//
//  AutoRefundsViewController.swift
//  GME Remit
//
//  Created by Mac on 11/20/18.
//  Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit

class AutoRefundsViewController: UIViewController {
  
  struct  StringConstants {
    let headerTitleText =  "how_much_would_you_like_to_refund".localized()
    let availableBalanceTitleText = "available_balance_text".localized()
    let refundChargeTitleTxty = "per_refund_bank_charge".localized()
    let navigationTitle =  "auto_refund_title_text".localized()
    let yourRefundText = "you_refund_text".localized()
    let refundButtonText = "refund_text".localized()
  }
  
  @IBOutlet weak var backgroundView: UIView!
  @IBOutlet weak var countryBackgroundView: UIView!
  @IBOutlet weak var availableBalanceTitleLabel: UILabel!
  @IBOutlet weak var refundChargeTitleLabel: UILabel!
  @IBOutlet weak var yourRefundLabel: UILabel!
  @IBOutlet weak var headerTitleLabel: UILabel!
  
  @IBOutlet weak var refundButton: UIButton!
  
  @IBOutlet weak var availableBalanceLabel: UILabel!
  @IBOutlet weak var refundChargeLabel: UILabel!
  @IBOutlet weak var amountTextfield: GMENumberTextField!
  
  var autorefund: AutoRefund? {
    didSet {
      let availableBalance = (autorefund?.currentBalance ?? "0") + "(KRW)"
      let refundCharge = (autorefund?.chargeAmount ?? "10,000") + "(KRW)"
      self.availableBalanceLabel.text = availableBalance
      self.refundChargeLabel.text = refundCharge
    }
  }
  
  override func viewDidLoad() {
    super.viewDidLoad()
    setup()
    // Do any additional setup after loading the view.
  }
  
  private func setup() {
    setupNormalNavigation()
    self.backgroundView.layer.borderColor = UIColor.init(hex: "E0E0E0").cgColor
    self.backgroundView.layer.borderWidth = 0.5
    self.backgroundView.layer.cornerRadius = 6
    self.countryBackgroundView.layer.cornerRadius = 6
    configureText()
    
    amountTextfield.addTarget(self, action: #selector(editingChanged(_:)), for: .editingChanged)
    
    headerTitleLabel.textColor = .themeRed
    refundButton.backgroundColor = .themeRed
    amountTextfield.textColor = .themeRed
    refundButton.layer.cornerRadius = 5
  }
  
  @objc private func editingChanged(_ sender: UITextField) {
    amountTextfield.text = Utility.getCommaSeperatedString(numberString: amountTextfield.text!)
  }
  
  private func configureText() {
    self.availableBalanceTitleLabel.text = StringConstants().availableBalanceTitleText + " : "
    self.refundChargeTitleLabel.text = StringConstants().refundChargeTitleTxty + " : "
    self.yourRefundLabel.text = StringConstants().yourRefundText
    self.refundButton.setTitle(StringConstants().refundButtonText, for: UIControl.State.normal)
    self.headerTitleLabel.text = StringConstants().headerTitleText
  }
  
  override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.navigationItem.title = StringConstants().navigationTitle
    fetchInfo()
  }
  
  override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    amountTextfield.becomeFirstResponder()
  }
  
  override func viewWillDisappear(_ animated: Bool) {
    super.viewWillAppear(animated)
    view.endEditing(true)
  }
  
  private func fetchInfo() {
    self.showProgressHud()
    let username = Utility.getMyUserName()
    self.fetchAutoRefundInfo(
      username: username,
      success: { (autorefund) in
        self.autorefund = autorefund
        self.hideProgressHud()
      },
      failure: { (error) in
        self.hideProgressHud()
        
        self.alertWithOk(
          type: .error,
          message: error.localizedDescription,
          okTitle: "ok_text".localized()) {
            self.navigationController?.popViewController(animated: true)
        }
        
        self.show(error: error.localizedDescription)
      }
    )
  }
  
  @IBAction func refund(_ sender: Any) {
    guard let amount = self.amountTextfield.text?.stringRemovingComma() else { return }
    
    let minAmnt = self.autorefund?.minAmount ?? "0"
    if amount.isEmpty {
      self.show(error: "add refund amount")
      return
    }
    
    if !isValidRefundable(amount: amount) {
      let min = Utility.getCommaSeperatedString(numberString: minAmnt) ?? ""
      self.show(error: "Amount cannot be minimum than \(min)")
      return
    }
    let chargeAmt =  self.autorefund?.chargeAmount ?? ""
    
    let userName = Utility.getMyUserName()
    let id = Utility.getMyId()
    
    self.showProgressHud()
    self.refund(
      amount: amount,
      userName: userName,
      chargeAmount: chargeAmt,
      userId: id,
      success: { (successMessage) in
        self.hideProgressHud()
        self.alertWithOk(
          type: .normal,
          message: successMessage?.message,
          title: "Success",
          okTitle: "Ok",
          okAction: {
            self.navigationController?.popViewController(animated: true)
            self.updateBalance(value: successMessage)
            
        })
      },
      failure: { (error) in
        self.hideProgressHud()
        self.show(error: error.localizedDescription)
      }
    )
  }
  
  private func updateBalance(value: SuccessMessage?) {
    let balance = value?.extra ?? ""
    GMEDB.shared.user.set(balance, .availableBalance)
    
    let userInfo = [SideMenuNavigationNotifications.availableBalance : balance]
    NotificationCenter.default.post(
      name: self.getAvailableBalanceNotificationName(),
      object: nil,
      userInfo: userInfo
    )
  }
  
  func getAvailableBalanceNotificationName() -> Notification.Name {
    return Notification.Name.init(rawValue: SideMenuNavigationNotifications.availableBalance)
  }
  
  private func isValidRefundable(amount: String) -> Bool {
    let minRefundAmount = (self.autorefund?.minAmount ?? "0").replacingOccurrences(of: ",", with: "")
    
    guard let amt = Double(amount), let minRefundAmt = Double(minRefundAmount)  else {return false}
    let result =  amt >= minRefundAmt
    return result
  }
  
  func show(error: String) {
    self.alert(type: .error, message: error)
  }
}

extension AutoRefundsViewController: FetchAutoRefundInfo {}
extension AutoRefundsViewController: RefundService {}