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annotate Functions/Price.swift @ 0:668fd7e0d121

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author Dennis Concepción Martín <66180929+denniscm190@users.noreply.github.com>
date Tue, 05 Jan 2021 16:43:09 +0000
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Dennis Concepción Martín <66180929+denniscm190@users.noreply.github.com>
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1 //
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2 // RequestPrices.swift
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3 // LazyBear
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4 //
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5 // Created by Dennis Concepción Martín on 3/1/21.
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6 //
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7
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8 import SwiftUI
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9
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10 class Price: ObservableObject {
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11 @Published var result = [PriceModel]()
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12 @Published var showingView = false
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13 @Published var showingAlert = false
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14
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15 func request(symbol: String) {
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16 guard let url = URL(string: priceUrl(symbol: symbol, sandbox: true)) else { // Change sandbox when production
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17 print("Invalid URL")
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18 return
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19 }
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20 let request = URLRequest(url: url)
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21 URLSession.shared.dataTask(with: request) { data, response, error in
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22 if let data = data {
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23 if let decodedResponse = try? JSONDecoder().decode([PriceModel].self, from: data) {
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24 // we have good data – go back to the main thread
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25 DispatchQueue.main.async {
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26 // update our UI
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27 self.result = decodedResponse
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28 print("API request ok")
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29
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30 // Check if data is empty
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31 if self.result.isEmpty || self.result.count <= 1 {
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32 print("Data is empty")
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33 self.showingView = false
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34 self.showingAlert = true
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35 } else {
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36 print("Showing view...")
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37 self.showingView = true
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38 }
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39
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40 }
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41
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42 // everything is good, so we can exit
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43 return
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44 }
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45 }
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46
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47 // if we're still here it means there was a problem
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48 print("Fetch failed: \(error?.localizedDescription ?? "Unknown error")")
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49 }.resume()
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50 }
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51 }