XML Exercise

// ------------ TableViewController.swift ------

import UIKit

class TableViewController: UITableViewController, XMLParserDelegate {

    @IBOutlet weak var currenciesTableView: UITableView!
    var passName = false, passUnit = false, passCurrencyCode = false, passCountry = false, passRate = false, passChange = false
    var parser = XMLParser()
    var names:[String] = []
    var units:[String] = []
    var currCodes:[String] = []
    var countries:[String] = []
    var rates:[String] = []
    var changes:[String] = []

    let reuseIdentifier = "CurrencyCell"

    let myUrl: String = "https://www.boi.org.il/currency.xml"

    override func viewDidLoad() {
        super.viewDidLoad()
        print("Load XML")

        let url: URL = URL(string: myUrl)!
        parser = XMLParser(contentsOf: url)!
        parser.delegate = self
        let allOK: Bool = parser.parse()
        if allOK {
            print ("we have an xml")
        } else {
            print ("Error in data")
        }
        currenciesTableView.delegate = self
        currenciesTableView.dataSource = self
        //currenciesTableView.register(CurrencyTableViewCell.self, forCellReuseIdentifier: reuseIdentifier)
        // Uncomment the following line to preserve selection between presentations
        // self.clearsSelectionOnViewWillAppear = false

        // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
        // self.navigationItem.rightBarButtonItem = self.editButtonItem
    }

    func parser(_ parser: XMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String] = [:]) {
        //check  if  we have start element
        switch elementName {
        case "NAME":
            passName = true
        case "UNIT":
            passUnit = true
        case "CURRENCYCODE":
            passCurrencyCode = true
        case "COUNTRY":
            passCountry = true
        case "RATE":
            passRate = true
        case "CHANGE":
            passChange = true
        default:
            break
        }
    }

    func parser(_ parser: XMLParser, foundCharacters string: String) {
        if passName{
            names.append(string)
        }
        if  passUnit {
            units.append(string)
        }
        if passCurrencyCode {
            currCodes.append(string)
        }
        if passCountry {
            countries.append(string)
        }
        if passRate {
            rates.append(string)
        }
        if passChange {
            changes.append(string)
        }
    }

    func parser(_ parser: XMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) {
        //check  if  we have end element
        switch elementName {
        case "NAME":
            passName = false
        case "UNIT":
            passUnit = false
        case "CURRENCYCODE":
            passCurrencyCode = false
        case "COUNTRY":
            passCountry = false
        case "RATE":
            passRate = false
        case "CHANGE":
            passChange = false
        default:
            break
        }
    }

    func parser(_ parser: XMLParser, parseErrorOccurred parseError: Error) {
        print ("error:\(parseError)")
    }

    // MARK: - Table view data source

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        // #warning Incomplete implementation, return the number of rows
        return names.count
    }


    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: reuseIdentifier, for: indexPath) as! CurrencyTableViewCell

        cell.nameValueLabel.text = names[indexPath.row]
        cell.unitValueLabel.text = units[indexPath.row]
        cell.currencyCodeValueLabel.text = currCodes[indexPath.row]
        cell.countryValueLabel.text = countries[indexPath.row]
        cell.rateValueLabel.text = rates[indexPath.row]
        cell.changeValueLabel.text = changes[indexPath.row]
        if Double(changes[indexPath.row])! < 0 {
            cell.backgroundColor = .red
        } else {
            cell.backgroundColor = .green
        }

        return cell
    }

    override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return 150
    }
}

//----------- CurrencyTableViewCell.swift -----

import UIKit

class CurrencyTableViewCell: UITableViewCell {

    @IBOutlet var nameValueLabel: UILabel! = UILabel()
    @IBOutlet var unitValueLabel: UILabel! = UILabel()
    @IBOutlet var currencyCodeValueLabel: UILabel! = UILabel()
    @IBOutlet var countryValueLabel: UILabel! = UILabel()
    @IBOutlet var rateValueLabel: UILabel! = UILabel()
    @IBOutlet var changeValueLabel: UILabel! = UILabel()

    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
    }

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)

        // Configure the view for the selected state
    }

}