Making func to share text with shareButton in iOS - json

Question

I'm new at programming at all, trying making app with country's info (capital, language, currencies etc.).
For now all working except one thing. I want make button to share text info about country. And at this place start's troubles, I can't write method to share my currencies and language info. I write func to capture one currency from each country, but I don't understand how to iterate through my currencies and languages, to get all values if country have more than 1 currency and language. I understand how to do it in my tableView method, using indexPath for this, but can't understand how do it this at another function. Sorry for my English :) It's not my native language.
I parse JSON from RestCountries. This is my struct to parse JSON:
struct Country: Codable {
let name: Name
let cca2: String
let capital: [String]?
let population: Int
let currencies: [String: Currency]?
let languages: [String: String]?
}
struct Name: Codable {
let common: String
let official: String
}
struct Currency: Codable {
let name: String?
let symbol: String?
}
This is my DetailViewController:
import UIKit
class DetailViewController: UITableViewController {
var country: Country!
let flag = "Flag"
let general = "General"
let currency = "Currency"
let language = "Languages"
var currencyText = ""
lazy var languages = country.languages?.sorted { $0.0 < $1.0 }
lazy var sectionTitles = [flag, general, currency, language]
lazy var currencies = country.currencies?.sorted { $0.0 < $1.0 }
override func viewDidLoad() {
super.viewDidLoad()
title = country.name.common
navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .action, target: self, action: #selector(shareTapped))
}
override func numberOfSections(in tableView: UITableView) -> Int {
return sectionTitles.count
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return sectionTitles[section]
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
switch sectionTitles[section] {
case flag:
return 1
case general:
return 4
case currency:
// How make to return proper number's of rows??
return currencies?.count ?? 0
case language:
return country.languages?.count ?? 0
default:
return 0
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
switch sectionTitles[indexPath.section] {
case flag:
let cell = tableView.dequeueReusableCell(withIdentifier: "Flag", for: indexPath)
if let cell = cell as? FlagCell {
cell.flagImageView.image = UIImage(named: country.cca2.lowercased())
}
return cell
case general:
let cell = tableView.dequeueReusableCell(withIdentifier: "Text", for: indexPath)
cell.textLabel?.numberOfLines = 0
switch indexPath.row {
case 0:
cell.textLabel?.text = "Common country name: \(country.name.common)"
case 1:
cell.textLabel?.text = "Official country name: \(country.name.official)"
case 2:
cell.textLabel?.text = "Capital: \(country.capital?[0] ?? "Unknown")"
case 3:
cell.textLabel?.text = "Population: \(country.population) people"
default:
return cell
}
return cell
case currency:
let cell = tableView.dequeueReusableCell(withIdentifier: "Text", for: indexPath)
cell.textLabel?.numberOfLines = 0
if let (code, currency) = currencies?[indexPath.row] {
let currencyCode = code
let currencyName = currency.name ?? ""
let currencySymbol = currency.symbol ?? ""
cell.textLabel?.text = "Code: \(currencyCode), Currency: \(currencyName), Symbol: \(currencySymbol)"
}
return cell
case language:
let cell = tableView.dequeueReusableCell(withIdentifier: "Text", for: indexPath)
cell.textLabel?.numberOfLines = 0
if let (_, language) = languages?[indexPath.row] {
cell.textLabel?.text = "Language: \(language)"
}
return cell
default:
break
}
return UITableViewCell ()
}
#objc func shareTapped () {
currenciesText()
let shareFlag = UIImage(named: country.cca2.lowercased())
let shareText = """
General
\(country.name.common)
\(country.name.official)
\(country.capital?[0] ?? "")
\(country.population)
Currencies
\(currencyText)
"""
let vc = UIActivityViewController(activityItems: [shareFlag!, shareText], applicationActivities: [])
vc.popoverPresentationController?.barButtonItem = navigationItem.rightBarButtonItem
present(vc, animated: true)
}
func currenciesText () {
// How to make this work if country have more than 1 currency?
if let (code, currency) = currencies?[0] {
let currencyCode = code
let currencyName = currency.name ?? ""
let currencySymbol = currency.symbol ?? ""
currencyText = "\(currencyName) (\(currencyCode), \(currencySymbol))"
}
}
}
I'm totally lost in all this loops, this must be the way use for-in, but all things I try Xcode don't like :))) Please help! :)