import UIKit

import SwiftUI
import Foundation
import BioPassID
import React

@objc(FaceSdkReactNative)
class FaceSdkReactNative: RCTEventEmitter {

  var hasListiners = false
    
  override func startObserving() {
    hasListiners = true
  }
  
  override func stopObserving() {
    hasListiners = false
  }
  
  override func supportedEvents() -> [String]! {
    return ["face-sdk-react-native/onFaceCapture", "face-sdk-react-native/onFaceDetected"]
  }
  
  @objc(takeFace:withResolver:withRejecter:)
  func takeFace(
    faceConfig: NSDictionary,
    resolve: @escaping RCTPromiseResolveBlock,
    reject: @escaping RCTPromiseRejectBlock
  ) {
    let config = Utils.dictionaryToFaceConfig(config: faceConfig)
      
    let cameraView = FaceView(
      with: config,
      onFaceCapture: { faceImage, faceAttributes in
        if (config.liveness.enabled) {
          let attributesDictionary = Utils.livenessAttributesToDictionary(attributes: faceAttributes!)
          let onFaceCaptureDictionary = ["image": faceImage.imageBase64, "faceAttributes": attributesDictionary]
          
          if (self.hasListiners) {
            self.sendEvent(withName: "face-sdk-react-native/onFaceCapture", body: onFaceCaptureDictionary)
          }
        } else {
          let onFaceCaptureDictionary = ["image": faceImage.imageBase64, "faceAttributes": nil]
          
          if (self.hasListiners) {
            self.sendEvent(withName: "face-sdk-react-native/onFaceCapture", body: onFaceCaptureDictionary)
          }
        }
      },
      onFaceDetected: { faceAttributes in
        let attributesDictionary = Utils.livenessAttributesToDictionary(attributes: faceAttributes)
        let onFaceDetectedDictionary = ["faceAttributes": attributesDictionary]
        
        if (self.hasListiners) {
          self.sendEvent(withName: "face-sdk-react-native/onFaceDetected", body: onFaceDetectedDictionary)
        }
      }
    )
      
    DispatchQueue.main.async {
      let rootViewController: UIViewController! = UIApplication.shared.delegate?.window??.rootViewController
      
      let contentView = UIHostingController(rootView: cameraView)
      contentView.modalPresentationStyle = .fullScreen
      rootViewController.present(contentView, animated: true, completion: nil)
    }
    
    resolve(nil)
  }
  
  @objc(startRecognition:withResolver:withRejecter:)
  func startRecognition(
    licenseKey: NSString,
    resolve: @escaping RCTPromiseResolveBlock,
    reject: @escaping RCTPromiseRejectBlock
  ) {
    resolve(nil)
  }
  
  @objc(closeRecognition:withRejecter:)
  func closeRecognition(
    resolve: @escaping RCTPromiseResolveBlock,
    reject: @escaping RCTPromiseRejectBlock
  ) {
    resolve(nil)
  }
  
  @objc(extract:withResolver:withRejecter:)
  func extract(
    artifact: NSString,
    resolve: @escaping RCTPromiseResolveBlock,
    reject: @escaping RCTPromiseRejectBlock
  ) {
    resolve(nil)
  }
  
  @objc(verify:withTemplateB:withResolver:withRejecter:)
  func verify(
    templateA: NSString,
    templateB: NSString,
    resolve: @escaping RCTPromiseResolveBlock,
    reject: @escaping RCTPromiseRejectBlock
  ) {
    resolve(nil)
  }
}