Initial Commit

KlipperMon/Assets.xcassets/AccentColor.colorset/Contents.json

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+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

KlipperMon/Assets.xcassets/AppIcon.appiconset/Contents.json

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+{
+  "images" : [
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "16x16"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "16x16"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "32x32"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "32x32"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "128x128"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "128x128"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "256x256"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "256x256"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "512x512"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "512x512"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

KlipperMon/Assets.xcassets/Contents.json

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+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

KlipperMon/ContentView.swift

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+//
+//  ContentView.swift
+//  KlipperMon
+//
+//  Created by maddiefuzz on 2/7/23.
+//
+
+import SwiftUI
+import CoreData
+
+struct ContentView: View {
+    @Environment(\.managedObjectContext) private var viewContext
+
+    @FetchRequest(
+        sortDescriptors: [NSSortDescriptor(keyPath: \Item.timestamp, ascending: true)],
+        animation: .default)
+    private var items: FetchedResults<Item>
+
+    var body: some View {
+        NavigationView {
+            List {
+                ForEach(items) { item in
+                    NavigationLink {
+                        Text("Item at \(item.timestamp!, formatter: itemFormatter)")
+                    } label: {
+                        Text(item.timestamp!, formatter: itemFormatter)
+                    }
+                }
+                .onDelete(perform: deleteItems)
+            }
+            .toolbar {
+                ToolbarItem {
+                    Button(action: addItem) {
+                        Label("Add Item", systemImage: "plus")
+                    }
+                }
+            }
+            Text("Select an item")
+        }
+    }
+
+    private func addItem() {
+        withAnimation {
+            let newItem = Item(context: viewContext)
+            newItem.timestamp = Date()
+
+            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)")
+            }
+        }
+    }
+
+    private func deleteItems(offsets: IndexSet) {
+        withAnimation {
+            offsets.map { items[$0] }.forEach(viewContext.delete)
+
+            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)")
+            }
+        }
+    }
+}
+
+private let itemFormatter: DateFormatter = {
+    let formatter = DateFormatter()
+    formatter.dateStyle = .short
+    formatter.timeStyle = .medium
+    return formatter
+}()
+
+struct ContentView_Previews: PreviewProvider {
+    static var previews: some View {
+        ContentView().environment(\.managedObjectContext, PersistenceController.preview.container.viewContext)
+    }
+}

KlipperMon/KlipperMon.entitlements

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>com.apple.security.app-sandbox</key>
+    <true/>
+    <key>com.apple.security.files.user-selected.read-only</key>
+    <true/>
+</dict>
+</plist>

KlipperMon/KlipperMon.xcdatamodeld/.xccurrentversion

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>_XCCurrentVersionName</key>
+	<string>KlipperMon.xcdatamodel</string>
+</dict>
+</plist>

KlipperMon/KlipperMon.xcdatamodeld/KlipperMon.xcdatamodel/contents

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+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="1" systemVersion="11A491" minimumToolsVersion="Automatic" sourceLanguage="Swift" usedWithCloudKit="false" userDefinedModelVersionIdentifier="">
+    <entity name="Item" representedClassName="Item" syncable="YES" codeGenerationType="class">
+        <attribute name="timestamp" optional="YES" attributeType="Date" usesScalarValueType="NO"/>
+    </entity>
+    <elements>
+        <element name="Item" positionX="-63" positionY="-18" width="128" height="44"/>
+    </elements>
+</model>

KlipperMon/KlipperMonApp.swift

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+//
+//  KlipperMonApp.swift
+//  KlipperMon
+//
+//  Created by maddiefuzz on 2/7/23.
+//
+
+import SwiftUI
+
+@main
+struct KlipperMonApp: App {
+    let persistenceController = PersistenceController.shared
+
+    var body: some Scene {
+        WindowGroup {
+            ContentView()
+                .environment(\.managedObjectContext, persistenceController.container.viewContext)
+        }
+    }
+}

KlipperMon/Persistence.swift

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+//
+//  Persistence.swift
+//  KlipperMon
+//
+//  Created by maddiefuzz on 2/7/23.
+//
+
+import CoreData
+
+struct PersistenceController {
+    static let shared = PersistenceController()
+
+    static var preview: PersistenceController = {
+        let result = PersistenceController(inMemory: true)
+        let viewContext = result.container.viewContext
+        for _ in 0..<10 {
+            let newItem = Item(context: viewContext)
+            newItem.timestamp = Date()
+        }
+        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
+    }()
+
+    let container: NSPersistentContainer
+
+    init(inMemory: Bool = false) {
+        container = NSPersistentContainer(name: "KlipperMon")
+        if inMemory {
+            container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null")
+        }
+        container.loadPersistentStores(completionHandler: { (storeDescription, error) in
+            if let error = error as NSError? {
+                // 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.
+
+                /*
+                 Typical reasons for an error here include:
+                 * The parent directory does not exist, cannot be created, or disallows writing.
+                 * The persistent store is not accessible, due to permissions or data protection when the device is locked.
+                 * The device is out of space.
+                 * The store could not be migrated to the current model version.
+                 Check the error message to determine what the actual problem was.
+                 */
+                fatalError("Unresolved error \(error), \(error.userInfo)")
+            }
+        })
+        container.viewContext.automaticallyMergesChangesFromParent = true
+    }
+}

KlipperMon/Preview Content/Preview Assets.xcassets/Contents.json

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+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}