LONDON-IOS/GMERemittance/Module/SplashScreen/User Interface/View/SplashScreenViewController.swift

//
//  SplashScreenViewController.swift
//  GMERemittance
//
//  Created by gme_2 on 10/09/2018.
//Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit
import Localize_Swift
import DTTJailbreakDetection

class SplashScreenViewController: UIViewController {
  
  private struct StringConstants {
    let descriptionFirst = "hassle_free_transfer_text".localized()
    let descriptionSecond = "connect_local_community_text".localized()
    let descriptionThird = "earn_reward_point_text".localized()
    let loginText = "login_text".localized()
    let newUserText = "new_user_text".localized()
  }
  
  // MARK: IBOutlets
  @IBOutlet private weak var imageViewDotCenter: UIImageView!
  @IBOutlet private weak var imageViewDotLeft: UIImageView!
  @IBOutlet private weak var imageViewDotRight: UIImageView!
  
  @IBOutlet private weak var imageViewHomeLogo: UIImageView!
  @IBOutlet private weak var labelHomeDescription: UILabel!
  
  @IBOutlet private weak var buttonLogin: UIButton!
  @IBOutlet private weak var buttonSignUp: UIButton!
  
  @IBOutlet private weak var languageBackGroundView: UIView!
  @IBOutlet private weak var languageLabel: UILabel!
  
  private var languageTapGuesture: UITapGestureRecognizer?
  // MARK: Properties
  
  private var timer: Timer?
  private var counter: Int = 0
  
  private let imageDotSelected = UIImage(named: "dotSelected")
  private let imageDotUnselected = UIImage(named: "dotUnselected")
  
  private let imageFirst = UIImage(named: "ic_splashFirstScreen")
  private let imageSecond = UIImage(named: "ic_splashSecondScreen")
  private let imageThird = UIImage(named: "ic_splashThirdScreen")
  
  private var languageIndex = 0
  
  private var languages: [SendMoneyCountryViewModel] = []
  private var selectedLanguage: SendMoneyCountryViewModel? {
    didSet {
      let code = Language.init(rawValue: selectedLanguage?.code ?? "en")?.code ?? "en"
      
      Localize.setCurrentLanguage(code)
      UserDefaults.standard.set(code, forKey: AppConstants.firstTimeLanguageIsSet)
      
      setText()
    }
  }
  
  var presenter: SplashScreenModuleInterface?
  
  
  // MARK: VC's Life cycle
  
  override func viewDidLoad() {
    super.viewDidLoad()
    checkJailBreak()
    self.setup()
  }
  
  override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.navigationItem.title = ""
    self.hideNavBar()
    self.setupTimer()
  }
  
  override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    self.navigationItem.title = ""
    self.timer?.invalidate()
    
  }
  
  // MARK: IBActions
  private func checkJailBreak() {
    if (DTTJailbreakDetection.isJailbroken()) {
      self.alert(message: "Your device is jail broken.", title: "Alert!") {
        exit(0)
      }
    }
  }
  
  @IBAction private func login(_ sender: UIButton) {
    self.presenter?.login()
  }
  
  
  @IBAction private func register(_ sender: UIButton) {
    self.presenter?.register()
  }
  
  // MARK: Other Functions
  
  private func hideNavBar() {
    self.navigationController?.isNavigationBarHidden = true
    self.navigationController?.navigationBar.barTintColor = AppConstants.themeRedColor
    self.navigationController?.navigationBar.isTranslucent = false
    self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
    self.navigationController?.navigationBar.shadowImage = UIImage()
  }
  
  private func setup() {
    // all setup should be done here
    hideNavBar()
    setUpButtons()
    imageViewDotLeft.image = UIImage(named: "dotSelected")
    let leftSwipe = UISwipeGestureRecognizer(target: self, action: #selector(_SplashScreenViewController.handleSwipes(_:)))
    let rightSwipe = UISwipeGestureRecognizer(target: self, action: #selector(_SplashScreenViewController.handleSwipes(_:)))
    
    leftSwipe.direction = .left
    rightSwipe.direction = .right
    
    view.addGestureRecognizer(leftSwipe)
    view.addGestureRecognizer(rightSwipe)
    
    setLanguageBackgroundView()
  }
  
  private func setLanguageBackgroundView() {
    let languageSelectionGuesture = UITapGestureRecognizer(target: self, action: #selector(self.showCountryPickerview))
    self.languageBackGroundView.addGestureRecognizer(languageSelectionGuesture)
    
    self.languageBackGroundView.layer.cornerRadius = 10
    self.languageBackGroundView.clipsToBounds = true
    self.languageBackGroundView.layer.addShadow(offset: CGSize.init(width: 2, height: 2))
    NotificationCenter.default.addObserver(self, selector: #selector(setText), name: NSNotification.Name(LCLLanguageChangeNotification), object: nil)
    
    setupLanguages()
    configureLanguage()
    
    // if exist a selected language then don't animate, and put in the selected language into languageLabel
    if let language = UserDefaults.standard.string(forKey: AppConstants.firstTimeLanguageIsSet){
      self.selectedLanguage = self.languages.filter{$0.code?.languageCode == language.languageCode}.first
    } else {
      configureTimer()
    }
  }
  
  @objc private func setText() {
    timer?.invalidate()
    self.buttonLogin.setTitle("login_text".localized(), for: .normal)
    self.buttonSignUp.setTitle("new_user_text".localized(), for: .normal)
    self.languageLabel.text = self.selectedLanguage?.title
    
    setImageandLabels()
  }
  
  private func setupLanguages() {
    self.languages = Utility.getLanguages()
  }
  
  private func configureTimer() {
    let timer = Timer.scheduledTimer(timeInterval: 2, target: self, selector: #selector(self.updateLanguage), userInfo: nil, repeats: true)
    self.timer = timer
  }
  
  private func configureLanguage() {
    self.buttonLogin.setTitle(StringConstants().loginText, for: .normal)
    self.buttonSignUp.setTitle(StringConstants().newUserText, for: .normal)
  }
  
  @objc private func handleSwipes(_ sender: UISwipeGestureRecognizer) {
    if (sender.direction == .right) {
      counter = counter - 1
      if counter < 0 {
        counter = 2
      }
    }
    
    if (sender.direction == .left) {
      counter = counter + 1
      if counter > 2 {
        counter = 0
      }
    }
    setImageandLabels()
  }
  
  @objc private func updateImage() {
    counter += 1
    if counter > 2 {
      counter = 0
    }
    setImageandLabels()
  }
  
  private func setImageandLabels() {
    
    imageViewDotLeft.image = imageDotUnselected
    imageViewDotCenter.image = imageDotUnselected
    imageViewDotRight.image = imageDotUnselected
    
    switch counter {
    case 0:
      imageViewDotLeft.image = imageDotSelected
      imageViewHomeLogo.image = imageFirst
      labelHomeDescription.text = StringConstants().descriptionFirst
    case 1:
      
      imageViewDotCenter.image = imageDotSelected
      imageViewHomeLogo.image = imageSecond
      labelHomeDescription.text = StringConstants().descriptionSecond
    case 2:
      
      imageViewDotRight.image = imageDotSelected
      imageViewHomeLogo.image = imageThird
      labelHomeDescription.text = StringConstants().descriptionThird
    default:
      return
    }
  }
  
  private func setUpButtons() {
    buttonSignUp.layer.cornerRadius = 25
    buttonLogin.backgroundColor = .clear
    buttonLogin.layer.cornerRadius = 25
    buttonLogin.layer.borderWidth = 1
    buttonLogin.layer.borderColor = UIColor.white.cgColor
    buttonSignUp.layer.borderWidth = 1
    buttonSignUp.layer.borderColor = UIColor.white.cgColor
    self.view.backgroundColor = AppConstants.themeRedColor
    self.buttonSignUp.backgroundColor = AppConstants.themeDarkRedColor
    self.buttonLogin.backgroundColor = AppConstants.themeBlueColor
    //        self.buttonSignUp.backgroundColor = AppConstants.themeBlueColor
  }
  
  private func setupTimer() {
    self.timer?.fire()
  }
  
  @objc private func updateLanguage() {
    
    self.changeText(text: self.languages.elementAt(index: self.languageIndex)?.name ?? "")
    if (self.languageIndex + 1) >= (self.languages.count) {
      self.languageIndex = 0
    }else {
      self.languageIndex += 1
    }
  }
  
  private func changeText(text: String) {
    let animation: CATransition = CATransition()
    animation.timingFunction = CAMediaTimingFunction(name:
      kCAMediaTimingFunctionEaseInEaseOut)
    animation.type = kCATransitionPush
    animation.subtype = kCATransitionFromTop
    animation.duration = 0.8
    
    let animation1: CATransition = CATransition()
    animation1.timingFunction = CAMediaTimingFunction(name:
      kCAMediaTimingFunctionEaseInEaseOut)
    animation1.type = kCATransitionFade
    animation1.subtype = kCATransitionReveal
    animation1.duration = 0.8
    languageLabel.layer.add(animation, forKey: kCATransitionPush)
    
    self.languageLabel.text = text
  }
  
  @objc private func showCountryPickerview() {
    setupLanguages()
    let viewcontroller = UIStoryboard.init(name: "CountryPicker", bundle: nil).instantiateViewController(withIdentifier: "CountryPickerViewController") as! CountryPickerViewController
    let data: [SendMoneyCountryViewModel] = self.languages
    viewcontroller.isLanguageSelection = true
    viewcontroller.data = data
    viewcontroller.doneAction = self.countrySelected
    viewcontroller.type = PickerTitle.country
    self.present(viewcontroller, animated: true, completion: nil)
  }
  
  private func countrySelected(models: [SendMoneyCountryViewModel]) {
    self.selectedLanguage = models.first
  }
  
  override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
  }
}

// MARK: SplashScreenViewInterface
extension SplashScreenViewController: SplashScreenViewInterface {
  
}