gistfile1.txt

import Combine
import PDFKit
import SwiftUI

struct ContentView: View {
    @StateObject var manager = PDFManager()
    @Binding var document: PDFTrapperDocument
    @State var showScanner = false
    @State var isEditing = false
    var fileURL: URL?
    
    private func save() {
        document.setAsNotBlank()
        document.saveTrigger.toggle()
    }

    var body: some View {
        ZStack {
            if let url = fileURL {
                QuickLookController(startEditing: manager.startEditMode, url: url) {
                    if let refreshedPDF = PDFDocument(url: url) {
                        document.pdf = refreshedPDF
                        manager.saveReporter.send()
                        isEditing = false
                    }
                }
            }
            if showScanner {
                ScannerView { images in
                    manager.addPhotos(images, toPDFDocument: document)
                    withAnimation {
                        showScanner = false
                    }
                }
            } else {
                if !isEditing {
                    VStack {
                        PDFDisplayView(pdf: document.pdf)
                        Button("Editing Canvas") {
                            isEditing = true
                            DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) {
                                manager.startEditMode.send()
                            }
                        }
                    }
                    .transition(AnyTransition.opacity.animation(.default))
                }
            }
            if isEditing {
                ProgressView()
            }
        }
        .onAppear {
            if document.isBlank {
                showScanner = true
            }
        }
        .onReceive(manager.saveReporter, perform: save)
    }
}