import SwiftUI

struct ContentView: View {
    @State private var items = ["Item 1", "Item 2", "Item 3"] // Sample data
    @State private var isLoading = false // State to manage loading state

    var body: some View {
        NavigationView {
            List(items, id: \.self) { item in
                Text(item) // Display items in the list
            }
            .navigationTitle("Pull to Refresh")
            .refreshable {
                await loadData() // Call the async function to load data
            }
        }
    }

    func loadData() async {
        isLoading = true // Set loading state
        // Simulate network delay
        try? await Task.sleep(nanoseconds: 2 * 1_000_000_000) // Wait for 2 seconds
        // Update items with new data
        items.append("Item \(items.count + 1)") // Add a new item for demonstration
        isLoading = false // Reset loading state
    }
}

@main
struct PullToRefreshApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView() // Main content view
        }
    }
}