Added settings page, doesn't save the values yet

SleepDebt/SettingsView.swift

@@ -0,0 +1,70 @@
+//
+//  SettingsView.swift
+//  SleepDebt
+//
+//  Created by Oliver Hnát on 06.01.2024.
+//
+
+import SwiftUI
+
+struct SettingsView: View {
+    @State var sleepDebtPeriod = 30
+    @State var repaymentPeriod = 7
+    @FocusState private var focusItem: Bool
+    private var repaymentString = "Repayment period (days)"
+    private var sleepDebtString = "Sleep debt period (days)"
+    let formatter: NumberFormatter = {
+        let formatter = NumberFormatter()
+        formatter.numberStyle = .decimal
+        return formatter
+    }()
+    
+    var body: some View {
+        NavigationStack {
+            
+            List {
+                Section {
+                    LabeledContent {
+                        TextField("", value: $sleepDebtPeriod, formatter: formatter)
+                            .keyboardType(.numberPad)
+                            .onSubmit {
+                                focusItem = false
+                            }
+                            .focused($focusItem)
+                            .multilineTextAlignment(.trailing)
+                            .foregroundStyle(.blue)
+                    } label: {
+                        Text(sleepDebtString)
+                            .fixedSize()
+                    }
+                    
+                    .lineLimit(1)
+                    LabeledContent {
+                        TextField("", value: $repaymentPeriod, formatter: formatter)
+                            .keyboardType(.numberPad)
+                            .onSubmit {
+                                focusItem = false
+                            }
+                            .focused($focusItem)
+                            .multilineTextAlignment(.trailing)
+                            .foregroundStyle(.blue)
+                        
+                    } label: {
+                        Text(repaymentString)
+                            .fixedSize()
+                    }
+                }
+            }
+            .onTapGesture{
+                focusItem = false
+            }
+            .navigationTitle("Settings")
+        }
+        
+        
+    }
+}
+
+#Preview {
+    SettingsView()
+}

SleepDebt/SleepDebtApp.swift

@@ -12,7 +12,7 @@ struct SleepDebtApp: App {
     @StateObject var healthKitManager = HealthKitManager()
     var body: some Scene {
         WindowGroup {
-            ContentView()
+            SleepDebtTabView()
                 .environmentObject(healthKitManager)
         }
     }

SleepDebt/SleepDebtTabView.swift

@@ -0,0 +1,35 @@
+//
+//  SleepDebtTabView.swift
+//  SleepDebt
+//
+//  Created by Oliver Hnát on 06.01.2024.
+//
+
+import SwiftUI
+
+struct SleepDebtTabView: View {
+    @State var selectedTab = "Home"
+    @StateObject var healthKitManager = HealthKitManager()
+    var body: some View {
+        TabView(selection: $selectedTab) {
+            ContentView()
+                .tag("Home")
+                .tabItem {
+                    Image(systemName: "house")
+                    Text("Home")
+                }
+                .environmentObject(healthKitManager)
+            SettingsView()
+                .tag("Settings")
+                .tabItem {
+                    Image(systemName: "gear")
+                    Text("Settings")
+                }
+                .environmentObject(healthKitManager)
+        }
+    }
+}
+
+#Preview {
+    SleepDebtTabView()
+}