import SwiftUI
import PDFKit
import QuickLook

struct LeadSigningPreviewView: View {
    let offerID: String
    let url: URL
    let placement: PDFSignaturePlacement?
    @State private var showsPreview = false
    @State private var pageNumber = 1
    @State private var pageCount = 1

    var body: some View {
        VStack(alignment: .leading, spacing: 8) {
            HStack {
                Text("VORSCHAU · \(offerID)")
                Spacer()
                Button("In Vorschau öffnen", systemImage: "arrow.up.left.and.arrow.down.right") {
                    showsPreview = true
                }
                .font(.subheadline)
                .foregroundStyle(.tint)
            }
            .font(.caption).foregroundStyle(.secondary).padding(.horizontal, 16)
            LeadPDFView(url: url, signaturePlacement: placement, fitsWholePage: true) { current, total in
                pageNumber = current
                pageCount = total
            }
            .frame(height: 310)
            .clipShape(.rect(cornerRadius: 12))
            .overlay(RoundedRectangle(cornerRadius: 12).stroke(.gray.opacity(0.25)))
            Text("Seite \(pageNumber) von \(pageCount)")
                .font(.caption)
                .foregroundStyle(.secondary)
                .frame(maxWidth: .infinity, alignment: .trailing)
                .padding(.horizontal, 16)
        }
        .fullScreenCover(isPresented: $showsPreview) {
            LeadDocumentPreview(url: url)
        }
    }
}