//
//  RegisterViewController.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

class RegisterViewController: UIViewController {
  
  struct StringConstants {
    let userIdTitle = "userid_title_text".localized()
    let useridPlaceholder = "userid_placeholder_text".localized()
    let useridError = "userid_error_text".localized()

    let passwordTitle = "password_text".localized()
    let passwordPlaceholder = "password_policy_error".localized()
    let passwordError = "password_policy_error".localized()
    
    let confirmPasswordTitle = "confirm_password_text".localized()
    let confirmPasswordPlaceholder = "confirm_password_text".localized()
    
    let dobTitlePlaceholder = "dob_text".localized()
    let alreadyHaveAccountText = "already_have_account_text".localized()
    let loginText = "login_text".localized()
    let registerText = "register_text".localized()
    let registerHeader = "register_title_text".localized()
    let registerSubtitle = "register_subtitle_text".localized()
    
    let mobileNumber = "mobile_number_text".localized()
    let mobilePlaceholder = "010xxxxxxxx"//"mobile_number_placeholder_text".localized()
    
    let nativeCountry = "native_country_text".localized()
    let nativeCountryPlaceholder = "native_country_placeholder_text".localized()
    
    let nativeCountryError = "kyc_native_country_error".localized()
    let mobileNumberError = "kyc_mobile_invalid_number_error".localized()
  }
  
  // MARK: IBOutlets
  
  @IBOutlet weak var idTextField: ValidationTextField!
  @IBOutlet weak var passwordTextField: ValidationTextField!
  @IBOutlet weak var nativeCountryTextField: ValidationTextField!
  @IBOutlet weak var mobileTextField: ValidationTextField!
  
  // header labels
  @IBOutlet weak var headerLabel: UILabel!
  @IBOutlet weak var alreadyHaveAccountLabel: UILabel!
  
  // buttons
  @IBOutlet weak var loginButton: UIButton!
  @IBOutlet weak var registerButton: UIButton!
  
  // MARK: Properties
  var presenter: RegisterModuleInterface?
  
  private var encryptedPassword: String = ""
  
  private lazy var countries = StaticModels().nativeCountries
  private var validDic = [
    "id": false,
    "password": false,
    "country": false,
    "mobile": false
  ]
  
  private var selectedNativeCountry: NativeCountryModel? {
    didSet {
      nativeCountryTextField.text = selectedNativeCountry?.text
      nativeCountryTextField.sendActions(for: .editingChanged)
    }
  }
  
  private var isValid = false {
    didSet {
      registerButton.isEnabled = isValid
      registerButton.backgroundColor = isValid ? .themeRed : .lightGray
    }
  }
  
  private var isNotDuplicate = true {
    didSet {
      idTextField.sendActions(for: .editingChanged)
    }
  }
  
  // MARK: VC's Life cycle
  
  override func viewDidLoad() {
    super.viewDidLoad()
    self.setup()
    
    idTextField.delegate = self
    
  }
  
  override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.setupPicturedNavBar()
  }
  
  override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    self.navigationItem.title = ""
  }
  
  // MARK: IBActions
  
  @IBAction func login(_ sender: UIButton) {
    self.presenter?.login()
  }
  
  @IBAction func register(_ sender: UIButton) {
    let model = RegisterRequestModel()
    model.username = idTextField.text
    model.encryptedPassword = encryptedPassword
    model.nativeCountry = selectedNativeCountry?.id
    model.mobileNumber = mobileTextField.text
    
    self.presenter?.register(model: model)
  }
  
  // MARK: Other Functions
  
  private func setup() {
    // all setup should be done here
    setupPicturedNavBar()
    configureLanguage()
    
    passwordTextField.delegate = self
    nativeCountryTextField.delegate = self
    
    setCustomTextFields()
    
    removeNonASCII(
      textFields: [
        idTextField,
        passwordTextField,
        nativeCountryTextField,
        mobileTextField
      ]
    )
    
    registerButton.layer.cornerRadius = 5
  }
  
  private func setCustomTextFields() {
    passwordTextField.inputView = UIView()
    passwordTextField.keyboardToolbar.isHidden = true
    
    nativeCountryTextField.inputView = UIView()
    nativeCountryTextField.keyboardToolbar.isHidden = true
  }
  
  private func configureLanguage() {
    headerLabel.text = StringConstants().registerHeader
    alreadyHaveAccountLabel.text = StringConstants().alreadyHaveAccountText
    
    idTextField.titleText = StringConstants().userIdTitle
    idTextField.placeholder = StringConstants().useridPlaceholder
    idTextField.errorMessage = StringConstants().useridError
    idTextField.validCondition = {3 < $0.count && $0.count < 51 && self.isNotDuplicate}
    
    passwordTextField.titleText = StringConstants().passwordTitle
    passwordTextField.placeholder = StringConstants().passwordPlaceholder
    passwordTextField.errorMessage = StringConstants().passwordError
    passwordTextField.validCondition = { $0.count > 5 }
    
    nativeCountryTextField.titleText = StringConstants().nativeCountry
    nativeCountryTextField.placeholder = StringConstants().nativeCountryPlaceholder
    nativeCountryTextField.errorMessage = StringConstants().nativeCountryError
    nativeCountryTextField.validCondition = { !$0.isEmpty }
    
    mobileTextField.titleText = StringConstants().mobileNumber
    mobileTextField.placeholder = StringConstants().mobilePlaceholder
    mobileTextField.errorMessage = StringConstants().mobileNumberError
    mobileTextField.validCondition = { $0.count > 9 && $0.count < 12}
    
    loginButton.setTitle(StringConstants().loginText, for: .normal)
    registerButton.setTitle(StringConstants().registerText, for: .normal)
  }
  
  private func showCountryPickerview() {
    TablePresenterWireframe().openWith(
      tag: 0,
      delegate: self,
      model: countries,
      source: self
    )
  }
  
  private func removeNonASCII(textFields: [UITextField]) {
    textFields.forEach {
      $0.addTarget(self, action: #selector(editingChanged(_:)), for: .editingChanged)
    }
  }
  
  @objc private func editingChanged(_ textField: UITextField) {
    guard let tf = textField as? ValidationTextField else {return}
    
    switch tf {
    case idTextField:
      textField.removeNonASCII()
      idTextField.filterForUserIDFormat()
      idTextField.errorMessage = StringConstants().useridError
      validDic["id"] = tf.isValid
    case passwordTextField:
      validDic["password"] = tf.isValid
    case nativeCountryTextField:
      textField.removeNonASCII()
      validDic["country"] = tf.isValid
    case mobileTextField:
      textField.removeNonASCII()
      validDic["mobile"] = tf.isValid
    default:
      break
    }
    
    isValid = validDic.allSatisfy { $0.value }
  }
}

// MARK: RegisterViewInterface
extension RegisterViewController: RegisterViewInterface {
  func showLoading() {
    self.showProgressHud()
  }
  
  func hideLoading() {
    self.hideProgressHud()
  }
  
  func show(error: String) {
    self.alert(type: .error, message: error)
  }
  
  func show(message: String) {
    self.alertWithOk(
      type: .success,
      message: message,
      title: "Success",
      okTitle: "Ok"
    ) {
      GMEDB.shared.user.set(self.selectedNativeCountry?.code, .countryCode)
      GMEDB.shared.user.set(self.mobileTextField.text, .mobileNumber)
      
      guard let id = self.idTextField.text else {
        return
      }
      GMEDB.shared.user.set(id, .userId)
      
      KeyChain.shared.save(data: id, key: .temporaryID)
      KeyChain.shared.save(data: self.encryptedPassword, key: .temporaryPW)
      self.presenter?.showKyc()
    }
  }
  
  func isNotDuplicate(_ bool: Bool, _ message: String?) {
    isNotDuplicate = bool
    idTextField.errorMessage = bool ? StringConstants().useridError : message ?? "duplicated id"
  }
}

// MARK: - UITextFieldDelegate
extension RegisterViewController: UITextFieldDelegate {
  func textFieldDidBeginEditing(_ textField: UITextField) {
    switch textField {
    case idTextField:
      isNotDuplicate = true
    case passwordTextField:
      let secureKeypad = SecureKeypad(target: self)
      secureKeypad.delegate = self
      secureKeypad.present(animated: true)
      
    case nativeCountryTextField:
      showCountryPickerview()
    default: ()
      
    }
  }
  
  func textFieldDidEndEditing(_ textField: UITextField) {
    if textField == idTextField {
      let text = textField.text ?? ""
      if text.count > 3 && text.count < 51 {
        presenter?.isDuplicate(userName: text)
      }
    }
  }
}

// MARK: - SecureKeypadDelegate
extension RegisterViewController: SecureKeypadDelegate {
  func didComplete(_ encryptedString: String, garbagePassword: String, length: Int) {
    encryptedPassword = encryptedString
    passwordTextField.text = garbagePassword
    passwordTextField.sendActions(for: .editingChanged)
  }
}

// MARK: - TablePresenterDelegate
extension RegisterViewController: TablePresenterDelegate {
  func tablePresenterView(_ viewController: TablePresenterViewController) -> TablePresenterConfiguration {
    return TablePresenterConfiguration(
      presenterTitle: "select_country_text".localized(),
      closeButtonTitle: "cancel_text".localized(),
      notFoundTitle: "no_result_found_text".localized(),
      searchBarPlaceHolder: "search_country_text".localized()
    )
  }
  
  func tablePresenterView(
    _ viewController: TablePresenterViewController,
    didSelectModel model: TablePresenterProtocol?
  ) {
    selectedNativeCountry = (model as? NativeCountryModel) ?? selectedNativeCountry
  }
}