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annotate Simoleon/ConversionView.swift @ 187:13d5a8deb6c2

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add AboutView and FavoritesView
author Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
date Thu, 23 Dec 2021 16:12:22 +0100
parents 1ebd1c5dd302
children e4f5dcf4d596
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1 //
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2 // ConversionView.swift
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3 // Simoleon
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4 //
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5 // Created by Dennis Concepción Martín on 8/12/21.
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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 struct ConversionView: View {
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11 var showNavigationView: Bool?
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12
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13 // CurrencySelector variables
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14 @State var baseCurrency: SupportedCurrencyResult
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15 @State var quoteCurrency: SupportedCurrencyResult
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16 @State private var showingCurrencyList = false
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17 @State private var selecting: Selection = .baseCurrency
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18
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19 // CurrencyTextfield variables
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20 @State private var amount = "1"
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21
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22 // CurrencyConversion variables
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23 @State private var showConversion = false
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24 @State private var latestRate = CurrencyLatestRateResponse(message: [CurrencyLatestRateResult]())
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25
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26 // Update currency rates
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27 @State private var timer = Timer.publish(every: 3, on: .main, in: .common).autoconnect()
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28
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29 var body: some View {
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30 ScrollView(showsIndicators: false) {
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31 VStack(alignment: .leading, spacing: 20) {
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32 // MARK: - Currency selector
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33 HStack {
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34 Button(action: { showCurrencyList(selecting: .baseCurrency) }) {
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35 CurrencySelectorLabel(currency: baseCurrency)
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36 }
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37
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38 Button(action: { showCurrencyList(selecting: .quoteCurrency)}) {
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39 CurrencySelectorLabel(currency: quoteCurrency)
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40 }
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41
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42 // MARK: - Favorite button
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43 FavoriteButton(baseCurrency: $baseCurrency, quoteCurrency: $quoteCurrency)
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44
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45 }
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46 .padding(.bottom)
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47
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48 // MARK: - Conversion box
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49 Text("\(baseCurrency.code) - \(baseCurrency.name)")
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50 .font(.callout)
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51 .fontWeight(.semibold)
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52
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53 CurrencyTextfield(currencyCode: baseCurrency.code, amount: $amount)
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54
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55 Divider()
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56 Text("\(quoteCurrency.code) - \(quoteCurrency.name)")
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57 .font(.callout)
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58 .fontWeight(.semibold)
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59
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60 CurrencyConversion(
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61 latestRate: latestRate,
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62 currencyCode: quoteCurrency.code,
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63 amount: $amount
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64 )
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65 }
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66 .padding(.horizontal)
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67 .sheet(isPresented: $showingCurrencyList) {
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68 CurrencyList(baseCurrency: $baseCurrency, quoteCurrency: $quoteCurrency, selecting: selecting)
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69 }
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70 }
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71 .onAppear {
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72 getConversion()
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73 timer = Timer.publish(every: 3, on: .main, in: .common).autoconnect()
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74 }
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75 .onReceive(timer) { _ in
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76 getConversion()
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77 }
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78 .onDisappear {
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79 timer.upstream.connect().cancel()
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80 }
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81 .navigationTitle("Convert")
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82 .if(UIDevice.current.userInterfaceIdiom == .phone && showNavigationView ?? true) { content in
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83 NavigationView { content }
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84 }
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85 }
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86
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87 // Change selection and show CurrencyList()
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88 private func showCurrencyList(selecting: Selection) {
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89 self.selecting = selecting
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90 showingCurrencyList.toggle()
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91 }
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92
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93 // Request conversion
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94 private func getConversion() {
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95 let currencyPair = "\(baseCurrency.code)\(quoteCurrency.code)"
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96 let url = "https://api.simoleon.app/fx/latest?symbols=\(currencyPair)"
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97 httpRequest(url: url, model: CurrencyLatestRateResponse.self) { response in
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98 latestRate = response
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99 if latestRate.message.isEmpty {
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100 // Handle exception
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101 } else {
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102 showConversion = true
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103 }
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104 }
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105 }
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106 }
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107
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108 enum Selection {
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109 case baseCurrency, quoteCurrency
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110 }
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111
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112 struct ConversionView_Previews: PreviewProvider {
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113 static var previews: some View {
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114 ConversionView(
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115 baseCurrency: SupportedCurrencyResult(code: "EUR", name: "Euro", isCrypto: 0),
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116 quoteCurrency: SupportedCurrencyResult(code: "USD", name: "U.S. Dollar", isCrypto: 0)
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117 )
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118 }
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119 }