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annotate Simoleon/Helpers/ConversionBox.swift @ 19:94fd7ac93060

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author Dennis Concepción Martín <dennisconcepcionmartin@gmail.com>
date Sun, 18 Jul 2021 20:00:05 +0100
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children c3dda63f50ed
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19
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1 //
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2 // ConversionBox.swift
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3 // Simoleon
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4 //
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5 // Created by Dennis Concepción Martín on 18/07/2021.
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6 //
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7
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8 import SwiftUI
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9 import Introspect
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10
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11 struct ConversionBox: View {
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12 @Binding var mainCurrency: String
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13 @Binding var secondaryCurrency: String
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14 @Binding var amountToConvert: String
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15 @Binding var price: Double
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16 @Binding var showingConversion: Bool
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17 @Binding var showingCurrencySelector: Bool
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18 @Binding var currencyPairNotFound: Bool
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19
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20 @State private var showingCancelationButton = false
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21
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22 let currencyMetadata: [String: CurrencyMetadataModel] = parseJson("CurrencyMetadata.json")
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23
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24 var body: some View {
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25 VStack(alignment: .leading) {
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26 Text("\(currencyMetadata[mainCurrency]!.name) (\(mainCurrency))")
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27 .font(.callout)
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28 .fontWeight(.semibold)
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29 .padding(.top, 40)
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30
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31 ZStack(alignment: .trailing) {
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32 TextField("Enter amount", text: $amountToConvert)
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33 .keyboardType(.decimalPad)
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34 .font(Font.title.weight(.semibold))
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35 .lineLimit(1)
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36 .padding(.bottom, 10)
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37 .introspectTextField { textField in
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38 if !showingCurrencySelector {
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39 textField.becomeFirstResponder()
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40 }
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41 }
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42 }
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43
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44 Divider()
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45
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46 Text("\(currencyMetadata[secondaryCurrency]!.name) (\(secondaryCurrency))")
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47 .font(.callout)
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48 .fontWeight(.semibold)
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49 .padding(.top, 10)
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50
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51 if showingConversion {
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52 Text("\(makeConversion(), specifier: "%.2f")")
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53 .font(Font.title.weight(.semibold))
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54 .lineLimit(1)
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55 .padding(.top, 5)
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56 } else {
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57 if currencyPairNotFound {
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58 Text("The currency pair selected is not supported yet 😢")
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59 .padding(.top, 5)
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60 } else {
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61 ProgressView()
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62 .padding(.top, 5)
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63 }
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64 }
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65 }
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66 }
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67
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68
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69 private func makeConversion() -> Double {
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70 if amountToConvert.isEmpty { /// Avoid nil error when string is empty
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71 return 0
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72 } else {
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73 let conversion = Double(amountToConvert)! * price
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74
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75 return conversion
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76 }
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77 }
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78 }
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79
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80
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81 struct ConversionBox_Previews: PreviewProvider {
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82 static var previews: some View {
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83 ConversionBox(mainCurrency: .constant("USD"), secondaryCurrency: .constant("GBP"), amountToConvert: .constant("1000"), price: .constant(1), showingConversion: .constant(true), showingCurrencySelector: .constant(false), currencyPairNotFound: .constant(false))
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84 }
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85 }