Preview and minor fixes

WordAX/Model/DataController.swift

@@ -17,8 +17,39 @@ class DataController: ObservableObject {
         container.viewContext
     }
     
+    static var preview: DataController = {
+        let result = DataController(inMemory: true)
+        let viewContext = result.container.viewContext
+        for _ in 0..<10 {
+            let flashcard = Flashcard(context: viewContext)
+            flashcard.id = UUID()
+            flashcard.name = ["This is a name", "This is another name", "This is a third name", "This is a fourth name"].randomElement()!
+            flashcard.desc = [
+                "This is a very long description that should be even longer maybe even lorem ipsum to cover all cases?",
+                "This is a very short description",
+                "This is a medium length description that should be long enough to cover all cases"
+            ].randomElement()!
+            flashcard.nextSpacedRepetitionMilestone = SpacedRepetitionMilestoneEnum.allCases.randomElement()!.rawValue
+            flashcard.lastSeenOn  = [nil, Date(), Date().addingTimeInterval([-86400, -24000, -100000].randomElement()!)].randomElement()!
+            flashcard.shownCount = [0, 1, 2, 3, 4, 5].randomElement()!
+            flashcard.dateAdded = [Date(), Date().addingTimeInterval(-86400), Date().addingTimeInterval(-172800)].randomElement()!
+        }
+        do {
+            try viewContext.save()
+        } catch {
+            // Replace this implementation with code to handle the error appropriately.
+            // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
+            let nsError = error as NSError
+            fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
+        }
+        return result
+    }()
     
-    init() {
+    
+    init(inMemory: Bool = false) {
+        if inMemory {
+            container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null")
+        }
         container.loadPersistentStores { description, error in
             if let error = error {
                 print("Core data failed to load: \(error.localizedDescription)")

WordAX/Views/AddFlashCard.swift

@@ -12,13 +12,18 @@ struct AddFlashCard: View {
     @State var description: String = ""
     @Binding var isShowing: Bool
     @Environment(\.managedObjectContext) var moc
+    @FocusState private var focus: Bool
     var body: some View {
         NavigationStack {
             List {
                 Section(header: Text("Flashcard details") ) {
                     TextField("Name", text: $text)
+                        .focused($focus)
                     TextField("Description", text: $description, axis: .vertical)
                 }
+                .onAppear {
+                    self.focus = true
+                }
             }
             .toolbar {
                 ToolbarItemGroup(placement: .topBarLeading) {
@@ -55,4 +60,5 @@ struct AddFlashCard: View {
 #Preview {
     @State var isShowing = true
     return AddFlashCard(isShowing: $isShowing)
+        .environment(\.managedObjectContext, DataController.preview.container.viewContext)
 }

WordAX/Views/AnkiView.swift

@@ -83,4 +83,5 @@ struct AnkiView: View {
 #Preview {
     AnkiView()
         .environmentObject(WordAXModelView())
+        .environment(\.managedObjectContext, DataController.preview.container.viewContext)
 }

WordAX/Views/FlashCardListRowView.swift

@@ -46,16 +46,16 @@ struct FlashCardListRowView: View {
 }
 
 #Preview {
-    let fc = Flashcard()
+    let flashcard = try? DataController.preview.viewContext.fetch(Flashcard.fetchRequest()).first
-    fc.id = UUID()
-    fc.name = "Mesmerizing"
-    fc.desc = "Some very long description like Lorem Ipsum which I'm to lazy to copy"
     return Group {
-        FlashCardListRowView(flashcard: fc)
+        FlashCardListRowView(flashcard: flashcard!)
             .environmentObject(WordAXModelView())
-        FlashCardListRowView(flashcard: fc)
+            .environment(\.managedObjectContext, DataController.preview.container.viewContext)
+        FlashCardListRowView(flashcard: flashcard!)
             .environmentObject(WordAXModelView())
-        FlashCardListRowView(flashcard: fc)
+            .environment(\.managedObjectContext, DataController.preview.container.viewContext)
+        FlashCardListRowView(flashcard: flashcard!)
             .environmentObject(WordAXModelView())
+            .environment(\.managedObjectContext, DataController.preview.container.viewContext)
     }
 }

WordAX/Views/FlashCardListView.swift

@@ -11,8 +11,7 @@ struct FlashCardListView: View {
     @EnvironmentObject var model: WordAXModelView
     @State var showDescription = true
     @State var addFlashcard = false
-//    @ObservedObject var flashcards = DataController.shared.getAllFlashcards()
+    @FetchRequest(sortDescriptors: [NSSortDescriptor(key: "dateAdded", ascending: false)]) var flashcards: FetchedResults<Flashcard>
-    @FetchRequest(sortDescriptors: []) var flashcards: FetchedResults<Flashcard>
     var body: some View {
         GeometryReader { geometry in
             NavigationSplitView {
@@ -52,7 +51,8 @@ struct FlashCardListView: View {
     }
 }
 
-//#Preview {
+#Preview {
-//    FlashCardListView()
+    FlashCardListView()
-//        .environmentObject(WordAXModelView())
+        .environmentObject(WordAXModelView())
-//}
+        .environment(\.managedObjectContext, DataController.preview.container.viewContext)
+}

WordAX/Views/FlashCardView.swift

@@ -7,6 +7,7 @@
 
 import SwiftUI
 import UIKit
+import CoreData
 
 struct FlashCardView: View {
     var flashcard: Flashcard
@@ -47,6 +48,8 @@ struct FlashCardView: View {
 
 #Preview {
     @State var showDescription = false
-    return FlashCardView(flashcard: DataController().getAllFlashcards()[0], showDescription: $showDescription)
+    let flashcard = try? DataController.preview.viewContext.fetch(Flashcard.fetchRequest()).first
+    return FlashCardView(flashcard: flashcard!, showDescription: $showDescription)
         .environmentObject(WordAXModelView())
+        .environment(\.managedObjectContext, DataController.preview.container.viewContext)
 }

WordAX/Views/MainView.swift

@@ -45,4 +45,5 @@ struct MainView: View {
 #Preview {
     MainView()
         .environmentObject(WordAXModelView())
+        .environment(\.managedObjectContext, DataController.preview.container.viewContext)
 }

WordAX/Views/NextRepetitionButtonView.swift

@@ -62,6 +62,8 @@ extension ShapeStyle where Self == Color {
 
 //#Preview {
 //    @State var showDescription = false
-//    return NextRepetitionButtonView(buttonText: "Excellent", nextMilestone: Flashcard.SpacedRepetitionMilestoneEnum.OneDay, wordId: 0, showDescription: $showDescription)
+//    let flashcard = try? DataController.preview.viewContext.fetch(Flashcard.fetchRequest()).first
+//    return NextRepetitionButtonView(buttonText: "Excellent", nextMilestone: Flashcard.SpacedRepetitionMilestoneEnum.OneDay, showDescription: $showDescription)
 //        .environmentObject(WordAXModelView())
+//        .environment(\.managedObjectContext, DataController.preview.container.viewContext)
 //}

WordAX/Views/SettingsView.swift

@@ -16,4 +16,5 @@ struct SettingsView: View {
 #Preview {
     SettingsView()
         .environmentObject(WordAXModelView())
+        .environment(\.managedObjectContext, DataController.preview.container.viewContext)
 }