CryptoTrackerDataModel.swift

import Combine
import Foundation
import UIKit

class DataModel: ObservableObject {
  static let url = URL(string: "https://api.coingecko.com/api/v3/coins/dogecoin/tickers")!
  static let imageURL = URL(string: "https://external-preview.redd.it/" +
                              "X-Zf_cxcp7v0EzRWQSG15blQWcsWUwa7wfVIVziAUc.jpg" +
                              "?auto=webp&s=35a8f32cf4fc14756a1adeb1f484259b78befc39")!
  @Published var tickerData: TickerData?
  @Published var image: UIImage?
  @Published var lastRefreshed = ""
  
  func refresh() {
    Self.url.getFromPublisher(property: &$tickerData)
    lastRefreshed = "Last refreshed: \(Date.currentTime)"
  }
  init() {
    if let data = try? Data(contentsOf: Self.imageURL) {
      image = UIImage(data: data)
    }
    refresh()
  }
}