Countdown not working yet

WordAX.xcodeproj/project.pbxproj

@@ -19,7 +19,7 @@
 		6CEF7F7D2BC457E600E205F6 /* DataController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6CEF7F7C2BC457E600E205F6 /* DataController.swift */; };
 		6CEF7F812BC4694900E205F6 /* WordAXCD.xcdatamodeld in Sources */ = {isa = PBXBuildFile; fileRef = 6CEF7F7F2BC4694900E205F6 /* WordAXCD.xcdatamodeld */; };
 		6CEF7F842BC46B5900E205F6 /* Flashcard+CoreDataClass.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6CEF7F822BC46B5900E205F6 /* Flashcard+CoreDataClass.swift */; };
-		6CEF7F9E2BC6B4F100E205F6 /* Flashcard+CoreDataProperties.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6CEF7F9C2BC6B4F100E205F6 /* Flashcard+CoreDataProperties.swift */; };
+		6CEF7FA32BC88F6000E205F6 /* Flashcard+CoreDataProperties.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6CEF7FA12BC88F6000E205F6 /* Flashcard+CoreDataProperties.swift */; };
 		6CF439522B83541D004C3543 /* WordAXApp.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6CF439512B83541D004C3543 /* WordAXApp.swift */; };
 		6CF439542B83541D004C3543 /* MainView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6CF439532B83541D004C3543 /* MainView.swift */; };
 		6CF439562B83541E004C3543 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 6CF439552B83541E004C3543 /* Assets.xcassets */; };
@@ -40,7 +40,8 @@
 		6CEF7F802BC4694900E205F6 /* WordAX.xcdatamodel */ = {isa = PBXFileReference; lastKnownFileType = wrapper.xcdatamodel; path = WordAX.xcdatamodel; sourceTree = "<group>"; };
 		6CEF7F822BC46B5900E205F6 /* Flashcard+CoreDataClass.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Flashcard+CoreDataClass.swift"; sourceTree = "<group>"; };
 		6CEF7F962BC6B45F00E205F6 /* WordAX0.0.1.xcdatamodel */ = {isa = PBXFileReference; lastKnownFileType = wrapper.xcdatamodel; path = WordAX0.0.1.xcdatamodel; sourceTree = "<group>"; };
-		6CEF7F9C2BC6B4F100E205F6 /* Flashcard+CoreDataProperties.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = "Flashcard+CoreDataProperties.swift"; path = "../../Flashcard+CoreDataProperties.swift"; sourceTree = "<group>"; };
+		6CEF7F9F2BC88F3900E205F6 /* WordAX0.0.2.xcdatamodel */ = {isa = PBXFileReference; lastKnownFileType = wrapper.xcdatamodel; path = WordAX0.0.2.xcdatamodel; sourceTree = "<group>"; };
+		6CEF7FA12BC88F6000E205F6 /* Flashcard+CoreDataProperties.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Flashcard+CoreDataProperties.swift"; sourceTree = "<group>"; };
 		6CF4394E2B83541D004C3543 /* WordAX.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = WordAX.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		6CF439512B83541D004C3543 /* WordAXApp.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WordAXApp.swift; sourceTree = "<group>"; };
 		6CF439532B83541D004C3543 /* MainView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MainView.swift; sourceTree = "<group>"; };
@@ -80,7 +81,7 @@
 				6CEF7F7C2BC457E600E205F6 /* DataController.swift */,
 				6CEF7F7F2BC4694900E205F6 /* WordAXCD.xcdatamodeld */,
 				6CEF7F822BC46B5900E205F6 /* Flashcard+CoreDataClass.swift */,
-				6CEF7F9C2BC6B4F100E205F6 /* Flashcard+CoreDataProperties.swift */,
+				6CEF7FA12BC88F6000E205F6 /* Flashcard+CoreDataProperties.swift */,
 			);
 			path = Model;
 			sourceTree = "<group>";
@@ -197,7 +198,7 @@
 				6CF439542B83541D004C3543 /* MainView.swift in Sources */,
 				6C8185082B8B523E0033CF46 /* NextRepetitionButtonView.swift in Sources */,
 				6C8185062B8A537F0033CF46 /* FlashCardView.swift in Sources */,
-				6CEF7F9E2BC6B4F100E205F6 /* Flashcard+CoreDataProperties.swift in Sources */,
+				6CEF7FA32BC88F6000E205F6 /* Flashcard+CoreDataProperties.swift in Sources */,
 				6C81850A2B8BA5740033CF46 /* FlashCardListView.swift in Sources */,
 				6C8185002B88C9660033CF46 /* WordAXModelView.swift in Sources */,
 				6C8185042B88CA210033CF46 /* AnkiView.swift in Sources */,
@@ -418,6 +419,7 @@
 		6CEF7F7F2BC4694900E205F6 /* WordAXCD.xcdatamodeld */ = {
 			isa = XCVersionGroup;
 			children = (
+				6CEF7F9F2BC88F3900E205F6 /* WordAX0.0.2.xcdatamodel */,
 				6CEF7F962BC6B45F00E205F6 /* WordAX0.0.1.xcdatamodel */,
 				6CEF7F802BC4694900E205F6 /* WordAX.xcdatamodel */,
 			);

WordAX/Model/DataController.swift

@@ -29,8 +29,8 @@ class DataController: ObservableObject {
                 "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.nextSpacedRepetitionMilestone = SpacedRepetitionMilestoneEnum.OneYear.rawValue
-            flashcard.lastSeenOn  = [nil, Date(), Date().addingTimeInterval([-86400, -24000, -100000].randomElement()!)].randomElement()!
+            flashcard.lastSeenOn  = [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()!
         }
@@ -70,43 +70,6 @@ class DataController: ObservableObject {
             return []
         }
     }
-    
-    //    public func getFlashCardsToDisplay() -> Flashcard? {
-    //        let flashcards = self.getAllFlashcards()
-    //
-    //        if flashcards.count > 0 {
-    //            let notShownFlashCards = flashcards.filter({!$0.shown})
-    //            // if today is the date they're supposed to be shown
-    //
-    //            let displayToday = flashcards.filter({
-    //                $0.lastSeenOn != nil &&
-    //                $0.lastSeenOn!.addSpacedRepetitionMilestone(
-    //                    milestone: SpacedRepetitionMilestoneEnum.getMilestoneFromInt(
-    //                            value: $0.nextSpacedRepetitionMilestone))
-    //                                .isBeforeTodayOrToday()
-    //            })
-    //            if  displayToday.count > 0 {
-    //                return displayToday.first!
-    //            }
-    //
-    ////            let shownWords = words.filter({ $0.shown })
-    ////            if shownWords.count == 0 {
-    //            if notShownFlashCards.count == 0 {
-    //                return nil
-    //            }
-    //            return notShownFlashCards.sorted(by: {$0.id < $1.id}).first
-    ////            }
-    //            // if today is the day to show a new word
-    ////            let settings = model.settings
-    ////            if shownWords.count == 0 ||
-    ////                settings.lastShownNew == nil ||
-    ////                settings.lastShownNew!.addFrequency(frequency: settings.frequency).isAfterToday() {
-    ////                return words.first!
-    ////            }
-    //        }
-    //        // otherwise show nothing
-    //        return nil
-    //    }
 }
 
 
@@ -133,3 +96,32 @@ extension Int64 {
         return result
     }
 }
+
+extension Int {
+    func convertDurationSecondsToCountdown() -> String {
+        var result = ""
+        // Separate into days, hours, minutes and seconds and take the largest one
+        let days: Int = self / 86400
+        let hours: Int = self / 60 / 60 % 60
+        let minutes: Int = self / 60 % 60
+        let seconds: Int = self % 60
+        if days > 0 {
+            result += "\(days)d"
+        }
+        if hours > 0 {
+            result += " \(hours)h"
+        }
+        if minutes > 0 {
+            result += " \(minutes)min"
+        }
+        if seconds > 0 {
+            result += " \(seconds)s"
+        }
+//        else {
+//            result = "\(self)"
+//        }
+        
+        return result
+        
+    }
+}

WordAX/Model/Flashcard+CoreDataClass.swift

@@ -46,6 +46,20 @@ public class Flashcard: NSManagedObject {
         
     }
     
+    public override func didChangeValue(forKey key: String) {
+        super.didChangeValue(forKey: key)
+        if key == "lastSeenOn" || key == "nextSpacedRepetitionMilestone" {
+            //            updateCalculatedNextRepetition()
+            calculatedNextRepetition = lastSeenOn ?? Date() + TimeInterval(nextSpacedRepetitionMilestone)
+        }
+    }
+    
+    //    func updateCalculatedNextRepetition() {
+    //        if let lastSeen = lastSeenOn {
+    //            calculatedNextRepetition = Calendar.current.date(byAdding: .day, value: Int(nextSpacedRepetitionMilestone), to: lastSeen)
+    //        }
+    //    }
+    
     
     func getSpacedRepetitionMilestone() -> SpacedRepetitionMilestoneEnum {
         return SpacedRepetitionMilestoneEnum.getMilestoneFromInt(value: self.nextSpacedRepetitionMilestone)

WordAX/Model/Flashcard+CoreDataProperties.swift

@@ -2,7 +2,7 @@
 //  Flashcard+CoreDataProperties.swift
 //  WordAX
 //
-//  Created by Oliver Hnát on 10.04.2024.
+//  Created by Oliver Hnát on 11.04.2024.
 //
 //
 
@@ -22,7 +22,9 @@ extension Flashcard {
     @NSManaged public var lastSeenOn: Date?
     @NSManaged public var name: String?
     @NSManaged public var nextSpacedRepetitionMilestone: Int64
+    @NSManaged public var shown: Bool
     @NSManaged public var shownCount: Int64
+    @NSManaged public var calculatedNextRepetition: Date?
 
 }
 

WordAX/Model/WordAXCD.xcdatamodeld/WordAX0.0.2.xcdatamodel/contents

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="22757" systemVersion="23D60" minimumToolsVersion="Automatic" sourceLanguage="Swift" usedWithSwiftData="YES" userDefinedModelVersionIdentifier="">
+    <entity name="Flashcard" representedClassName="Flashcard" syncable="YES">
+        <attribute name="calculatedNextRepetition" optional="YES" attributeType="Date" usesScalarValueType="NO"/>
+        <attribute name="dateAdded" optional="YES" attributeType="Date" usesScalarValueType="NO"/>
+        <attribute name="desc" optional="YES" attributeType="String"/>
+        <attribute name="id" optional="YES" attributeType="UUID" usesScalarValueType="NO"/>
+        <attribute name="lastSeenOn" optional="YES" attributeType="Date" usesScalarValueType="NO"/>
+        <attribute name="name" optional="YES" attributeType="String"/>
+        <attribute name="nextSpacedRepetitionMilestone" optional="YES" attributeType="Integer 64" defaultValueString="0" usesScalarValueType="YES"/>
+        <attribute name="shown" optional="YES" attributeType="Boolean" usesScalarValueType="YES"/>
+        <attribute name="shownCount" optional="YES" attributeType="Integer 64" defaultValueString="0" usesScalarValueType="YES"/>
+    </entity>
+</model>

WordAX/Views/AnkiView.swift

@@ -21,6 +21,19 @@ struct AnkiView: View {
         ]),
         NSPredicate(format: "lastSeenOn == nil")
     ])) var flashcards: FetchedResults<Flashcard>
+    @FetchRequest(
+        sortDescriptors: [
+            NSSortDescriptor(key: "calculatedNextRepetition", ascending: false)
+        ],
+          predicate:
+            NSCompoundPredicate(type: .and, subpredicates: [
+                NSPredicate(format: "%K != nil", "lastSeenOn"),
+            NSPredicate(
+                format: "lastSeenOn + nextSpacedRepetitionMilestone > %@", Date() as CVarArg)
+                ]
+    )) var soonestFlashcard: FetchedResults<Flashcard>
+
+    // get the most recent flashcard
     
     @State var showDescription = false
     
@@ -73,12 +86,62 @@ struct AnkiView: View {
                 }
             }
         } else {
+            // TODO: Add countdown to the next available word
+            VStack{
+                if !soonestFlashcard.isEmpty {
+                    Text("Time: \(timeRemaining.convertDurationSecondsToCountdown())")
+                        .foregroundStyle(.white)
+                        .padding(.horizontal, 20)
+                        .padding(.vertical, 5)
+                        .background(.black.opacity(0.75))
+                        .clipShape(.capsule)
+                }
+                
+//                if !soonestFlashcard.isEmpty {
+//                    Text("HERE")
+//                    Text("\(soonestFlashcard.first!.lastSeenOn!.addingTimeInterval(TimeInterval(soonestFlashcard.first!.nextSpacedRepetitionMilestone)).timeIntervalSince(Date()))")
+//                    Text("\(Int64(timeRemaining))")
+//                    Text("\(soonestFlashcard.first!.lastSeenOn!)")
+//                    Text("\(soonestFlashcard.first!.getSpacedRepetitionMilestone().rawValue)")
+//                    Text("\(soonestFlashcard.first!.lastSeenOn!.addSpacedRepetitionMilestone(milestone: soonestFlashcard.first!.getSpacedRepetitionMilestone()))")
+//                }
+//                if soonestFlashcard.first! {
+//                    Text("HERE")
+//                }
+                
                 Text("There are currently no words to display")
                     .padding()
                     .background(.yellow)
                     .clipShape(.buttonBorder)
             }
+            .onAppear {
+                if !soonestFlashcard.isEmpty {
+                    var lastSeen = soonestFlashcard.first!.lastSeenOn!
+                    var showIn = soonestFlashcard.first!.getSpacedRepetitionMilestone()
+                    var show = lastSeen.addSpacedRepetitionMilestone(milestone: showIn)
+                    timeRemaining = Int(show.timeIntervalSinceNow)
                 }
+            }
+            .onReceive(timer) { time in
+                if !soonestFlashcard.isEmpty {
+                    var lastSeen = soonestFlashcard.first!.lastSeenOn!
+                    var showIn = soonestFlashcard.first!.getSpacedRepetitionMilestone()
+                    var show = lastSeen.addSpacedRepetitionMilestone(milestone: showIn)
+                    timeRemaining = Int(show.timeIntervalSinceNow)
+                }
+//                timeRemaining = Int(soonestFlashcard.first!.lastSeenOn!.addSpacedRepetitionMilestone(milestone: soonestFlashcard.first!.getSpacedRepetitionMilestone()).timeIntervalSince(Date()))
+//                timeRemaining = Int(soonestFlashcard.first!.lastSeenOn!.addingTimeInterval(TimeInterval(soonestFlashcard.first!.nextSpacedRepetitionMilestone)).timeIntervalSince(Date()))
+//                if timeRemaining > 0 {
+//                    timeRemaining -= 1
+//                }
+//                if !soonestFlashcard.isEmpty {
+//                    timeRemaining = Int(Date().timeIntervalSince(soonestFlashcard.first!.lastSeenOn!))
+//                }
+            }
+        }
+    }
+    @State private var timeRemaining = 10
+    let timer = Timer.publish(every: 1, on: .main, in: .common).autoconnect()
 }
 
 #Preview {

WordAX/WordAXModelView.swift

@@ -68,7 +68,7 @@ extension Date {
         if milestone == nil {
             return self
         }
-        return self.addingTimeInterval(TimeInterval(milestone!.rawValue * 24 * 60 * 60))
+        return self.addingTimeInterval(TimeInterval(milestone!.rawValue))
     }
     
     func isAfterToday() -> Bool {