: @escaping QRCodeScannerView.CompletionHandler
+        ) {
+            self.simulatedData = simulatedData
+            self.onScanCompleted = onScanCompleted
+        }
+    }
+}
+
+
+// MARK: - ScannerViewControllerCaptureSessionDelegate
+extension QRCodeScannerView.Coordinator: ScannerViewControllerCaptureSessionDelegate {
+
+    func captureSession(didScan metadataObject: ScannerViewController.CapturedOutput) {
+        #if targetEnvironment(simulator)
+        onScanCompleted(.success(simulatedData))
+        
+        #else
+        
+        guard
+            let readableObject = metadataObject as? AVMetadataMachineReadableCodeObject,
+            let stringValue = readableObject.stringValue else
+        { return }
+        
+        AudioServicesPlaySystemSound(SystemSoundID(kSystemSoundID_Vibrate))
+
+        onScanCompleted(.success(stringValue))
+        
+        #endif
+    }
+    
+    func captureSessionWasUnableToAddInput() {
+        onScanCompleted(.failure(.badInput))
+    }
+    
+    func captureSessionWasUnableToAddOutput() {
+        onScanCompleted(.failure(.badOutput))
+    }
+}

day-079/Projects/QRConnections/QRConnections/Reusables/UIKit Wrappers/Scanner View/QRCodeScannerView.swift

@@ -0,0 +1,70 @@
+//
+//  QRCodeScannerView.swift
+//  QRConnections
+//
+//  Created by CypherPoet on 1/13/20.
+// ✌️
+//
+
+
+import SwiftUI
+import AVFoundation
+
+
+struct QRCodeScannerView {
+    typealias UIViewControllerType = ScannerViewController
+    typealias Completion = Result<String, ScanError>
+    typealias CompletionHandler = ((Completion) -> Void)
+    
+    var codeTypes: [AVMetadataObject.ObjectType] = [.qr]
+    var simulatedData = ""
+    let onScanCompleted: CompletionHandler
+}
+
+
+extension QRCodeScannerView {
+    enum ScanError: Error {
+        case badInput
+        case badOutput
+    }
+}
+
+// MARK: - UIViewControllerRepresentable
+extension QRCodeScannerView: UIViewControllerRepresentable {
+
+    func makeCoordinator() -> Self.Coordinator {
+        Self.Coordinator(
+            simulatedData: simulatedData,
+            onScanCompleted: onScanCompleted
+        )
+    }
+
+
+    func makeUIViewController(
+        context: UIViewControllerRepresentableContext<QRCodeScannerView>
+    ) -> UIViewControllerType {
+        let viewController = ScannerViewController()
+        
+        viewController.codeTypes = codeTypes
+        viewController.captureSessionDelegate = context.coordinator
+        
+        return viewController
+    }
+
+
+    func updateUIViewController(
+        _ uiViewController: UIViewControllerType,
+        context: UIViewControllerRepresentableContext<QRCodeScannerView>
+    ) {
+    }
+}
+
+
+
+// MARK: - Preview
+struct QRCodeScannerView_Previews: PreviewProvider {
+
+    static var previews: some View {
+        QRCodeScannerView(onScanCompleted: { _ in })
+    }
+}

day-079/Projects/QRConnections/QRConnections/Reusables/UIKit Wrappers/Scanner View/ScannerViewControlller.swift

@@ -0,0 +1,171 @@
+//
+//  ScannerViewControlller.swift
+//  QRConnections
+//
+//  Created by CypherPoet on 1/14/20.
+// ✌️
+//
+
+import AVFoundation
+import UIKit
+
+
+protocol ScannerViewControllerCaptureSessionDelegate: class {
+    func captureSession(didScan metadataObject: ScannerViewController.CapturedOutput)
+    func captureSessionWasUnableToAddInput()
+    func captureSessionWasUnableToAddOutput()
+}
+
+
+public final class ScannerViewController: UIViewController {
+    private var captureSession: AVCaptureSession!
+    private var previewLayer: AVCaptureVideoPreviewLayer!
+    
+    var codeTypes: [AVMetadataObject.ObjectType] = [.qr]
+    weak var captureSessionDelegate: ScannerViewControllerCaptureSessionDelegate?
+}
+
+
+extension ScannerViewController {
+    #if targetEnvironment(simulator)
+    typealias CapturedOutput = String
+    #else
+    typealias CapturedOutput = AVMetadataObject
+    #endif
+}
+
+
+
+// MARK: - Computeds
+extension ScannerViewController {
+
+    override public var prefersStatusBarHidden: Bool {
+        return true
+    }
+
+    override public var supportedInterfaceOrientations: UIInterfaceOrientationMask {
+        return .portrait
+    }
+}
+
+
+// MARK: - View Controller Lifecycle
+
+#if targetEnvironment(simulator)
+
+extension ScannerViewController {
+    
+    override public func loadView() {
+        view = UIView()
+        
+        let label = UILabel()
+        
+        label.translatesAutoresizingMaskIntoConstraints = false
+        label.numberOfLines = 0
+        label.text = "You're running in the simulator, which means the camera isn't available. Tap anywhere to send back some simulated data."
+        
+        view.addSubview(label)
+        
+        NSLayoutConstraint.activate([
+            label.leadingAnchor.constraint(equalTo: view.layoutMarginsGuide.leadingAnchor),
+            label.trailingAnchor.constraint(equalTo: view.layoutMarginsGuide.trailingAnchor),
+            label.topAnchor.constraint(equalTo: view.layoutMarginsGuide.topAnchor),
+            label.bottomAnchor.constraint(equalTo: view.layoutMarginsGuide.bottomAnchor)
+        ])
+    }
+
+    
+    override public func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
+        captureSessionDelegate?.captureSession(didScan: "")
+        dismiss(animated: true)
+    }
+}
+    
+
+#else
+
+
+extension ScannerViewController {
+    
+    override public func viewDidLoad() {
+        super.viewDidLoad()
+
+        view.backgroundColor = UIColor.black
+        captureSession = AVCaptureSession()
+
+        
+        guard let videoCaptureDevice = AVCaptureDevice.default(for: .video) else { return }
+        guard let videoInput = try? AVCaptureDeviceInput(device: videoCaptureDevice) else { return }
+
+        
+        if (captureSession.canAddInput(videoInput)) {
+            captureSession.addInput(videoInput)
+        } else {
+            captureSessionDelegate?.captureSessionWasUnableToAddInput()
+            return
+        }
+
+        
+        let metadataOutput = AVCaptureMetadataOutput()
+
+        if (captureSession.canAddOutput(metadataOutput)) {
+            captureSession.addOutput(metadataOutput)
+
+            metadataOutput.setMetadataObjectsDelegate(self, queue: DispatchQueue.main)
+            metadataOutput.metadataObjectTypes = codeTypes
+        } else {
+            captureSessionDelegate?.captureSessionWasUnableToAddOutput()
+            return
+        }
+
+        
+        previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
+        previewLayer.frame = view.layer.bounds
+        previewLayer.videoGravity = .resizeAspectFill
+        
+        view.layer.addSublayer(previewLayer)
+
+        captureSession.startRunning()
+    }
+
+
+    override public func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+
+        if (captureSession?.isRunning == false) {
+            captureSession.startRunning()
+        }
+    }
+    
+
+    override public func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+
+        if (captureSession?.isRunning == true) {
+            captureSession.stopRunning()
+        }
+    }
+}
+
+#endif
+
+
+#if targetEnvironment(simulator)
+#else
+extension ScannerViewController: AVCaptureMetadataOutputObjectsDelegate {
+    
+    public func metadataOutput(
+        _ output: AVCaptureMetadataOutput,
+        didOutput metadataObjects: [AVMetadataObject],
+        from connection: AVCaptureConnection
+    ) {
+        captureSession.stopRunning()
+
+        if let metadataObject = metadataObjects.first {
+            captureSessionDelegate?.captureSession(didScan: metadataObject)
+        }
+
+        dismiss(animated: true)
+    }
+}
+#endif

day-079/Projects/QRConnections/QRConnections/Scenes/Collected Contacts/ContactsContainerView.swift

@@ -9,13 +9,17 @@
 import SwiftUI
 
 
-struct ContactsContainerView: View {
+struct ContactsContainerView {
+    @EnvironmentObject private var store: AppStore
+    
     @ObservedObject var viewModel = ViewModel()
+    
+    @State private var isShowingScannerView = false
 }
 
 
-// MARK: - Body
+// MARK: - View
-extension ContactsContainerView {
+extension ContactsContainerView: View {
 
     var body: some View {
         NavigationView {
@@ -27,6 +31,12 @@ extension ContactsContainerView {
             }
             .navigationBarTitle("Collected Contacts")
             .navigationBarItems(trailing: addContactButton)
+            .sheet(isPresented: $isShowingScannerView) {
+                QRCodeScannerView(
+                    simulatedData: "🚀 Rocket Man",
+                    onScanCompleted: self.codeScanCompleted(_:)
+                )
+            }
         }
     }
 }
@@ -56,7 +66,7 @@ extension ContactsContainerView {
     
     private var addContactButton: some View {
         Button(action: {
-            
+            self.isShowingScannerView = true
         }) {
             Image(systemName: "qrcode.viewfinder")
                 .imageScale(.large)
@@ -66,6 +76,30 @@ extension ContactsContainerView {
 }
 
 
+// MARK: - Private Helpers
+private extension ContactsContainerView {
+    
+    func codeScanCompleted(_ result: QRCodeScannerView.Completion) {
+        switch result {
+        case .success(let qrCodeString):
+            createNewContact(from: qrCodeString)
+//            self.store.send(ContactsSideEffect.createContact(qrCodeString))
+        case .failure(let error):
+            print("Scanning failed. Error \(error.localizedDescription)")
+        }
+    }
+    
+    
+    func createNewContact(from qrCodeString: String) {
+        let context = CurrentApp.coreDataManager.backgroundContext
+        let contact = Contact.make(fromName: qrCodeString, using: context)
+
+        self.store.send(ContactsSideEffect.save(contact))
+    }
+}
+
+
+
 // MARK: - Preview
 struct ContactsContainerView_Previews: PreviewProvider {
 
@@ -74,5 +108,6 @@ struct ContactsContainerView_Previews: PreviewProvider {
             viewModel: .init()
         )
         .environment(\.managedObjectContext, CurrentApp.coreDataManager.mainContext)
+        .environmentObject(SampleData.appStore)
     }
 }

day-079/Projects/QRConnections/QRConnections/Scenes/RootView.swift

@@ -25,7 +25,6 @@ struct RootView: View {
 extension RootView {
 
     var body: some View {
-        
         TabView {
             ContactsContainerView(viewModel: .init())
                 .tabItem {
@@ -42,7 +41,6 @@ extension RootView {
                 }
                 .tag(Tab.userQRCode)
         }
-//        .environmentObject(store)
         .edgesIgnoringSafeArea(.top)
     }
 }