//
//  SetupRecipientViewController.swift
//  GME Remit
//
//  Created by InKwon James Kim on 09/08/2019.
//Copyright © 2019 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit
import RxSwift
import RxCocoa

enum DynamicFieldRequire: String {
  case mandatory = "M"
  case optional = "O"
  case hidden = "H"
}

class SetupRecipientViewController: UIViewController {
  // MARK: Properties
  var viewModel: SetupRecipientViewModel!
  
  weak var delegate: SetupRecipientDelegate?
  private var dynamicFieldDic: [String: ValidationTextField]?
  private let disposeBag = DisposeBag()

  // MARK: Computed Properties
  
  // MARK: IBOutlets
  
  @IBOutlet private weak var countryTextField: ValidationTextField!
  @IBOutlet private weak var paymentModeTextField: ValidationTextField!
  
  @IBOutlet private weak var countryContainerView: ShadowView!
  @IBOutlet private weak var recipientBankInfomationContainerView: UIView!
  @IBOutlet private weak var recipientInformationContainerView: UIStackView!
  @IBOutlet private weak var idContainerView: ShadowView!
  @IBOutlet private weak var addressContainerView: ShadowView!
  @IBOutlet private weak var otherContainerView: ShadowView!
  
  @IBOutlet private weak var bankTextField: ValidationTextField!
  @IBOutlet private weak var branchTextField: ValidationTextField!
  @IBOutlet private weak var accountTextField: ValidationTextField!
  
  @IBOutlet private weak var idTextField: ValidationTextField!
  @IBOutlet private weak var idNumberTextField: ValidationTextField!
  
  @IBOutlet private weak var firstNameTextField: ValidationTextField!
  @IBOutlet private weak var middleNameTextField: ValidationTextField!
  @IBOutlet private weak var lastNameTextField: ValidationTextField!
  @IBOutlet private weak var fullNameTextField: ValidationTextField!
  
  @IBOutlet private weak var firstNameLocalTextField: ValidationTextField!
  @IBOutlet private weak var middleNameLocalTextField: ValidationTextField!
  @IBOutlet private weak var lastNameLocalTextField: ValidationTextField!
  @IBOutlet private weak var fullNameLocalTextField: ValidationTextField!
  
  @IBOutlet private weak var nativeCountryTextField: ValidationTextField!
  @IBOutlet private weak var mobileTextField: ValidationTextField!
  @IBOutlet private weak var emailTextField: ValidationTextField!
  
  @IBOutlet private weak var stateProvinceTextField: ValidationTextField!
  @IBOutlet private weak var districtTextField: ValidationTextField!
  @IBOutlet private weak var cityTextField: ValidationTextField!
  @IBOutlet private weak var addressTextField: ValidationTextField!
  
  @IBOutlet private weak var relationTextField: ValidationTextField!
  @IBOutlet private weak var reasonTextField: ValidationTextField!
  
  @IBOutlet private weak var saveButton: UIButton!
  
  // MARK: VC's Life cycle
  override func viewDidLoad() {
    super.viewDidLoad()
    setup()
  }
  
  override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    title = "recipient_text".localized()
    setupNormalNavigation()
  }
  
  override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    view.endEditing(true)
  }
  
  // MARK: IBActions
  @IBAction func touchCloseButton(_ sender: UIBarButtonItem) {
    dismiss(animated: true, completion: nil)
  }
}

// MARK: Other Functions
extension SetupRecipientViewController {
  private func setup() {
    // all setup should be done here
    countryContainerView.hero.id = "setupRecipient"
    countryContainerView.hero.modifiers = [.fade, .scale(0.2)]
    setUI()
    setMultiLanguage()
    setBinding()
  }
  
  private func setMultiLanguage() {
    countryTextField.titleText = "country_text".localized()
    nativeCountryTextField.titleText = "native_country_text".localized()
    paymentModeTextField.titleText = "payment_mode_text".localized()
    bankTextField.titleText = "bank_text".localized()
    branchTextField.titleText = "branch_text".localized()
    accountTextField.titleText = "account_text".localized()
    firstNameTextField.titleText = "first_name_text".localized()
    middleNameTextField.titleText = "middle_name_text".localized()
    lastNameTextField.titleText = "last_name_text".localized()
    fullNameTextField.titleText = "full_name_text".localized()
    firstNameLocalTextField.titleText = "first_name_local_text".localized()
    middleNameLocalTextField.titleText = "middle_name_local_text".localized()
    lastNameLocalTextField.titleText = "last_name_local_text".localized()
    fullNameLocalTextField.titleText = "full_name_local_text".localized()
    idTextField.titleText = "id_type_text".localized()
    idNumberTextField.titleText = "id_number_text".localized()
    mobileTextField.titleText = "mobile_text".localized()
    emailTextField.titleText = "email_text".localized()
    stateProvinceTextField.titleText = "state_province_text".localized()
    districtTextField.titleText = "district_text".localized()
    cityTextField.titleText = "city_text".localized()
    addressTextField.titleText = "address_text".localized()
    relationTextField.titleText = "relation_text".localized()
    reasonTextField.titleText = "reason_text".localized()
    
    countryTextField.placeholder = "country_placeholder_text".localized()
    nativeCountryTextField.placeholder = "native_country_placeholder_text".localized()
    paymentModeTextField.placeholder = "payment_mode_placeholder_text".localized()
    bankTextField.placeholder = "bank_placeholder_text".localized()
    branchTextField.placeholder = "branch_placeholder_text".localized()
    accountTextField.placeholder = "account_placeholder_text".localized()
    firstNameTextField.placeholder = "first_name_placeholder_text".localized()
    middleNameTextField.placeholder = "middle_name_placeholder_text".localized()
    lastNameTextField.placeholder = "last_name_placeholder_text".localized()
    fullNameTextField.placeholder = "full_name_placeholder_text".localized()
    firstNameLocalTextField.placeholder = "first_name_local_placeholder_text".localized()
    middleNameLocalTextField.placeholder = "middle_name_local_placeholder_text".localized()
    lastNameLocalTextField.placeholder = "last_name_local_placeholder_text".localized()
    fullNameLocalTextField.placeholder = "full_name_local_placeholder_text".localized()
    idTextField.placeholder = "id_type_placeholder_text".localized()
    idNumberTextField.placeholder = "id_number_placeholder_text".localized()
    mobileTextField.placeholder = "mobile_placeholder_text".localized()
    emailTextField.placeholder = "email_placeholder_text".localized()
    stateProvinceTextField.placeholder = "stateProvince_placeholder_text".localized()
    districtTextField.placeholder = "district_placeholder_text".localized()
    cityTextField.placeholder = "city_placeholder_text".localized()
    addressTextField.placeholder = "address_placeholder_text".localized()
    relationTextField.placeholder = "relation_placeholder_text".localized()
    reasonTextField.placeholder = "reason_placeholder_text".localized()
    
    saveButton.setTitle("save_text".localized(), for: .normal)
  }
  
  private func setSelectTextFields(of textFields: [UITextField]) {
    textFields.forEach {
      $0.inputView = UIView()
      $0.keyboardToolbar.isHidden = true
    }
  }
  
  private func setUI() {
    saveButton.layer.cornerRadius = 5
    
    countryTextField.statusImageView.isHidden = true
    
    paymentModeTextField.statusImageView.isHidden = true
    paymentModeTextField.isHidden = true
    paymentModeTextField.alpha = 0
    
    setSelectTextFields(of:[
      countryTextField, paymentModeTextField, bankTextField, branchTextField,
      idTextField, stateProvinceTextField, districtTextField, relationTextField, reasonTextField,
      nativeCountryTextField
      ]
    )
    recipientBankInfomationContainerView.isHidden = true
    recipientBankInfomationContainerView.alpha = 0
    
    recipientInformationContainerView.isHidden = true
    recipientInformationContainerView.alpha = 0
    
    recipientBankInfomationContainerView.travelSubView { (view, _) in
      if let textField = view as? ValidationTextField {
        textField.statusImageView.isHidden = true
        textField.isHidden = true
      }
    }
    
    recipientInformationContainerView.travelSubView { (view, _) in
      if let textField = view as? ValidationTextField {
        textField.statusImageView.isHidden = true
        textField.isHidden = true
      }
    }
    
    dynamicFieldDic = [
      "Bank Name": bankTextField,
      "Branch Name": branchTextField,
      "Account No.": accountTextField,
      "First Name": firstNameTextField,
      "Middle Name": middleNameTextField,
      "Last Name": lastNameTextField,
      "Full Name": fullNameTextField,
      "First Name in Local": firstNameLocalTextField,
      "Middle Name in Local": middleNameLocalTextField,
      "Last Name in Local": lastNameLocalTextField,
      "Local Name": fullNameLocalTextField,
      "Native Country": nativeCountryTextField,
      "Id Type": idTextField,
      "ID Number": idNumberTextField,
      "Mobile Number": mobileTextField,
      "Email": emailTextField,
      "Province": stateProvinceTextField,
      "District": districtTextField,
      "City": cityTextField,
      "Address": addressTextField,
      "Realation Group": relationTextField,
      "Transfer Reason": reasonTextField
    ]
  }
  
  private func setBinding() {
    let viewWillAppear = rx.sentMessage(#selector(UIViewController.viewWillAppear(_:)))
      .mapToVoid()
      .asDriverOnErrorJustComplete()
    
    let saveTrigger = saveButton.rx.tap.flatMap { [weak self] _ -> Observable<Recipient> in
      var recipient = Recipient()
      
      recipient.firstName = self?.firstNameTextField.text
      recipient.middleName = self?.middleNameTextField.text
      recipient.lastName = self?.lastNameTextField.text
      recipient.localFirstName = self?.firstNameLocalTextField.text
      recipient.localMiddleName = self?.middleNameLocalTextField.text
      recipient.localLastName = self?.lastNameLocalTextField.text
      recipient.fullName = self?.fullNameTextField.text
      recipient.localFullName = self?.fullNameLocalTextField.text
      recipient.address = self?.addressTextField.text
      recipient.city = self?.cityTextField.text
      recipient.email = self?.emailTextField.text
      recipient.mobile = self?.mobileTextField.mobileNumberText
      recipient.idNumber = self?.idNumberTextField.text
      recipient.agent?.accountNumber = self?.accountTextField.text
      
      return Observable.just(recipient)
    }.asDriverOnErrorJustComplete()
    
    let input = SetupRecipientViewModel.Input(
      initialTrigger: viewWillAppear,
      openCountryTrigger: countryTextField.rx.controlEvent(.editingDidBegin).asDriver(),
      openPaymentTrigger: paymentModeTextField.rx.controlEvent(.editingDidBegin).asDriver(),
      openBankTrigger: bankTextField.rx.controlEvent(.editingDidBegin).asDriver(),
      openBranchTrigger: branchTextField.rx.controlEvent(.editingDidBegin).asDriver(),
      openIDTypeTrigger: idTextField.rx.controlEvent(.editingDidBegin).asDriver(),
      openStateProvinceTrigger: stateProvinceTextField.rx.controlEvent(.editingDidBegin).asDriver(),
      openDistrictTrigger: districtTextField.rx.controlEvent(.editingDidBegin).asDriver(),
      openRelationTrigger: relationTextField.rx.controlEvent(.editingDidBegin).asDriver(),
      openReasonTrigger: reasonTextField.rx.controlEvent(.editingDidBegin).asDriver(),
      openNativeCountryTrigger: nativeCountryTextField.rx.controlEvent(.editingDidBegin).asDriver(),
      saveTrigger: saveTrigger
    )
    
    let output = viewModel.transform(input: input)
    
    output.isError
      .drive(onNext: { [weak self] in guard let `self` = self else { return }
        self.alert(type: .error, message: $0.localizedDescription)
      })
      .disposed(by: disposeBag)
    
    output.isProgress
      .drive(onNext: { [weak self] in guard let `self` = self else { return }
        $0 ? self.showProgressHud() : self.hideProgressHud()
      })
      .disposed(by: disposeBag)
    
    output.success
      .drive(onNext: { successObject in
        let message = "recipient_add_success_message_text".localized().replacingOccurrences(
          of: "xxx",
          with: successObject.data?.fullName ?? ""
        )

        self.alertWithOkCancel(
          type: .normal,
          message: "\(successObject.message ?? "")\n\(message)",
          title: "success_text".localized(),
          okTitle: "yes_text".localized(),
          cancelTitle: "no_text".localized(),
          okAction: { [weak self] in guard let `self` = self else { return }
            self.dismiss(animated: true) { [weak self] in guard let `self` = self else { return }
              self.delegate?.setupRecieient(
                self,
                didSelectRecipientID: successObject.data?.receiverID ?? ""
              )
            }
        },
          cancelAction: { [weak self] in guard let `self` = self else { return }
            self.dismiss(animated: true) { [weak self] in guard let `self` = self else { return }
              self.delegate?.setupRecieient(
                self,
                didSelectRecipientID: nil
              )
            }
        })
      }).disposed(by: disposeBag)
    
    bindUI(output: output)
  }
  
  private func bindUI(output: SetupRecipientViewModel.Output) {
    output.selectedRecipient
      .drive(onNext: { [weak self] in guard let `self` = self else { return }
        self.setText(with: $0)
      }).disposed(by: disposeBag)
    
    output.selectedCountry
      .drive(onNext: { [weak self] in guard let `self` = self else { return }
        guard let country = $0 else { return }
        
        self.countryTextField.text = country.countryName
        self.countryTextField.setCountry(with: country.countryCode, isShowCode: false)
        self.countryTextField.sendActions(for: .editingChanged)
        
        self.mobileTextField.setCountry(with: country.countryCode)
        
        self.paymentModeTextField.animateHidden(isHidden: false, duration: 0.5)
        self.recipientBankInfomationContainerView.animateHidden(isHidden: true, duration: 0.5)
        self.recipientInformationContainerView.animateHidden(isHidden: true, duration: 0.5)
      }).disposed(by: disposeBag)
    
    output.selectedPaymentMode.drive(onNext: { [weak self] in guard let `self` = self else { return }
      self.paymentModeTextField.text = $0?.subtitle
      self.paymentModeTextField.sendActions(for: .editingChanged)
    }).disposed(by: disposeBag)
    
    output.selectedBank.drive(onNext: { [weak self] in guard let `self` = self else { return }
      self.bankTextField.text = $0?.name
      self.bankTextField.sendActions(for: .editingChanged)
      if $0?.branchRequired?.lowercased() == "false" {
        self.branchTextField.isHidden = true
        self.branchTextField.text = ""
        self.branchTextField.valid.onNext(true)
      } else {
        self.branchTextField.isHidden = false
        self.branchTextField.valid.onNext(false)
      }
      
      if $0?.accountRequired?.lowercased() == "false" {
        self.accountTextField.isHidden = true
        self.accountTextField.text = ""
        self.accountTextField.valid.onNext(true)
      } else {
        self.accountTextField.isHidden = false
        if self.accountTextField.text != "" {
          self.accountTextField.valid.onNext(true)
        } else {
          self.accountTextField.valid.onNext(false)
        }
      }
    }).disposed(by: disposeBag)
    
    output.selectedBranch.drive(onNext: { [weak self] in guard let `self` = self else { return }
      self.branchTextField.text = $0?.name
      self.branchTextField.sendActions(for: .editingChanged)
    }).disposed(by: disposeBag)
    
    output.selectedIDType.drive(onNext: { [weak self] in guard let `self` = self else { return }
      self.idTextField.text = $0?.text
      self.idTextField.sendActions(for: .editingChanged)
    }).disposed(by: disposeBag)
    
    output.selectedStateProvince.drive(onNext: { [weak self] in guard let `self` = self else { return }
      self.stateProvinceTextField.text = $0?.name
      self.stateProvinceTextField.sendActions(for: .editingChanged)
      
      let count = $0?.districts?.count ?? 0
      if count == 0 {
        self.districtTextField.isHidden = true
        self.districtTextField.valid.onNext(true)
      } else {
        self.districtTextField.isHidden = false
        self.districtTextField.valid.onNext(false)
      }
      
    }).disposed(by: disposeBag)
    
    output.selectedDistrict.drive(onNext: { [weak self] in guard let `self` = self else { return }
      self.districtTextField.text = $0?.name
      self.districtTextField.sendActions(for: .editingChanged)
    }).disposed(by: disposeBag)
    
    output.selectedRelation.drive(onNext: { [weak self] in guard let `self` = self else { return }
      self.relationTextField.text = $0?.title
      self.relationTextField.sendActions(for: .editingChanged)
    }).disposed(by: disposeBag)
    
    output.selectedReason.drive(onNext: { [weak self] in guard let `self` = self else { return }
      self.reasonTextField.text = $0?.title
      self.reasonTextField.sendActions(for: .editingChanged)
    }).disposed(by: disposeBag)
    
    output.selectedNativeCountry.drive(onNext: { [weak self] in guard let `self` = self else { return }
      self.nativeCountryTextField.text = $0?.text
      self.nativeCountryTextField.sendActions(for: .editingChanged)
    }).disposed(by: disposeBag)
    
    output.models.dynamicFieldsModel.drive(onNext: { [weak self] in guard let `self` = self else { return }
      self.setDynamicFields(dynamicFieldInfo: $0)
      self.recipientBankInfomationContainerView.animateHidden(isHidden: false, duration: 0.5)
      self.recipientInformationContainerView.animateHidden(isHidden: false, duration: 0.5)
    }).disposed(by: disposeBag)
  }
  
  private func setDynamicFields(dynamicFieldInfo: [FieldModel]?) {
    dynamicFieldInfo?.forEach { [weak self] property in
      guard let `self` = self else { return }
      guard
        let key = property.fieldName,
        let textField = self.dynamicFieldDic?[key],
        let isRequire = DynamicFieldRequire(rawValue: property.required ?? ""),
        let min = property.minLength,
        let max = property.maxLength,
        let keyboardType = property.keyBoardType else { return }
      
      textField.errorMessage = "general_length_error_text".localized().replacingOccurrences(
        of: "xxx",
        with: "\(min)"
      ).replacingOccurrences(of: "ooo", with: "\(max)")
      
      switch isRequire {
      case .mandatory:
        textField.isHidden = false
        if max == min && min == -1 {
          textField.validCondition = { !$0.isEmpty }
          textField.errorMessage = nil
        } else {
          textField.validCondition = { ($0.count >= min && $0.count <= max) && !$0.isEmpty }
        }
      case .optional:
        textField.isHidden = false
        if max == min && min == -1 {
          textField.validCondition = nil
          textField.errorMessage = nil
        } else {
          textField.validCondition = { ($0.count >= min && $0.count <= max) }
        }
        
        if !textField.titleText.contains("optional_hint_text".localized()) {
          textField.titleText += "optional_hint_text".localized()
          textField.placeholder = "\(textField.placeholder ?? "") \("optional_hint_text".localized())"
        }
      case .hidden:
        textField.isHidden = true
        textField.text = ""
      }
      
      if key.contains("Local") {
        textField.keyboardType = .default
      } else {
        let keyType = GMEKeyboardType(rawValue: keyboardType) ?? GMEKeyboardType.alphabetNumbericSpecial
        
        switch keyType {
        case .numberic: textField.keyboardType = .numberPad
        default: textField.keyboardType = .asciiCapable
        }
        
        textField.rx.controlEvent(.editingChanged).asDriver()
          .drive(onNext: { _ in
            switch keyType {
            case .numberic: textField.fitlerBy(type: .alphabetNumberic, isSendAction: false)
            default: textField.fitlerBy(type: keyType, isSendAction: false)
            }
        }).disposed(by: disposeBag)
      }
    }
    
    guard let isValids = self.dynamicFieldDic?.values.filter({!$0.isHidden}).compactMap({$0.valid})
      else {return}
    
    Observable
      .combineLatest(isValids).flatMap {
        Observable.just($0.allSatisfy {$0})
      }
      .bind { [weak self] in guard let `self` = self else { return }
        self.saveButton.isEnabled = $0
        self.saveButton.backgroundColor = $0 ? .themeRed : .lightGray
      }
      .disposed(by: disposeBag)
    
    idContainerView.isHidden = idTextField.isHidden && idNumberTextField.isHidden
    
    addressContainerView.isHidden = stateProvinceTextField.isHidden &&
      districtTextField.isHidden &&
      cityTextField.isHidden &&
      addressTextField.isHidden
    
    otherContainerView.isHidden = mobileTextField.isHidden &&
      emailTextField.isHidden &&
      relationTextField.isHidden &&
      reasonTextField.isHidden
  }
  
  private func setText(with recipient: Recipient?) {
    fullNameTextField.text = recipient?.fullName
    fullNameTextField.sendActions(for: .editingChanged)
    
    firstNameTextField.text = recipient?.firstName
    firstNameTextField.sendActions(for: .editingChanged)
    
    middleNameTextField.text = recipient?.middleName
    middleNameTextField.sendActions(for: .editingChanged)
    
    lastNameTextField.text = recipient?.lastName
    lastNameTextField.sendActions(for: .editingChanged)
    
    fullNameLocalTextField.text = recipient?.localFullName
    fullNameLocalTextField.sendActions(for: .editingChanged)
    
    firstNameLocalTextField.text = recipient?.localFirstName
    firstNameLocalTextField.sendActions(for: .editingChanged)
    
    middleNameLocalTextField.text = recipient?.localMiddleName
    middleNameLocalTextField.sendActions(for: .editingChanged)
    
    lastNameLocalTextField.text = recipient?.localLastName
    lastNameLocalTextField.sendActions(for: .editingChanged)
    
    accountTextField.text = recipient?.agent?.accountNumber
    accountTextField.sendActions(for: .editingChanged)
    
    idNumberTextField.text = recipient?.idNumber
    idNumberTextField.sendActions(for: .editingChanged)
    
    emailTextField.text = recipient?.email
    emailTextField.sendActions(for: .editingChanged)
    
    mobileTextField.setCoutryFlag(with: recipient?.countryCode)
    mobileTextField.mobileNumberText = recipient?.mobile
    mobileTextField.sendActions(for: .editingChanged)
    
    addressTextField.text = recipient?.address
    addressTextField.sendActions(for: .editingChanged)
    
    cityTextField.text = recipient?.city
    cityTextField.sendActions(for: .editingChanged)
  }
}