//
//  RedeemViewController.swift
//  GME Remit
//
//  Created by InKwon Devik Kim on 11/04/2019.
//Copyright © 2019 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit
import Kingfisher

class RedeemViewController: UIViewController {
  
  // MARK: Properties
  
  var presenter: RedeemModuleInterface?
  
  private var model: RewardProduct? {
    didSet {
      if let imageData = model?.productImgPath,
        let url = URL(string: imageData) {
        selectedItemImageView.kf.setImage(with: url)
      }
      
      guard
        let selectedItemName = model?.productName,
        let selectedItemPoint = model?.pointPrice?.likeCommaMoney() else {
          return
      }
      
      let message = "selected_product_message_text"
        .localized()
        .replacingOccurrences(of: "xxx", with: selectedItemName)
        .replacingOccurrences(of: "ooo", with: selectedItemPoint)
      
      selectInformationLabel.text = message

    }
  }
  
  private var ordered: Redeem?
  
  private enum AddressType: Int {
    case branch = 0
    case custom
  }
  
  private enum UserType: Int {
    case user
    case custom
  }
  
  private var selectedUserType = UserType.user {
    didSet {
      let name: String?
      let phoneNumber: String?
      let isEnable: Bool
      switch selectedUserType {
      case .user:
        isEnable = false
        name = GMEDB.shared.user.string(.fullName)
        phoneNumber = GMEDB.shared.user.string(.mobileNumber)
      case .custom:
        isEnable = true
        name = ""
        phoneNumber = ""
      }
      
      userNameTextField.isEnabled = isEnable
      userPhoneNumberTextField.isEnabled = isEnable
      
      userNameTextField.text = name
      userPhoneNumberTextField.text = phoneNumber
      
      userNameTextField.sendActions(for: .editingChanged)
      userPhoneNumberTextField.sendActions(for: .editingChanged)
      
      userInfoView.isHidden = false
      selectAddressInfoLabel.isHidden = false
      addressSegmentView.isHidden = false
      
      UIView.animate(withDuration: 0.3, animations: {[weak self] in
        guard let `self` = self else { return }
        
        self.userInfoView.alpha = 1
        self.selectAddressInfoLabel.alpha = 1
        self.addressSegmentView.alpha = 1
        }, completion:  nil)
    }
  }
  
  private var selectedAddressType = AddressType.branch {
    didSet {
      switch selectedAddressType {
      case .branch:
        selectedAddress = nil
        detailAddressTextField.text = ""
        branchesView.isHidden = false
        addressView.isHidden = true
        
        UIView.animate(withDuration: 0.3, animations: { [weak self] in
          guard let `self` = self else {return}
          
          self.branchesView.alpha = 1
          self.addressView.alpha = 0
          }, completion:  nil)
        
      case .custom:
        selectedBranch = nil
        branchesView.isHidden = true
        addressView.isHidden = false
        
        UIView.animate(withDuration: 0.3, animations: {[weak self] in
          guard let `self` = self else {return}
          
          self.branchesView.alpha = 0
          self.addressView.alpha = 1
          }, completion:  nil)
      }
      
      submitButton.isHidden = false
      perform(#selector(self.moveToBottom), with: nil, afterDelay: 0.3)
      
    }
  }
  
  private var selectedBranch: Branch? {
    didSet {
      branchTextField.text = selectedBranch?.agentName
      branchTextField.sendActions(for: .editingChanged)
    }
  }
  
  private var selectedAddress: Juso? {
    didSet {
      zipcodeTextField.text = selectedAddress?.zipNo
      addressTextField.text = selectedAddress?.roadAddr
      detailAddressTextField.sendActions(for: .editingChanged)
    }
  }
  
  private lazy var branchesPickerView = UIPickerView()
  
  private var branches: [Branch]?
  
  // MARK: IBOutlets
  
  @IBOutlet private weak var selectedItemInfoView: UIView!
  @IBOutlet private weak var selectedItemImageView: UIImageView!
  @IBOutlet private weak var selectInformationLabel: UILabel!
  
  @IBOutlet private weak var userInfoSegmentedControl: UISegmentedControl!
  @IBOutlet private weak var addressSegmentedControl: UISegmentedControl!
  
  @IBOutlet private weak var userNameTextField: UITextField!
  @IBOutlet private weak var userPhoneNumberTextField: UITextField!
  
  @IBOutlet private weak var branchTextField: UITextField!
  @IBOutlet private weak var detailAddressTextField: UITextField!
  
  @IBOutlet private weak var addressTextField: UITextField!
  @IBOutlet private weak var zipcodeTextField: UITextField!
  
  @IBOutlet private weak var submitButton: UIButton!
  @IBOutlet private weak var searchButton: UIButton!
  
  @IBOutlet private weak var branchesView: UIStackView!
  @IBOutlet private weak var addressView: UIStackView!
  @IBOutlet private weak var userInfoView: UIStackView!
  @IBOutlet private weak var selectAddressInfoLabel: UILabel!
  @IBOutlet private weak var addressSegmentView: UIView!
  @IBOutlet private weak var scrollView: UIScrollView!
  
  @IBOutlet weak var receiverTitleLabel: UILabel!
  @IBOutlet weak var phoneNumberTitleLabel: UILabel!
  @IBOutlet weak var branchInfotmationTitleLabel: UILabel!
  
  // MARK: VC's Life cycle
  
  override func viewDidLoad() {
    super.viewDidLoad()
    setup()
    
    presenter?.viewIsReady()
    presenter?.fetchBranches()
  }
  
  override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    title = "reward_group_title_text".localized()
  }
  
  override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    title = ""
  }
  
  // MARK: IBActions
  
  @IBAction
  private func cancelButtonTouch(_ sender: UIBarButtonItem) {
    dismiss(animated: true, completion: nil)
  }
  
  @IBAction
  private func touchSearchAddressButton(_ sender: UIButton) {
    presenter?.showSearchAddressVC()
  }
  
  @IBAction
  private func touchBranches(_ sender: UIButton) {
    presenter?.showBranchesVC()
  }
  
  @IBAction
  private func touchSubmitButton(_ sender: UIButton) {
    
    let address = "\(detailAddressTextField.text ?? ""), \(addressTextField.text ?? "")"
    
    let confirmVC = ConfirmViewController(nibName: "ConfirmViewController", bundle: nil)
    
    var configure = ConfirmViewControllerConfiguration()
    
    configure.content1 = userNameTextField.text
    configure.content2 = userPhoneNumberTextField.text
    configure.multiLineContent = (selectedAddressType == .custom) ? address : selectedBranch?.agentName
    
    confirmVC.setConfigure(with: configure)
    confirmVC.delegate = self
    
    present(confirmVC, animated: true, completion: nil)
  }
  
  // MARK: Other Functions
  
  private func setup() {
    // all setup should be done here
    branchesPickerView.delegate = self
    branchesPickerView.dataSource = self
    
    userNameTextField.addTarget(self, action: #selector(editingChanged(_:)), for: .editingChanged)
    userPhoneNumberTextField.addTarget(self, action: #selector(editingChanged(_:)), for: .editingChanged)
    branchTextField.addTarget(self, action: #selector(editingChanged(_:)), for: .editingChanged)
    detailAddressTextField.addTarget(self, action: #selector(editingChanged(_:)), for: .editingChanged)
    
    setButton()
    setSegmentedControl()
    //    self.setDefaultState()
    setOnlyBranchMode()
    
    setMultiLanguage()
    
    navigationController?.interactivePopGestureRecognizer?.delegate = self
    navigationController?.interactivePopGestureRecognizer?.isEnabled = true
    
    branchInfotmationTitleLabel.textColor = .themeRed
  }
}

// MARK: RedeemViewInterface

extension RedeemViewController: RedeemViewInterface {
  func setModel(model: RewardProduct?) {
    self.model = model
  }
  
  func setBranches(with model: [Branch]?) {
    branches = model
  }
  
  func setBranchesError(with error: Error) {
    alert(type: .error, message: error.localizedDescription)
  }
  
  func submitSuccess() {
    alert(
      type: .normal,
      message: "order_completed_message_text".localized(),
      title: "order_completed_message_title_text".localized()
    ) {[weak self] in
      guard let `self` = self else {return}
      
      self.presenter?.refreshRewardPoint()
    }
  }
  
  func submitFailure(with error: Error) {
    alert(type: .error, message: error.localizedDescription)
  }
  
  func startLoading() {
    showProgressHud()
  }
  
  func endLoading() {
    hideProgressHud()
  }
  
  func failureRefreshRewardPoint(with error: Error) {
    alert(type: .error, message: error.localizedDescription, title: "Alert") {[weak self] in
      guard let `self` = self else { return }
      self.presenter?.goRewardHome()
    }
  }
  
  func successRefreshRewardPoint() {
    presenter?.goRewardHome()
  }
}

// MARK: - UIPickerViewDataSource, UIPickerViewDelegate

extension RedeemViewController: UIPickerViewDataSource, UIPickerViewDelegate {
  func numberOfComponents(in pickerView: UIPickerView) -> Int {
    return 1
  }
  
  func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
    return branches?.count ?? 0
  }
  
  func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
    return branches?[row].agentName
  }
  
  func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
    selectedBranch = branches?[row]
  }
}

// MARK: - SearchAddressDelegate

extension RedeemViewController: SearchAddressDelegate {
  func searchAddress(viewController: SearchAddressViewController, selectedJuso: Juso) {
    selectedAddress = selectedJuso
    viewController.dismiss(animated: true, completion: nil)
  }
}

// MARK: - Other Methods

extension RedeemViewController {
 
  private func setButton() {
    submitButton.layer.cornerRadius = 5
  }
  
  private func setDefaultState() {
    branchesView.isHidden = true
    addressView.isHidden = true
    userInfoView.isHidden = true
    submitButton.isHidden = true
    selectAddressInfoLabel.isHidden = true
    addressSegmentView.isHidden = true
    
    userInfoView.alpha = 0
    selectAddressInfoLabel.alpha = 0
    addressSegmentView.alpha = 0
    branchesView.alpha = 0
    addressView.alpha = 0
    
    addressTextField.layer.cornerRadius = 5
    branchTextField.inputView = branchesPickerView
  }
  
  private func setSegmentedControl() {
    let font = UIFont.sanfrancisco(.medium, size: 14)
    
    addressSegmentedControl.setTitleTextAttributes(
      [NSAttributedString.Key.font: font],
      for: .normal
    )
    
    addressSegmentedControl.addTarget(
      self,
      action: #selector(addressTypeChange(_:)),
      for: .valueChanged
    )
    
    userInfoSegmentedControl.setTitleTextAttributes(
      [NSAttributedString.Key.font: font],
      for: .normal
    )
    
    userInfoSegmentedControl.addTarget(
      self,
      action: #selector(userInfoChange(_:)),
      for: .valueChanged
    )
  }
  
  private func setOnlyBranchMode() {
    userNameTextField.isEnabled = false
    userPhoneNumberTextField.isEnabled = false
    
    userNameTextField.text = GMEDB.shared.user.string(.fullName)
    userPhoneNumberTextField.text = GMEDB.shared.user.string(.mobileNumber)
    
    userNameTextField.sendActions(for: .editingChanged)
    userPhoneNumberTextField.sendActions(for: .editingChanged)
    
    branchTextField.inputView = branchesPickerView
  }
  
  private func setMultiLanguage() {
    receiverTitleLabel.text = "receiver_text".localized()
    phoneNumberTitleLabel.text = "mobile_number_text".localized()
    
    selectAddressInfoLabel.text = "select_branch_for_redeem_your_reward_text".localized()
    branchTextField.placeholder = "select_branch_text".localized()
    branchInfotmationTitleLabel.text = "you_visit_nearest_gme_branch_to_redeem_text".localized()
    
    selectInformationLabel.text = "selected_product_message_text".localized()
    
    submitButton.setTitle("submit_text".localized(), for: .normal)
    
  }
  
  @objc
  private func addressTypeChange(_ sender: UISegmentedControl) {
    selectedAddressType = AddressType(rawValue: sender.selectedSegmentIndex) ?? .branch
  }
  
  @objc
  private func userInfoChange(_ sender: UISegmentedControl) {
    selectedUserType = UserType(rawValue: sender.selectedSegmentIndex) ?? .user
  }
  
  @objc
  private func editingChanged(_ textField: UITextField) {
    guard
      let name = userNameTextField.text,
      let phoneNumber = userPhoneNumberTextField.text,
      let branch = branchTextField.text,
      let detail = detailAddressTextField.text,
      let address = addressTextField.text else { return }
    
    var isValid = name.count > 0 && phoneNumber.count > 0
    
    switch selectedAddressType {
    case .branch:
      isValid = isValid && branch.count > 0
    case .custom:
      isValid = isValid && address.count > 0 && detail.count > 0
    }
    
    submitButton.isEnabled = isValid
    submitButton.backgroundColor = isValid ? .themeRed : .lightGray
  }
  
  @objc private func moveToBottom() {
    if scrollView.contentSize.height - scrollView.bounds.size.height > 0 {
      let bottomOffset = CGPoint(x: 0, y: scrollView.contentSize.height - scrollView.bounds.size.height)
      scrollView.setContentOffset(bottomOffset, animated: true)
    }
  }
}

// MARK: - ConfirmViewControllerDelegate
extension RedeemViewController: ConfirmViewControllerDelegate {
  func confirm(_ viewController: ConfirmViewController) {
    
    let recvType = selectedAddressType == .custom ? "1" : "2"
    let address = "\(detailAddressTextField.text ?? ""), \(addressTextField.text ?? "")"
    
    ordered = Redeem(
      userID: GMEDB.shared.user.string(.userId),
      productCode: model?.productCode,
      usePoint: model?.pointPrice,
      orderType: "1",
      recvType: recvType,
      branchCode: selectedBranch?.agentID,
      recvAddress: address,
      recvZipCode: selectedAddress?.zipNo,
      recvPhoneNumber: userPhoneNumberTextField.text,
      recvName: userNameTextField.text
    )
    
    presenter?.submit(with: ordered)
  }
  
  func cancel(_ viewController: ConfirmViewController) {
    
  }
}

// MARK: - UIGestureRecognizerDelegate
extension RedeemViewController: UIGestureRecognizerDelegate {
  func gestureRecognizer(
    _ gestureRecognizer: UIGestureRecognizer,
    shouldBeRequiredToFailBy otherGestureRecognizer: UIGestureRecognizer
  ) -> Bool {
    return true
  }
}