add Workout, Exercise and their Library, Add, and Details views

WorkoutsPlus/Workout/AddWorkout.swift

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+//
+//  AddWorkoutView.swift
+//  WorkoutsPlus
+//
+//  Created by Felix Förtsch on 17.08.24.
+//
+
+import SwiftUI
+
+struct AddWorkout: View {
+		@Environment(\.modelContext) private var modelContext
+		@Environment(\.dismiss) private var dismiss
+		
+		@Bindable var workout: Workout
+		
+		var body: some View {
+				Form {
+						TextField("Workout Name", text: $workout.name)
+				}
+				.toolbar {
+						ToolbarItem(placement: .cancellationAction) {
+								Button("Cancel") {
+										modelContext.delete(workout)
+										dismiss()
+								}
+						}
+						ToolbarItem(placement: .confirmationAction) {
+								Button("Save") {
+										dismiss()
+								}
+						}
+				}
+		}
+}
+
+#Preview {
+		Color.clear
+				.sheet(isPresented: .constant(true)) {
+						AddWorkout(workout: Workout(name: ""))
+				}
+}

WorkoutsPlus/Workout/Workout.swift

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+//
+//  Item.swift
+//  WorkoutsPlus
+//
+//  Created by Felix Förtsch on 10.08.24.
+//
+
+import Foundation
+import SwiftData
+
+@Model
+final class Workout {
+		var isEdited = false
+		
+		var name: String {
+				didSet { isEdited = true }
+		}
+		static var systemImage = "figure.run.square.stack"
+		
+		// Other properties and methods
+		var timestamp: Date
+		
+		var exercises: [Exercise] = []
+		
+		init(name: String = "", timestamp: Date = Date.now) {
+				self.name = name
+				self.timestamp = timestamp
+		}
+		
+		private init(name: String, exercises: [Exercise]) {
+				self.name = name
+				self.timestamp = Date.now
+				self.exercises = exercises
+		}
+		
+		func addExercise(_ exercise: Exercise) {
+				exercises.append(exercise)
+		}
+		
+		static let sampleData = [
+				Workout(name: "RR", exercises: [
+						Exercise("Warm-up"),
+						Exercise("Pull-up Progression"), Exercise("Squat Progression"),
+						Exercise("Dip Progression"), Exercise("Hinge Progression"),
+						Exercise("Row Progression"), Exercise("Push-up Progression"),
+						Exercise("Core Trilet")]),
+				Workout(name: "Minimalist", exercises:[
+						Exercise("Push"), Exercise("Pull"),
+						Exercise("Legs"), Exercise("Core")]),
+				Workout(name: "Rings", exercises: [
+						Exercise("Dips"), Exercise("Chin-ups"),
+						Exercise("Push-ups"), Exercise("Inverted Rows"),
+						Exercise("Hanging Knee Raises"), Exercise("Pistol Squats"), Exercise("Hanging Leg Curls"),
+						Exercise("Sissy Squats")]),
+				Workout(name: "Intervalltraining", exercises: [
+						Exercise("400 m schnell"), Exercise("200 m langsam"),
+						Exercise("400 m schnell"), Exercise("200 m langsam"),
+						Exercise("400 m schnell"), Exercise("200 m langsam"),
+						Exercise("400 m schnell"), Exercise("200 m langsam"),
+						Exercise("400 m schnell"), Exercise("200 m langsam"),
+						Exercise("400 m schnell"), Exercise("200 m langsam")])
+		]
+}

WorkoutsPlus/Workout/WorkoutDetail.swift

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+//
+//  WorkoutDetailsView.swift
+//  WorkoutsPlus
+//
+//  Created by Felix Förtsch on 10.08.24.
+//
+
+import SwiftUI
+import SwiftData
+
+struct WorkoutDetail: View {
+		@Environment(\.dismiss) private var dismiss
+		@Environment(\.modelContext) private var modelContext
+		
+		@Bindable var workout: Workout
+		
+		var body: some View {
+				
+				Form {
+						Section(header: Text("Workout Name")) {
+								TextField("Workout Name", text: $workout.name)
+						}
+						Section(header: Text("Exercises")) {
+								List {
+										ForEach(workout.exercises) { exercise in
+												Text(exercise.name)
+										}
+								}
+						}
+				}
+				.navigationBarTitle("Edit \(workout.name)")
+				.toolbar {
+						ToolbarItem(placement: .confirmationAction) {
+								Button("Done") {
+										dismiss()
+								}
+						}
+				}
+		}
+		
+		private func saveWorkout() {
+				if modelContext.hasChanges {
+						do {
+								try modelContext.save()
+						} catch {
+								print("Failed to save workout: \(error.localizedDescription)")
+						}
+				}
+		}
+}
+
+#Preview {
+		NavigationStack {
+				WorkoutDetail(workout: Workout.sampleData[0])
+						.modelContainer(SampleData.shared.modelContainer)
+		}
+}

WorkoutsPlus/Workout/WorkoutLibrary.swift

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+//
+//  WorkoutLibraryView.swift
+//  WorkoutsPlus
+//
+//  Created by Felix Förtsch on 10.08.24.
+//
+
+import SwiftUI
+import SwiftData
+
+struct WorkoutLibrary: View {
+		@Environment(\.modelContext) private var modelContext
+		@Query(sort: \Workout.name) private var workouts: [Workout]
+		
+		@State private var newWorkout: Workout?
+
+		var body: some View {
+				NavigationSplitView {
+						Group {
+								if !workouts.isEmpty {
+										List {
+												ForEach(workouts) { workout in
+														NavigationLink {
+																WorkoutDetail(workout: workout)
+														} label: {
+																Text(workout.name)
+														}
+												}
+												.onDelete(perform: deleteWorkout)
+										}
+								} else {
+										ContentUnavailableView {
+												Label("No Workouts", systemImage: "figure.run.square.stack")
+										}
+								}
+						}
+						.navigationBarTitle("Workouts")
+						.toolbar {
+								ToolbarItem(placement: .topBarLeading) {
+										EditButton()
+								}
+								ToolbarItem {
+										Button(action: addWorkout) {
+												Label("Add Workout", systemImage: "plus")
+										}
+								}
+						}
+						.sheet(item: $newWorkout) { workout in
+								NavigationStack {
+										AddWorkout(workout: workout)
+								}
+								.interactiveDismissDisabled()
+						}
+				} detail: {
+						// TODO: What does this Detail do?
+						Text("Select a workout")
+								.navigationTitle("Movie")
+				}
+		}
+		
+		private func addWorkout() {
+				withAnimation {
+						let item = Workout(name: "")
+						modelContext.insert(item)
+						newWorkout = item
+				}
+		}
+		
+		// TODO: Brauchen wir das?
+		private func saveWorkout(workout: Workout) {
+				if !workout.name.isEmpty {
+						modelContext.insert(workout)
+						try? modelContext.save()
+				}
+		}
+		
+		private func deleteWorkout(offsets: IndexSet) {
+				withAnimation {
+						for index in offsets {
+								modelContext.delete(workouts[index])
+						}
+						try? modelContext.save()
+				}
+		}
+}
+
+#Preview("With Sample Data") {
+		WorkoutLibrary()
+				.modelContainer(SampleData.shared.modelContainer)
+}
+
+#Preview("Empty Database") {
+		WorkoutLibrary()
+				.modelContainer(for: Workout.self, inMemory: true)
+}
+