add ActiveWorkoutSession logic, refactor Home, add additional sample data, add isDebug

WorkoutsPlus/Components/ItemPicker.swift

@@ -0,0 +1,60 @@
+//
+//  ItemPicker.swift
+//  WorkoutsPlus
+//
+//  Created by Felix Förtsch on 10.09.24.
+//
+
+import SwiftUI
+import SwiftData
+
+struct ItemPicker<Item: Nameable>: View {
+		@Environment(\.dismiss) private var dismiss
+		
+		@State private var searchText = ""
+		var filteredItems: [Item] {
+				if searchText.isEmpty {
+						return items
+				} else {
+						return items.filter { $0.name.localizedCaseInsensitiveContains(searchText) }
+				}
+		}
+		
+		var items: [Item]
+		@Binding var selectedItem: Item?
+		
+		var body: some View {
+				List {
+						ForEach(filteredItems) { item in
+								HStack {
+										Text(item.name)
+										Spacer()
+										if item == selectedItem {
+												Image(systemName: "checkmark")
+														.foregroundColor(.blue)
+										}
+								}
+								// This .contentShape makes the whole row tappable
+								.contentShape(Rectangle())
+								.onTapGesture {
+										selectedItem = item
+										dismiss()
+								}
+						}
+				}
+				.searchable(text: $searchText)
+				.overlay {
+						if filteredItems.isEmpty {
+								ContentUnavailableView.search(text: searchText)
+						}
+				}
+		}
+}
+
+#Preview {
+		@Previewable @State var selectedWorkout: Workout? = nil
+		NavigationStack {
+				ItemPicker<Workout>(items: Workout.sampleData, selectedItem: $selectedWorkout)
+		}
+		.modelContainer(SampleData.shared.modelContainer)
+}