LONDON-IOS/GME Remit/Modules/WalletStatement/User Interface/View/WalletStatementViewController.swift

//
//  WalletStatementViewController.swift
//  GMERemittance
//
//  Created by gme_2 on 03/10/2018.
//Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit

enum WalletStatementType {}

class WalletStatementViewController: UIViewController {
  
  struct StringConstants {
    let navigationTitle = "wallet_statement_title_text".localized()
    let emptyMessage = "no_statement_found_text".localized()
  }
  
  // MARK: IBOutlets
  
  @IBOutlet weak var tableView: UITableView!
  @IBOutlet weak var dateRangeLabelHeightConstraint: NSLayoutConstraint!
  @IBOutlet weak var fromDateLabel: UILabel!
  @IBOutlet weak var toDateLabel: UILabel!
  @IBOutlet weak var emptyLabel: UILabel!
  
  // MARK: Properties
  
  var presenter: WalletStatementModuleInterface?
  var from: String?
  var to: String?
  
  var statements: [WalletStatement] = [] {
    didSet {
      self.emptyLabel.isHidden = !statements.isEmpty
      self.tableView.reloadData()
      guard let fromDate = from, let toDate = to else {
        self.dateRangeLabelHeightConstraint.constant = 0
        return
      }
      self.fromDateLabel.text = self.getHUmanReadableDate(date: fromDate)
      self.toDateLabel.text = self.getHUmanReadableDate(date: toDate)
      UIView.animate(withDuration: 0.33, animations: {
        self.dateRangeLabelHeightConstraint.constant = Constant.heightOfDateRangeLabel
      })
    }
  }
  
  struct Constant {
    static let heightOfDateRangeLabel: CGFloat = 35
  }
  
  // MARK: VC's Life cycle
  
  override func viewDidLoad() {
    super.viewDidLoad()
    self.setupNormalNavigation()
    self.setupDateFilterButton()
    self.setup()
  }
  
  override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.navigationItem.title = StringConstants().navigationTitle
  }
  
  override func viewWillDisappear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.navigationItem.title = ""
  }
  
  // MARK: IBActions
  
  @objc func openSearchFilter() {
    // open search filter
    guard let viewController = UIStoryboard(name: "TransactionHistoryDatePicker", bundle: nil)
      .instantiateViewController(
        withIdentifier: "DatePickerViewController"
      ) as? DatePickerViewController else {
        return
      }
    
    viewController.completion = self.selectedDate
    self.present(viewController, animated: true, completion: nil)
  }
  
  private func selectedDate(from: String?, to: String?) {
    self.from = from
    self.to = to
    guard let fromDate = from, let toDate = to else {return}
    self.presenter?.fetchWalletSatement(fromDate: fromDate, toDate: toDate)
  }
  
  // MARK: Other Functions
  
  private func setup() {
    // all setup should be done here
    setupDelegates()
    setupDateFilterButton()
    configureViews()
    configureText()
    self.presenter?.viewIsReady()
  }
  
  private func configureText() {
    self.emptyLabel.text = StringConstants().emptyMessage
  }
  
  private func configureViews() {
    self.dateRangeLabelHeightConstraint.constant = 0
    //        self.emptyLabel.textColor = AppConstants.themeBlueColor
  }
  
  private func setupDateFilterButton() {
    let filterItem = UIBarButtonItem(
      image: #imageLiteral(resourceName: "ic_calender"),
      style: UIBarButtonItem.Style.plain,
      target: self,
      action: #selector(self.openSearchFilter)
    )
    
    self.navigationItem.rightBarButtonItem = filterItem
  }
  
  private func getHUmanReadableDate(date: String?) -> String? {
    if let date = DateFormatter.toDate(dateString: date ?? "", format: AppConstants.dateFormat) {
      let dateString = DateFormatter.toString(date: date, format: AppConstants.humanReadableDateFormat)
      return dateString
    }
    return nil
  }
  
  private func setupDelegates() {
    self.tableView.delegate = self
    self.tableView.dataSource = self
  }
}

// MARK: WalletStatementViewInterface
extension WalletStatementViewController: WalletStatementViewInterface {
  func showLoading() {
    self.showProgressHud()
  }
  
  func hideLoading() {
    self.hideProgressHud()
  }
  
  func show(error: String) {
    self.alert(type: .error, message: error)
  }
  
  func show(models: [WalletStatement]) {
    self.statements = models
  }
}

// MARK: TableViewDelegate
extension WalletStatementViewController: UITableViewDelegate {
  func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    //        self.presenter?.showDetailOf(index: indexPath.row)
  }
}

// MARK: TableViewDatasource
extension WalletStatementViewController: UITableViewDataSource {
  func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return statements.count
  }
  
  func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    guard let cell = tableView.dequeueReusableCell(
      withIdentifier: "WalletStatementTableViewCell"
      ) as? WalletStatementTableViewCell else {
        return UITableViewCell()
      }
    
    cell.model = self.statements.elementAt(index: indexPath.row)
    cell.setup()
    return cell
  }
}