LONDON-IOS/GME Remit/Modules/ManageAgreement/User Interface/View/ManageAgreementViewController.swift

//
//  ManageAgreementViewController.swift
//  GME Remit
//
//  Created by InKwon James Kim on 2019/12/23.
//Copyright © 2019 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit
import RxSwift
import RxCocoa

class ManageAgreementViewController: UIViewController {
  
  // MARK: Properties
  var presenter: ManageAgreementPresenter!
  
  private let disposeBag = DisposeBag()
  private var isFirst = true
  private var documents: [AgreePDFDocument]?
  private var titleLabels: [UILabel]?
  // MARK: Computed Properties
  
  // MARK: IBOutlets
  @IBOutlet private weak var agreeButton: UIButton!
  
  @IBOutlet private weak var checkBox: CheckBox!
  @IBOutlet private weak var checkBox2: CheckBox!
  @IBOutlet private weak var checkBox3: CheckBox!
  @IBOutlet private weak var checkBox4: CheckBox!
  @IBOutlet private weak var checkBox5: CheckBox!
  @IBOutlet private weak var checkBox6: CheckBox!
  
  @IBOutlet private weak var titleLabel: UILabel!
  @IBOutlet private weak var infoLabel: UILabel!
  
  @IBOutlet private weak var documentTitleLabel1: UILabel!
  @IBOutlet private weak var documentTitleLabel2: UILabel!
  @IBOutlet private weak var documentTitleLabel3: UILabel!
  @IBOutlet private weak var documentTitleLabel4: UILabel!
  @IBOutlet private weak var documentTitleLabel5: UILabel!
  @IBOutlet private weak var documentTitleLabel6: UILabel!
  
  // MARK: VC's Life cycle
  override func viewDidLoad() {
    super.viewDidLoad()
    setup()
  }
  
  override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    title = "terms_and_conditions_text".localized()
    
    setupNormalNavigation()
  }
  
  override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    if isFirst {
      checkBox.isSelected = true
      checkBox2.isSelected = true
      checkBox3.isSelected = true
      checkBox4.isSelected = true
      checkBox5.isSelected = true
      checkBox6.isSelected = true
      
      isFirst = false
    }
  }
  
  override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    title = ""
  }
  
  // MARK: IBActions
  @IBAction func touchDetail(_ sender: UIButton) {
    guard
      let doc = documents?.first(where: {$0.id == "\(sender.tag)"}),
      let url = doc.url,
      let titleLabel = titleLabels?.first(where: {$0.tag == sender.tag}),
      let title = titleLabel.text
    else {
        alert(type: .error, message: "PDF URL is wrong.")
        return
      }
    
    let detailVC = PDFViewController(nibName: "PDFViewController", bundle: nil)
    let configure = PDFConfiguration(
      title: title,
      url: url
    )
    
    detailVC.showAsPush(self, configure: configure)
  }
}

// MARK: Other Functions
extension ManageAgreementViewController {
  
  private func setup() {
    setUI()
    setBinding()
    setUIBinding()
  }
  
  private func setUI() {
    agreeButton.layer.cornerRadius = 5
    
    infoLabel.setLineSpacing(lineSpacing: 5)

    if self.presentingViewController == nil {
      navigationItem.hidesBackButton = true
      
      let newBackButton = UIBarButtonItem(
        image: UIImage(named: "backIconBlack"),
        style: .plain,
        target: self,
        action: #selector(back(sender:))
      )
      
      navigationItem.leftBarButtonItem = newBackButton
    } else {
      let closeButton = UIBarButtonItem(
        image: UIImage(named: "ic_cancel"),
        style: .plain,
        target: self,
        action: #selector(close)
      )
      
      navigationItem.leftBarButtonItem = closeButton
    }
    
    titleLabels = [
      documentTitleLabel1, documentTitleLabel2, documentTitleLabel3,
      documentTitleLabel4, documentTitleLabel5, documentTitleLabel6
    ]
    
    setMultiLanguages()
  }
  
  private func setUIBinding() {
    Observable.combineLatest([
      checkBox.rx.isSelected,
      checkBox2.rx.isSelected,
      checkBox3.rx.isSelected,
      checkBox4.rx.isSelected,
      checkBox5.rx.isSelected,
      checkBox6.rx.isSelected
    ]).map { $0.allSatisfy { $0 } }
      .asDriverOnErrorJustComplete().drive(onNext: {[weak self] isEnable in
        self?.agreeButton.isEnabled = isEnable
        self?.agreeButton.backgroundColor = isEnable ? .themeRed : .lightGray
      }).disposed(by: disposeBag)
  }

  private func setBinding() {
    let agreement = Observable.combineLatest([
      checkBox.rx.isSelected,
      checkBox2.rx.isSelected,
      checkBox3.rx.isSelected,
      checkBox4.rx.isSelected,
      checkBox5.rx.isSelected,
      checkBox6.rx.isSelected
    ]).map {$0.allSatisfy {$0}}
    
    let viewWillAppear = rx.sentMessage(#selector(UIViewController.viewWillAppear(_:))).mapToVoid()
    
    let input = ManageAgreementPresenter.Input(
      viewWillAppear: viewWillAppear,
      agreement: agreement,
      submit: agreeButton.rx.tap.mapToVoid()
    )
    let output = presenter.transform(input: input)

    output.isError
    .drive(
      onNext: { self.alert(type: .error, message: $0.localizedDescription) }
    ).disposed(by: disposeBag)
    
    output.isProgress
    .drive(
      onNext: { $0 ? self.showProgressHud() : self.hideProgressHud() }
    ).disposed(by: disposeBag)
    
    output.documents.subscribe(onNext: {[weak self] in
      self?.documents = $0
    }).disposed(by: disposeBag)
  }
  
  @objc private func back(sender: UIBarButtonItem) {
    navigationController?.popToRootViewController(animated: true)
  }
  
  @objc private func close() {
    dismiss(animated: true, completion: nil)
  }
  
  private func setMultiLanguages() {
    titleLabel.text = "terms_and_conditions_title_text".localized()
    infoLabel.text = "terms_and_conditions_content_text".localized()
    
    documentTitleLabel1.text = "personal_info_treatment_policy_text".localized()
    documentTitleLabel2.text = "personal_info_usesage_text".localized()
    documentTitleLabel3.text = "agreement_legal_text".localized()
    documentTitleLabel4.text = "small_scale_amount_text".localized()
    documentTitleLabel5.text = "openbanking_service_text".localized()
    documentTitleLabel6.text = "eletronic_finance_text".localized()
    
    agreeButton.setTitle("agree_text".localized(), for: .normal)
  }
}

// MARK: CheckBoxDelegate
extension ManageAgreementViewController: CheckBoxDelegate {
  func checkBox(_ checkBox: CheckBox, isSelected: Bool) {
    
  }
}