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annotate Simoleon/Helpers/CurrencyList.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
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1 //
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2 // CurrencyList.swift
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3 // Simoleon
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4 //
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5 // Created by Dennis Concepción Martín on 20/12/21.
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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
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11 struct CurrencyList: View {
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12 @Binding var baseCurrency: SupportedCurrencyResult
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13 @Binding var quoteCurrency: SupportedCurrencyResult
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14 var selecting: Selection
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15 @Environment(\.dismiss) var dismiss
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16
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17 var body: some View {
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18 NavigationView {
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19 List {
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20 let currencies = getCurrencies()
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21 ForEach(currencies, id: \.self) { currency in
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22 Button(action: { select(currency: currency) }) {
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23 CurrencyRow(currency: currency)
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24 }
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25 }
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26 }
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27 .navigationTitle("Currencies")
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28 .toolbar {
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29 ToolbarItem(placement: .destructiveAction) {
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30 Button(action: { dismiss() }) {
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31 Image(systemName: "multiply.circle.fill")
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32 }
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33 }
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34 }
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35 }
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36 }
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37
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38 // Get compatible currencies given currency code
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39 func getCurrencies() -> [SupportedCurrencyResult] {
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40 let pairs: SupportedPairResponse = readJson(from: "SupportedCurrencies.json")
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41 let currencies: SupportedCurrencyResponse = readJson(from: "SupportedCurrencies.json")
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42 var supportedCurrencies = [SupportedCurrencyResult]()
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43
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44 if selecting == .baseCurrency {
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45 // Get base currencies compatible with quote currency
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46 let currencyPair = pairs.pairs.filter { $0.toCurrency == quoteCurrency.code }
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47 for currencyPair in currencyPair {
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48 let currency = currencies.currencies.filter { $0.code == currencyPair.fromCurrency }
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49 supportedCurrencies.append(contentsOf: currency)
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50 }
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51 } else {
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52 // Get quote currencies compatible with base currencies
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53 let currencyPair = pairs.pairs.filter { $0.fromCurrency == baseCurrency.code }
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54 for currencyPair in currencyPair {
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55 let currency = currencies.currencies.filter { $0.code == currencyPair.toCurrency }
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56 supportedCurrencies.append(contentsOf: currency)
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57 }
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58 }
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59
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60
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61 return supportedCurrencies
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62 }
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63
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64 // Select currency
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65 private func select(currency: SupportedCurrencyResult) {
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66 if selecting == .baseCurrency {
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67 baseCurrency = currency
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68 } else {
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69 quoteCurrency = currency
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70 }
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71
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72 dismiss()
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73 }
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74 }
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75
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76 struct CurrencyList_Previews: PreviewProvider {
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77 static var previews: some View {
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78 CurrencyList(
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79 baseCurrency: .constant(SupportedCurrencyResult(code: "EUR", name: "Euro", isCrypto: 0)),
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80 quoteCurrency: .constant(SupportedCurrencyResult(code: "USD", name: "U.S. Dollar", isCrypto: 0)),
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81 selecting: .baseCurrency
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82 )
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83 }
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84 }