import SwiftUI
import QuickLook

struct ContentView: View {
    @State var url: URL
    
    init() {
    guard let path = Bundle.main.path(forResource: "model", ofType: "usdz") else { fatalError("Couldn't find the supported input file.") }
        
        _url = .init(initialValue: URL(fileURLWithPath: path))
        print("url: \(url)")
    }
    
    var body: some View {
        MyPreviewController(url: url)
    }
}

struct MyPreviewController: UIViewControllerRepresentable {

    let url: URL

    func makeUIViewController(context: Context) -> QLPreviewController {
        let controller = QLPreviewController()
        controller.dataSource = context.coordinator
        return controller
    }

    func updateUIViewController(
        _ uiViewController: QLPreviewController, context: Context) {}


    func makeCoordinator() -> Coordinator {
        return Coordinator(parent: self)
    }

    class Coordinator: QLPreviewControllerDataSource {

        let parent: MyPreviewController

        init(parent: MyPreviewController) {
            self.parent = parent
        }

        func numberOfPreviewItems(in controller: QLPreviewController) -> Int {
            return 1
        }

        func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {
            print("url is \(parent.url.absoluteString)")
            return parent.url as QLPreviewItem
        }

    }