self/app/ios/MRZScannerModule.swift

//
//  MRZScannerModule.swift
//  ProofOfPassport
//
//  Created by Rémi Colin on 27/02/2024.
//

import Foundation
import React
import SwiftUI

@objc(MRZScannerModule)
class MRZScannerModule: NSObject, RCTBridgeModule {
  static func moduleName() -> String! {
    return "MRZScannerModule"
  }

  static func requiresMainQueueSetup() -> Bool {
    return true
  }
  
  @objc func startScanning(_ resolve: @escaping RCTPromiseResolveBlock, rejecter reject: @escaping RCTPromiseRejectBlock) {
      DispatchQueue.main.async {
          guard let rootViewController = UIApplication.shared.keyWindow?.rootViewController else {
              reject("error", "Unable to find root view controller", nil)
              return
          }
          
          var hostingController: UIHostingController<ScannerWithInstructions>? = nil
          var scannerView = QKMRZScannerViewRepresentable()
          scannerView.onScanResult = { scanResult in
              let resultDict: [String: Any] = [
                  "documentNumber": scanResult.documentNumber,
                  "expiryDate": scanResult.expiryDate?.description ?? "",
                  "birthDate": scanResult.birthdate?.description ?? ""
              ]
              resolve(resultDict)
              
              // Dismiss the hosting controller after scanning
              hostingController?.dismiss(animated: true, completion: nil) 
          }
          
          // Wrap the scanner view and instruction text in a new SwiftUI view
          let scannerWithInstructions = ScannerWithInstructions(scannerView: scannerView)
          hostingController = UIHostingController(rootView: scannerWithInstructions)
          rootViewController.present(hostingController!, animated: true, completion: nil)
      }
  }

  @objc func stopScanning(_ resolve: RCTPromiseResolveBlock, rejecter reject: RCTPromiseRejectBlock) {
    // Logic to stop scanning
    resolve("Scanning stopped")
  }
}
// Define a new SwiftUI view that includes the scanner and instruction text
struct ScannerWithInstructions: View {
    var scannerView: QKMRZScannerViewRepresentable
    
    var body: some View {
        VStack {
            scannerView
            Text("Avoid glare or reflections during scanning.")
                .font(.title3)
                .padding()
                .multilineTextAlignment(.center)
        }
    }
}