Appendix 1: Core Data

DevAcademy.xcodeproj/project.pbxproj

@@ -19,6 +19,7 @@
 		84FA93B92A68319800DFC974 /* Properties.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84FA93B82A68319800DFC974 /* Properties.swift */; };
 		BE1E12592AA5C6CB000BA3D8 /* StoreadAsyncImage.swift in Sources */ = {isa = PBXBuildFile; fileRef = BE1E12582AA5C6CB000BA3D8 /* StoreadAsyncImage.swift */; };
 		BE38A88A2AA7294400EB5431 /* UserLocationService.swift in Sources */ = {isa = PBXBuildFile; fileRef = BE38A8892AA7294400EB5431 /* UserLocationService.swift */; };
+		BE3DE9622AF3A83400F2028D /* CoreDataService.swift in Sources */ = {isa = PBXBuildFile; fileRef = BE3DE9612AF3A83400F2028D /* CoreDataService.swift */; };
 		BEEF9EC12A67C74E002126F4 /* PlacesService.swift in Sources */ = {isa = PBXBuildFile; fileRef = BEEF9EC02A67C74E002126F4 /* PlacesService.swift */; };
 		C05610492A5C78CA007FB970 /* DevAcademyApp.swift in Sources */ = {isa = PBXBuildFile; fileRef = C05610482A5C78CA007FB970 /* DevAcademyApp.swift */; };
 		C056104B2A5C78CA007FB970 /* RootView.swift in Sources */ = {isa = PBXBuildFile; fileRef = C056104A2A5C78CA007FB970 /* RootView.swift */; };
@@ -47,6 +48,7 @@
 		BE1E12582AA5C6CB000BA3D8 /* StoreadAsyncImage.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StoreadAsyncImage.swift; sourceTree = "<group>"; };
 		BE38A8882AA7285B00EB5431 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist; path = Info.plist; sourceTree = "<group>"; };
 		BE38A8892AA7294400EB5431 /* UserLocationService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UserLocationService.swift; sourceTree = "<group>"; };
+		BE3DE9612AF3A83400F2028D /* CoreDataService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CoreDataService.swift; sourceTree = "<group>"; };
 		BEEF9EC02A67C74E002126F4 /* PlacesService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PlacesService.swift; sourceTree = "<group>"; };
 		C05610452A5C78CA007FB970 /* DevAcademy.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = DevAcademy.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		C05610482A5C78CA007FB970 /* DevAcademyApp.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DevAcademyApp.swift; sourceTree = "<group>"; };
@@ -114,6 +116,7 @@
 				C0B74A2E2A8280D80018D10F /* Services.swift */,
 				BEEF9EC02A67C74E002126F4 /* PlacesService.swift */,
 				BE38A8892AA7294400EB5431 /* UserLocationService.swift */,
+				BE3DE9612AF3A83400F2028D /* CoreDataService.swift */,
 			);
 			path = Services;
 			sourceTree = "<group>";
@@ -286,6 +289,7 @@
 				84FA93B12A68313E00DFC974 /* PossibleKind.swift in Sources */,
 				C0CAEACB2A80220A008D87C2 /* Coordinator.swift in Sources */,
 				C0B74A2D2A8280C60018D10F /* ObservableObjects.swift in Sources */,
+				BE3DE9622AF3A83400F2028D /* CoreDataService.swift in Sources */,
 				BE1E12592AA5C6CB000BA3D8 /* StoreadAsyncImage.swift in Sources */,
 				84FA93B72A68317F00DFC974 /* Point.swift in Sources */,
 				C056104B2A5C78CA007FB970 /* RootView.swift in Sources */,

DevAcademy/Environment/ObservableObjects.swift

@@ -16,7 +16,7 @@ final class ObservableObjects {
 
 extension ObservableObjects {
     convenience init(services: Services) {
-        let places = PlacesObservableObject(placesService: services.placesService, locationService: services.locationService)
+        let places = PlacesObservableObject(placesService: services.placesService, locationService: services.locationService, coreDataService: services.coreDataService)
 
         self.init(
             places: places

DevAcademy/Environment/ObservableObjects/PlacesObservableObject.swift

@@ -3,26 +3,28 @@ import CoreLocation
 
 final class PlacesObservableObject: ObservableObject {
     @Published var places: [Place] = []
-
+    
     private(set) var favouritePlaces: [Int]? {
         get { UserDefaults.standard.array(forKey: "favourites") as? [Int] }
         set {
             UserDefaults.standard.set(newValue, forKey: "favourites")
             updatePlaces()
         }
     }
-
+    
     private var rawPlaces: [Place] = [] {
         didSet { updatePlaces() }
     }
     private let placesService: PlacesService
     private let locationService: UserLocationService
+    private let coreDataService: CoreDataService
     private var lastUpdatedLocation: CLLocation?
-
-
-    init(placesService: PlacesService, locationService: UserLocationService) {
+    
+    
+    init(placesService: PlacesService, locationService: UserLocationService, coreDataService: CoreDataService) {
         self.placesService = placesService
         self.locationService = locationService
+        self.coreDataService = coreDataService
 
         self.locationService.listenDidUpdateLocation { [weak self] location in
             DispatchQueue.main.async {
@@ -40,11 +42,11 @@ final class PlacesObservableObject: ObservableObject {
             }
         }
     }
-
+    
     func set(place: Place, favourite setFavourite: Bool) {
         var favouritePlaces = self.favouritePlaces ?? []
         let currentIndex = favouritePlaces.firstIndex(of: place.attributes.ogcFid)
-
+        
         switch (setFavourite, currentIndex) {
         case (true, nil):
             favouritePlaces.append(place.attributes.ogcFid)
@@ -53,10 +55,10 @@ final class PlacesObservableObject: ObservableObject {
         default:
             return
         }
-
+        
         self.favouritePlaces = favouritePlaces
     }
-
+    
     // A. Closure variant
     func fetchPlaces() {
         placesService.places { result in
@@ -70,7 +72,7 @@ final class PlacesObservableObject: ObservableObject {
             }
         }
     }
-
+    
     // B. Async with checked continuation variant
     func fetchPlacesWithCheckedContinuation() async {
         let result = await placesService.placesWithCheckedContinuation()
@@ -83,7 +85,7 @@ final class PlacesObservableObject: ObservableObject {
             print(error)
         }
     }
-
+    
     // C. Async variant
     @MainActor
     func fetchPlacesWithAsync() async {
@@ -94,7 +96,7 @@ final class PlacesObservableObject: ObservableObject {
             print(error)
         }
     }
-
+    
     private func updatePlaces() {
         var regularPlaces = rawPlaces
 
@@ -106,14 +108,14 @@ final class PlacesObservableObject: ObservableObject {
                 guard let lPoint = lPlace.geometry?.cllocation else {
                     return true
                 }
-
+                
                 return lastUpdatedLocation.distance(from: lPoint).magnitude < lastUpdatedLocation.distance(from: rPoint).magnitude
             }
         }
 
         var presentOnTop: [Place] = []
         let favouritePlaces = self.favouritePlaces ?? []
-
+        
         regularPlaces.removeAll { place in
             if favouritePlaces.contains(place.attributes.ogcFid) {
                 presentOnTop.append(place)
@@ -122,7 +124,7 @@ final class PlacesObservableObject: ObservableObject {
                 return false
             }
         }
-
+        
         self.places = presentOnTop + regularPlaces
     }
 
@@ -139,4 +141,12 @@ final class PlacesObservableObject: ObservableObject {
         self.lastUpdatedLocation = userLocation
         updatePlaces()
     }
+
+    func loadNote(forPlace ogcFid: Int) -> String? {
+        coreDataService.loadNote(forPlace: ogcFid)
+    }
+
+    func save(note: String?, forPlace ogcFid: Int) {
+        coreDataService.save(note: note, forPlace: ogcFid)
+    }
 }

DevAcademy/Scenes/PlaceDetail/PlaceDetailView.swift

@@ -5,6 +5,12 @@ struct PlaceDetailView: View {
     let state: PlaceDetailViewState
 
     var body: some View {
+        TextEditor(text: .init(
+            get: { state.note ?? "" },
+            set: { state.note = $0 })
+        )
+        .foregroundColor(Color.gray)
+        .border(Color.red)
         ScrollView {
             VStack {
                 HStack(alignment: .center) {
@@ -21,6 +27,8 @@ struct PlaceDetailView: View {
                     }
                 }
                 .padding([.horizontal, .bottom])
+
+
                 if let placeImageUrl = state.placeImageUrl {
                     AsyncImage(url: placeImageUrl) { image in
                         image
@@ -49,6 +57,12 @@ struct PlaceDetailView: View {
             }
             .navigationTitle(state.placeTitle)
         }
+        .onAppear {
+            state.loadNote()
+        }
+        .onDisappear {
+            state.saveNoteState()
+        }
     }
 }
 

DevAcademy/Scenes/PlaceDetail/PlaceDetailViewState.swift

@@ -3,7 +3,8 @@ import MapKit
 
 struct PlaceDetailViewState: DynamicProperty {
     @EnvironmentObject private var placesObject: PlacesObservableObject
-
+    @State var note: String? = nil
+
     private let place: Place
 
     init(place: Place) {
@@ -36,5 +37,13 @@ struct PlaceDetailViewState: DynamicProperty {
         }
         return CLLocationCoordinate2D(latitude: latitude, longitude: longitude)
     }
+
+    func loadNote() {
+        note = placesObject.loadNote(forPlace: place.attributes.ogcFid)
+    }
+
+    func saveNoteState() {
+        placesObject.save(note: note, forPlace: place.attributes.ogcFid)
+    }
 }
 

DevAcademy/Services/CoreDataService.swift

@@ -0,0 +1,27 @@
+//
+//  CoreDataService.swift
+//  DevAcademy
+//
+//  Created by Mikoláš Stuchlík on 02.11.2023.
+//
+
+import CoreData
+
+protocol CoreDataService {
+    func loadNote(forPlace ogcFid: Int) -> String?
+    func save(note: String?, forPlace ogcFid: Int)
+}
+
+final class ProductionsCoreDataService: NSObject, CoreDataService {
+    func loadNote(forPlace ogcFid: Int) -> String? {
+        nil
+    }
+
+    func save(note: String?, forPlace ogcFid: Int) {
+    }
+}
+
+final class MockCoreDataService: CoreDataService {
+    func loadNote(forPlace ogcFid: Int) -> String? { nil }
+    func save(note: String?, forPlace ogcFid: Int) { }
+}

DevAcademy/Services/Services.swift

@@ -3,24 +3,29 @@ import Foundation
 final class Services {
     let placesService: PlacesService
     let locationService: UserLocationService
+    let coreDataService: CoreDataService
 
     init(
         placesService: PlacesService,
-        locationService: UserLocationService
+        locationService: UserLocationService,
+        coreDateService: CoreDataService
     ) {
         self.placesService = placesService
         self.locationService = locationService
+        self.coreDataService = coreDateService
     }
 }
 
 extension Services {
     convenience init() {
         let placesService = ProductionPlacesService()
         let locationService = ProductionUserLocationService()
+        let coreDataService = ProductionsCoreDataService()
 
         self.init(
             placesService: placesService,
-            locationService: locationService
+            locationService: locationService,
+            coreDateService: coreDataService
         )
     }
 }
@@ -30,6 +35,7 @@ extension Services {
 extension Services {
     static let mock = Services(
         placesService: MockPlacesService(),
-        locationService: MockLocationService()
+        locationService: MockLocationService(),
+        coreDateService: MockCoreDataService()
     )
 }