//
//  AddAccountViewController.swift
//  GME Remit
//
//  Created by InKwon Devik Kim on 12/04/2019.
//Copyright © 2019 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit
import RxSwift
import RxCocoa

class AddAccountViewController: UIViewController {
  
  // MARK: Properties
  
  var presenter: AddAccountModuleInterface?
  
  private var selectedLanguage: KftcLanguage?
  private var selectedBank: BankInformation?
  
  private let disposeBag = DisposeBag()
  
  private lazy var languagePickerView = UIPickerView()
  private lazy var bankPickerView = UIPickerView()
  
  private var validDic = [
    "bank": false,
    "account": false,
    "language": false
  ]
  
  private var isValid = false {
    didSet {
      verifyAccountButton.isEnabled = isValid
      verifyAccountButton.backgroundColor = isValid ? .themeRed : .lightGray
    }
  }
  
  private var banks: [String]? = ["--- Select Bank ---"]
  private var languages: [String]? = ["--- Select Language ---"]
  
  private var model: (bankList: [BankInformation]?, kftcModel: KFTCModel?) {
    didSet {
      let bankConfigure = TablePresenterConfiguration(presenterTitle: "Select Bank")
      bankNameTextField.useAsDropDown(with: bankConfigure, items: model.bankList)
      
      let languageConfigure = TablePresenterConfiguration(presenterTitle: "Select Bank")
      languageTextField.useAsDropDown(with: languageConfigure, items: model.kftcModel?.languages)
    }
  }
  
  // MARK: IBOutlets
  
  @IBOutlet private weak var bankNameTextField: ValidationTextField!
  @IBOutlet private weak var accountTextField: ValidationTextField!
  @IBOutlet private weak var languageTextField: ValidationTextField!
  @IBOutlet private weak var verifyAccountButton: UIButton!
  
  @IBOutlet weak var closeButton: UIBarButtonItem!
  @IBOutlet weak var titleInfoLabel: UILabel!
  // MARK: VC's Life cycle
  
  override func viewDidLoad() {
    super.viewDidLoad()
    setup()
    
    bankNameTextField.selectedItem.map {$0 as? BankInformation}.asDriverOnErrorJustComplete()
      .drive(onNext: {[weak self] in
        self?.selectedBank = $0
        self?.bankNameTextField.setBank(with: $0?.bankCode)
    }).disposed(by: disposeBag)
    
    languageTextField.selectedItem.map {$0 as? KftcLanguage}.asDriverOnErrorJustComplete()
      .drive(onNext: {[weak self] in
        self?.selectedLanguage = $0
    }).disposed(by: disposeBag)
  }
  
  override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    title = "add_auto_debit_account_text".localized()
    setupNormalNavigation()
  }
  
  override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
  }
  
  override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    title = ""
    
    view.endEditing(true)
  }
  
  // MARK: IBActions
  
  @IBAction private func verifyAccountButtonTouch(_ sender: UIButton) {
    presenter?.verifyAccount(
      customerID: GMEDB.shared.user.string(.senderId) ?? "", // senderID
      bankCode: selectedBank?.bankCode ?? "",
      accountNumber: accountTextField.text ?? "")
  }
  
  @IBAction private func closeButtonTouch(_ sender: UIBarButtonItem) {
    dismiss(animated: true, completion: nil)
  }
  
  // MARK: Other Functions
  
  private func setup() {
    // all setup should be done here
    
    presenter?.viewIsReady()
    verifyAccountButton.layer.cornerRadius = 5
    setValidTextField()
    setMultilanguage()
  }
  
  private func setValidTextField() {
    bankNameTextField.addTarget(self, action: #selector(textFieldDidChange(_:)), for: .editingChanged)
    
    languageTextField.addTarget(self, action: #selector(textFieldDidChange(_:)), for: .editingChanged)
    
    accountTextField.addTarget(self, action: #selector(self.textFieldDidChange(_:)), for: .editingChanged)
    
    accountTextField.validCondition = {$0.count > 9}
    languageTextField.validCondition = {$0.count > 1}
    bankNameTextField.validCondition = {$0.count > 1}
  }
  
  @objc
  func textFieldDidChange(_ textfield: UITextField) {
    guard let tf = textfield as? ValidationTextField else { return }
    
    switch tf {
    case bankNameTextField:
      validDic["bank"] = tf.isValid
    case accountTextField:
      validDic["account"] = tf.isValid
    case languageTextField:
      validDic["language"] = tf.isValid
    default:
      break
    }
    
    isValid = validDic.allSatisfy {$0.value}
  }
  
  private func setMultilanguage() {
    closeButton.title = "penny_test_close_text".localized()
    titleInfoLabel.text = "to_add_account_enter_information".localized()
    bankNameTextField.placeholder = "select_your_bank".localized()
    accountTextField.placeholder = "enter_bank_ac_no".localized()
    languageTextField.placeholder = "select_language".localized()
    verifyAccountButton.setTitle("verify_account_button_text".localized(), for: .normal)
    
  }
}

// MARK: AddAccountViewInterface

extension AddAccountViewController: AddAccountViewInterface {
  func setModel(model: (bankList: [BankInformation]?, kftcModel: KFTCModel?)) {
    self.model = model
  }
  
  func failureSetModel(error: Error) {
    alert(type: .error, message: error.localizedDescription) {[weak self] in
      guard let `self` = self else {return}
      self.dismiss(animated: true, completion: nil)
    }
  }
  
  func successVerify() {
    let url = "\(model.kftcModel?.url ?? "")&lang=\(selectedLanguage?.key ?? "")"
    var header = [String: String]()
    model.kftcModel?.header?.forEach({
      header[$0.key ?? ""] = $0.value ?? ""
    })
    
    header["Kftc-Bfop-BankCodeStd"] = selectedBank?.bankCode ?? ""
    header["Kftc-Bfop-AccountNum"] = accountTextField.text ?? ""
    
    presenter?.doGetTestURL(url: url, header: header)
  }
  
  func successTestURL(url: String) {
    presenter?.goKFTC(url: url, header: self.model.kftcModel?.header)
  }
  
  func failure(error: Error) {
    if error.localizedDescription.contains("JSON") {
      let url = "\(model.kftcModel?.url ?? "")&lang=\(selectedLanguage?.key ?? "")"
      
      let bankCode = KftcHeader(key: "Kftc-Bfop-BankCodeStd", value: selectedBank?.bankCode ?? "")
      let accountNumber = KftcHeader(key: "Kftc-Bfop-AccountNum", value: accountTextField.text ?? "")
      
      model.kftcModel?.header?.append(bankCode)
      model.kftcModel?.header?.append(accountNumber)
      
      presenter?.goKFTC(url: url, header: self.model.kftcModel?.header)
    } else {
      alert(type: .error, message: error.localizedDescription, okAction: nil)
    }
  }
  
  func startLoading() {
    showProgressHud()
  }
  
  func endLoading() {
    hideProgressHud()
  }
}