LONDON-IOS/GMERemittance/Module/AddReciepient/User Interface/View/AddReciepientViewController.swift

//
//  AddReciepientViewController.swift
//  GMERemittance
//
//  Created by gme_2 on 26/08/2018.
//Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit
import IQKeyboardManagerSwift

class AddReciepientViewController: UIViewController {
  
  private struct StringConstants {
    let headerText = "who_to_send_text".localized()
    let firstNameText = "first_name_text".localized()
    let middleNameText = "enter_receiver_middlename_text".localized()
    let lastNameText = "last_name_text".localized()
    let countryNameText = "country_text".localized()
    let stateText = "state_text".localized()
    let districtText = "district_text".localized()
    let addressText = "address_text".localized()
    let relationText = "relation_text".localized()
    let mobileText = "mobile_number_text".localized()
    let transferText = "transfer_reason_text".localized()
    let saveText = "save_text".localized()
    let addRecipientTitle = "add_recipient_text".localized()
    // placeholder
    let firstnamePlaceholder = "placeholder_enter_receiver_firstname_text".localized()
    let lastnamePlaceholder = "placeholder_enter_receiver_lastname_text".localized()
    let middlenamePlaceholder = "placeholder_enter_receiver_middle_text".localized()
    let countryPlaceholder = "placeholder_select_country_text".localized()
    let statePlaceholder = "state_placeholder_text".localized()
    let districtPlaceholder = "district_placeholder_text".localized()
    let addressPlaceholder = "placeholder_enter_receiver_address_text".localized()
    let relationPlaceholder = "placeholder_select_relation_text".localized()
    let mobilePlaceholder = "placeholder_enter_reciever_mobile_number_text".localized()
    let transferPlaceholder = "placeholder_select_transfer_reason_text".localized()
  }
  
  // MARK: IBOutlets
  @IBOutlet private weak var scrollView: UIScrollView!
  
  @IBOutlet private weak var firstNameTextField: UITextField!
  @IBOutlet private weak var middleNameTextField: UITextField!
  @IBOutlet private weak var lastNameTextField: UITextField!
  @IBOutlet private weak var countryTextField: UITextField!
  @IBOutlet private weak var stateProvinceTextField: UITextField!
  @IBOutlet private weak var districtTextField: UITextField!
  @IBOutlet private weak var addressTextField: UITextField!
  @IBOutlet private weak var relationTextField: UITextField!
  @IBOutlet private weak var mobileTextField: UITextField!
  @IBOutlet private weak var emailTextField: UITextField!
  @IBOutlet private weak var transferReasonTextField: UITextField!
  @IBOutlet private weak var saveButton: UIButton!
  @IBOutlet private weak var provienceStackView: UIStackView!
  @IBOutlet private weak var districtStackView: UIStackView!
  
  // titles
  @IBOutlet private weak var headerTItleLabel: UILabel!
  @IBOutlet private weak var firstNameTitleLabel: UILabel!
  @IBOutlet private weak var middleNameTitleLabel: UILabel!
  @IBOutlet private weak var lastNametitleLabel: UILabel!
  @IBOutlet private weak var countryNameTitleLabel: UILabel!
  @IBOutlet private weak var stateTitleLabel: UILabel!
  @IBOutlet private weak var districtTitleLabel: UILabel!
  @IBOutlet private weak var addressTitleLabel: UILabel!
  @IBOutlet private weak var relationTitleLabel: UILabel!
  @IBOutlet private weak var mobileTitleLabel: UILabel!
  @IBOutlet private weak var transferTitleLabel: UILabel!
  
  
  // MARK: Properties
  var presenter: AddReciepientModuleInterface?
  
  private var countries: [SendMoneyCountryViewModel]?
  private var transferReasons: [SendMoneyTransferReasonViewModel]?
  private var relations: [SendMoneyRelationViewModel]?
  private var reciepient: ReceipientViewModel?
  
  private var selectedCountry: SendMoneyCountryViewModel? {
    didSet {
      self.countryTextField.text = selectedCountry?.name
      let shouldShowProvienceField = (selectedCountry?.proviencesRequired ?? "" ) == "true"
      self.provienceStackView.isHidden = !shouldShowProvienceField
      self.districtStackView.isHidden = !shouldShowProvienceField
      self.reciepient?.countryId = self.selectedCountry?.id
    }
  }
  
  private var selectedProvience: SendMoneyProvienceViewModel? {
    didSet {
      self.stateProvinceTextField.text = selectedProvience?.name
      self.reciepient?.stateId = self.selectedProvience?.id
    }
  }
  
  private var selectedDistrict: SendMoneyDistrictViewModel? {
    didSet {
      self.districtTextField.text = selectedDistrict?.name
      self.reciepient?.districtId = self.selectedDistrict?.id
    }
  }
  
  private var selectedRelation: SendMoneyRelationViewModel? {
    didSet {
      self.relationTextField.text = selectedRelation?.title
      self.reciepient?.relationId = self.selectedRelation?.id
    }
  }
  
  private var selectedTransferReason: SendMoneyTransferReasonViewModel? {
    didSet {
      self.transferReasonTextField.text = selectedTransferReason?.title
      self.reciepient?.reasonId = selectedTransferReason?.id
    }
  }
  
  
  // MARK: VC's Life cycle
  
  override func viewDidLoad() {
    super.viewDidLoad()
    self.setup()
    self.setupDelegates()
    self.setupTargets()
    self.reciepient = ReceipientViewModel()
    self.presenter?.viewIsReady()
  }
  
  override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.navigationItem.title = StringConstants().addRecipientTitle
  }
  
  // Trying to show keyboard from viewDidLoad where the view might not be loaded fully.
  // So try to move becomeFirstResponse related code to viewDidAppear where view loaded fully.
  override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    self.firstNameTextField.becomeFirstResponder()
  }
  
  override func viewWillDisappear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.navigationItem.title = ""
  }
  
  // MARK: IBActions
  
  @IBAction private func save(_ sender: UIButton) {
    if let reciepient = self.reciepient {
      self.presenter?.save(model: reciepient)
    }
  }
  // MARK: Other Functions
  
  private func setTextField(){
    self.firstNameTextField.keyboardType = .asciiCapable
    self.firstNameTextField.returnKeyType = .next
    self.firstNameTextField.autocorrectionType = .no
    
    self.middleNameTextField.keyboardType = .asciiCapable
    self.middleNameTextField.returnKeyType = .next
    self.middleNameTextField.autocorrectionType = .no
    
    self.lastNameTextField.keyboardType = .asciiCapable
    self.lastNameTextField.returnKeyType = .next
    self.lastNameTextField.autocorrectionType = .no
    
    self.addressTextField.keyboardType = .asciiCapable
    self.addressTextField.returnKeyType = .next
    self.addressTextField.autocorrectionType = .no
    
  }

  private func setup() {
    // all setup should be done here
    self.setupNavigation()
    self.configureView()
    self.configureLanguage()
    self.setTextField()
    
    
  }
  
  private func configureLanguage() {
    self.headerTItleLabel.text = StringConstants().headerText
    self.firstNameTitleLabel.text = StringConstants().firstNameText
    self.middleNameTitleLabel.text = StringConstants().middleNameText
    self.lastNametitleLabel.text = StringConstants().lastNameText
    self.countryNameTitleLabel.text = StringConstants().countryNameText
    self.stateTitleLabel.text = StringConstants().stateText
    self.districtTitleLabel.text = StringConstants().districtText
    self.addressTitleLabel.text = StringConstants().addressText
    self.relationTitleLabel.text = StringConstants().relationText
    self.mobileTitleLabel.text = StringConstants().mobileText
    self.transferTitleLabel.text = StringConstants().transferText
    saveButton.setTitle(StringConstants().saveText, for: .normal)
    
    // placeholders
    
    self.firstNameTextField.placeholder = StringConstants().firstnamePlaceholder
    self.middleNameTextField.placeholder = StringConstants().middlenamePlaceholder
    self.lastNameTextField.placeholder = StringConstants().lastnamePlaceholder
    self.countryTextField.placeholder = StringConstants().countryPlaceholder
    self.stateProvinceTextField.placeholder = StringConstants().statePlaceholder
    self.districtTextField.placeholder = StringConstants().districtPlaceholder
    self.addressTextField.placeholder = StringConstants().addressPlaceholder
    self.relationTextField.placeholder = StringConstants().relationPlaceholder
    self.mobileTextField.placeholder = StringConstants().mobilePlaceholder
    self.transferReasonTextField.placeholder = StringConstants().transferPlaceholder
  }
  
  private func configureView() {
    self.provienceStackView.isHidden = true
    self.districtStackView.isHidden = true
  }
  
  private func setupDelegates() {
    self.countryTextField.delegate = self
    self.stateProvinceTextField.delegate = self
    self.districtTextField.delegate = self
    self.relationTextField.delegate = self
    self.transferReasonTextField.delegate = self
    
    self.firstNameTextField.delegate = self
    self.middleNameTextField.delegate = self
    self.lastNameTextField.delegate = self
    self.countryTextField.delegate = self
    self.stateProvinceTextField.delegate = self
    self.districtTextField.delegate = self
    self.addressTextField.delegate = self
    self.relationTextField.delegate = self
    self.mobileTextField.delegate = self
    
  }
  
  private func setupTargets() {
    [firstNameTextField, middleNameTextField, lastNameTextField, countryTextField, stateProvinceTextField, districtTextField, addressTextField, relationTextField, mobileTextField, emailTextField, transferReasonTextField].forEach({
      $0.addTarget(self, action: #selector(self.textFieldChanged(sender:)), for: UIControlEvents.editingChanged)
    })
  }
  
  @objc private func textFieldChanged(sender: UITextField) {
    switch sender {
    case firstNameTextField:
      self.reciepient?.firstName = firstNameTextField.text!
    case middleNameTextField:
      self.reciepient?.middleName = middleNameTextField.text!
    case lastNameTextField:
      self.reciepient?.lastName = lastNameTextField.text!
    case addressTextField:
      self.reciepient?.address = addressTextField.text!
    case mobileTextField:
      self.reciepient?.mobileNumber = mobileTextField.text!
    case emailTextField:
      self.reciepient?.email = emailTextField.text!
    default:
      break
    }
  }
  
  private func setupNavigation() {
    self.navigationItem.backBarButtonItem?.image =
      #imageLiteral(resourceName: "backIconBlack")
    self.navigationController?.navigationBar.tintColor = UIColor.black
  }
  
  private func showCountryPickerview() {
    let viewcontroller = UIStoryboard.init(name: "CountryPicker", bundle: nil).instantiateViewController(withIdentifier: "CountryPickerViewController") as! CountryPickerViewController
    viewcontroller.data = self.countries ?? []
    viewcontroller.doneAction = self.countrySelected
    viewcontroller.defaultSelectedData = [self.selectedCountry]
    viewcontroller.type = PickerTitle.country
    self.present(viewcontroller, animated: true, completion: nil)
  }
  
  private func getPickerViewController()-> ItemsPickerViewController  {
    return UIStoryboard.init(name: "ItemsPicker", bundle: nil).instantiateViewController(withIdentifier: "ItemsPickerViewController") as! ItemsPickerViewController
  }
  
  private func showProviencePickerview() {
    let viewcontroller = self.getPickerViewController()
    let proviences = self.selectedCountry?.proviences ?? []
    let names = proviences.compactMap({$0.name})
    viewcontroller.data = names
    viewcontroller.type = PickerTitle.state
    viewcontroller.doneAction = self.provienceSelected
    viewcontroller.defaultSelectedData = [self.selectedProvience?.name ?? ""]
    self.present(viewcontroller, animated: true, completion: nil)
  }
  
  private func showDistrictPickerview() {
    let viewcontroller = self.getPickerViewController()
    let districts = self.selectedProvience?.districts ?? []
    let names = districts.compactMap({$0.name})
    viewcontroller.data = names
    viewcontroller.type = PickerTitle.district
    viewcontroller.doneAction = self.districtSelected
    viewcontroller.defaultSelectedData = [self.selectedDistrict?.name ?? ""]
    self.present(viewcontroller, animated: true, completion: nil)
  }
  
  private func showRelationPickerView() {
    let viewcontroller = self.getPickerViewController()
    let relations = self.relations ?? []
    let names = relations.compactMap({$0.title})
    viewcontroller.data = names
    viewcontroller.type = PickerTitle.relation
    viewcontroller.doneAction = self.relationSelected
    viewcontroller.defaultSelectedData = [self.selectedRelation?.title ?? ""]
    self.present(viewcontroller, animated: true, completion: nil)
  }
  
  private func showTransferReasonPickerView() {
    let viewcontroller = self.getPickerViewController()
    let transferReasons = self.transferReasons ?? []
    let names = transferReasons.compactMap({$0.title})
    viewcontroller.data = names
    viewcontroller.type = PickerTitle.transferReasons
    viewcontroller.doneAction = self.transferReasonSelected
    viewcontroller.defaultSelectedData = [self.selectedTransferReason?.title ?? ""]
    self.present(viewcontroller, animated: true, completion: nil)
  }
  
  private func transferReasonSelected(reasons: [String]) {
    let _reason = self.transferReasons?.filter({($0.title ?? "") == (reasons.first ?? "") }).first
    self.selectedTransferReason = _reason
  }
  
  private func relationSelected(relations: [String]) {
    let _relations = self.relations?.filter({($0.title ?? "") == (relations.first ?? "") }).first
    self.selectedRelation = _relations
    mobileTextField.becomeFirstResponder()
  }
  
  private func districtSelected(district: [String]) {
    let _district = (self.selectedProvience?.districts ?? []).filter({
      ( $0.name ?? "" ) == ( district.first ?? "" )
    }).first
    self.selectedDistrict = _district
    
  }
  
  private func provienceSelected(provience: [String]) {
    let _provience = (self.selectedCountry?.proviences ?? []).filter({
      ($0.name ?? "") == (provience.first ?? "")
    })
    self.selectedProvience = _provience.first
  }
  
  private func countrySelected(models: [SendMoneyCountryViewModel]) {
    self.selectedCountry = models.first
    self.addressTextField.becomeFirstResponder()
  }
  
  internal func showLoading() {
    self.showProgressHud()
  }
  
  internal func hideLoading() {
    self.hideProgressHud()
  }
  
  internal func show(error: String) {
    self.alert(message: error)
  }
}

// MARK: AddReciepientViewInterface
extension AddReciepientViewController: AddReciepientViewInterface {
  func show(countries: [SendMoneyCountryViewModel]) {
    self.countries = countries
  }
  
  func show(transferReasons: [SendMoneyTransferReasonViewModel]) {
    self.transferReasons = transferReasons
  }
  
  func show(relations: [SendMoneyRelationViewModel]) {
    self.relations = relations
  }
}


extension AddReciepientViewController: UITextFieldDelegate {
  func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
    switch textField {
    case countryTextField:
      showCountryPickerview()
      return false
    case stateProvinceTextField:
      self.showProviencePickerview()
      return false
    case districtTextField:
      self.showDistrictPickerview()
      return false
    case relationTextField:
      self.showRelationPickerView()
      return false
    case transferReasonTextField:
      self.showTransferReasonPickerView()
      return false
    default:
      return true
    }
  }
  
  func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    switch textField {
    case firstNameTextField:
      firstNameTextField.resignFirstResponder()
      middleNameTextField.becomeFirstResponder()
    case middleNameTextField:
      middleNameTextField.resignFirstResponder()
      lastNameTextField.becomeFirstResponder()
    case lastNameTextField:
      lastNameTextField.resignFirstResponder()
      countryTextField.becomeFirstResponder()
    case addressTextField:
      addressTextField.resignFirstResponder()
      relationTextField.becomeFirstResponder()
      
    default:
      break
    }
    return false
  }
}