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annotate Simoleon/Favorites.swift @ 151:bdedd0cc6cd1

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Add test flag existence
author Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
date Thu, 19 Aug 2021 19:13:04 +0100
parents 23395b98a921
children
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1 //
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2 // Favorites.swift
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3 // Simoleon
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4 //
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5 // Created by Dennis Concepción Martín on 19/07/2021.
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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 struct Favorites: View {
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11 @Environment(\.managedObjectContext) private var viewContext
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12 @FetchRequest(
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13 sortDescriptors: [NSSortDescriptor(keyPath: \Favorite.currencyPair, ascending: true)],
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14 animation: .default) private var favorites: FetchedResults<Favorite>
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16 var body: some View {
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17 VStack {
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18 if favorites.isEmpty {
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19 Group {
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20 Image(systemName: "star")
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21 .font(.title)
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22
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23 Text("Search a currency pair and add it to favorites.")
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24 .padding(.top, 5)
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25 }
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26 .multilineTextAlignment(.center)
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27 .foregroundColor(.secondary)
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28 .padding(.horizontal, 50)
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29 } else {
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30 List {
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31 ForEach(favorites) { favorite in
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32 NavigationLink(destination: Conversion(showNavigationView: false, currencyPair: favorite.currencyPair)) {
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33 CurrencyRow(currencyPairName: favorite.currencyPair)
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34 }
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35 }
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36 .onDelete(perform: removeFromFavorites)
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37 }
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38 .listStyle(PlainListStyle())
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39 .accessibilityIdentifier("FavoritesList")
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40 }
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41 }
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42 .navigationTitle("Favorites")
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43 .toolbar {
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44 #if os(iOS)
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45 EditButton()
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46 #endif
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47 }
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48 .if(UIDevice.current.userInterfaceIdiom == .phone) { content in
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49 NavigationView { content }
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50 }
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51 .onAppear {
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52 #if SCREENSHOTS
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53 generateFavoritesForScreenshots()
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54 #endif
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55 }
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56 }
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58 private func removeFromFavorites(offsets: IndexSet) {
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59 withAnimation {
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60 offsets.map { favorites[$0] }.forEach(viewContext.delete)
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61
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62 do {
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63 try viewContext.save()
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64 } catch {
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65 let nsError = error as NSError
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66 fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
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67 }
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68 }
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69 }
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71 #if SCREENSHOTS
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72 /*
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73 Save currencies to favourites to take screenshots for the App Store
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74 */
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75 private func generateFavoritesForScreenshots() {
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76 let favoriteCurrencies = [
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77 "EUR/USD", "BTC/USD", "USD/HKD", "USD/JPY", "AUD/USD",
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78 "XAU/GBP", "DASH/ETH", "EUR/USD", "XAG/CAD"
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79 ]
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80
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81 let coreDataCurrencyPairs = favorites.map { $0.currencyPair }
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82
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83 for favoriteCurrency in favoriteCurrencies {
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84 if !coreDataCurrencyPairs.contains(favoriteCurrency) {
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85 let favorites = Favorite(context: viewContext)
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86 favorites.currencyPair = favoriteCurrency
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88 do {
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89 try viewContext.save()
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90 } catch {
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91 let nsError = error as NSError
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92 fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
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93 }
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94 }
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95 }
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96 }
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97 #endif
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98 }
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99
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100 struct Favorites_Previews: PreviewProvider {
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101 static var previews: some View {
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102 Favorites()
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103 .environment(\.managedObjectContext, PersistenceController.preview.container.viewContext)
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104 }
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105 }