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annotate Simoleon/Favorites.swift @ 136:d3dc19a60f8c

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Add Screenshots build config
author Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
date Mon, 16 Aug 2021 19:01:29 +0100
parents 87f02d4f9c26
children 738fbd3ca671
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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 favourites.")
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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 }
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40 }
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41 .navigationTitle("Favorites")
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42 .toolbar {
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43 #if os(iOS)
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44 EditButton()
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45 #endif
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46 }
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47 .if(UIDevice.current.userInterfaceIdiom == .phone) { content in
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48 NavigationView { content }
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49 }
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50 .onAppear {
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51 #if SCREENSHOTS
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52 generateFavoritesForScreenshots()
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53 #endif
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54 }
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55 }
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56
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57 private func removeFromFavorites(offsets: IndexSet) {
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58 withAnimation {
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59 offsets.map { favorites[$0] }.forEach(viewContext.delete)
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60
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61 do {
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62 try viewContext.save()
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63 } catch {
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64 let nsError = error as NSError
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65 fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
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66 }
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67 }
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68 }
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70 #if SCREENSHOTS
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71 /*
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72 Save currencies to favourites to take screenshots for the App Store
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73 */
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74 private func generateFavoritesForScreenshots() {
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75 let favoriteCurrencies = [
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76 "EUR/USD", "BTC/USD", "USD/HKD", "USD/JPY", "AUD/USD",
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77 "XAU/GBP", "DASH/ETH", "EUR/USD", "XAG/CAD"
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78 ]
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79
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80 let coreDataCurrencyPairs = favorites.map { $0.currencyPair }
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81
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82 for favoriteCurrency in favoriteCurrencies {
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83 if !coreDataCurrencyPairs.contains(favoriteCurrency) {
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84 let favorites = Favorite(context: viewContext)
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85 favorites.currencyPair = favoriteCurrency
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86
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87 do {
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88 try viewContext.save()
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89 } catch {
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90 let nsError = error as NSError
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91 fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
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92 }
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93 }
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94 }
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95 }
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96 #endif
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97 }
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98
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99 struct Favorites_Previews: PreviewProvider {
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100 static var previews: some View {
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101 Favorites()
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102 .environment(\.managedObjectContext, PersistenceController.preview.container.viewContext)
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103 }
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104 }