taler-ios

iOS apps for GNU Taler (wallet)
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QRCodeDetailView.swift (4761B)

      1 /*
      2  * This file is part of GNU Taler, ©2022-26 Taler Systems S.A.
      3  * See LICENSE.md
      4  */
      5 /**
      6  * @author Marc Stibane
      7  */
      8 import SwiftUI
      9 import taler_swift
     10 import AVFoundation
     11 
     12 struct QRCodeDetailView: View {
     13     let talerURI: String
     14     let talerCopyShare: String
     15     let incoming: Bool
     16     let amount: Amount
     17     let scope: ScopeInfo?
     18 
     19     @EnvironmentObject private var controller: Controller
     20     @AppStorage("minimalistic") var minimalistic: Bool = false
     21     @AppStorage("showQRauto16") var showQRauto16: Bool = true
     22     @AppStorage("showQRauto17") var showQRauto17: Bool = false
     23 
     24     @State private var showQRcode = false
     25     @State private var currencyInfo: CurrencyInfo?
     26     @State private var qrImage: UIImage? = nil
     27 
     28     private func currencyTickerChanged() async {
     29         if let scope {
     30             currencyInfo = controller.info(for: scope)
     31         }
     32     }
     33 
     34     private func amountStr(_ currencyInfo : CurrencyInfo?) -> (String, String) {
     35         let amountFormatted: (String, String)
     36         let readable = amount.readableDescription
     37         let myCurrencyInfo = currencyInfo ?? (scope != nil ? controller.info(for: scope!) : nil)
     38         if let myCurrencyInfo {
     39             amountFormatted = amount.formatted(myCurrencyInfo, isNegative: false,
     40                                                useISO: false, a11yDecSep: nil)
     41         } else {
     42             amountFormatted = (readable, readable)
     43         }
     44         return amountFormatted
     45     }
     46 
     47     private func requesting(_ amountS: String) -> String {
     48         minimalistic ? String(localized: "(payer) 1 mini",
     49                            defaultValue: "Requesting \(amountS)",
     50                                 comment: "e.g. '5,3 €'")
     51                      : String(localized: "(payer) 1",
     52                            defaultValue: "Scan this to pay \(amountS)",
     53                                 comment: "e.g. '5,3 €'")
     54     }
     55     private func sending(_ amountS: String) -> String {
     56         minimalistic ? String(localized: "(payee) 1 mini",
     57                            defaultValue: "Sending \(amountS)",
     58                                 comment: "e.g. '$ 7.41'")
     59                      : String(localized: "(payee) 1",
     60                            defaultValue: "Scan this to receive \(amountS)",
     61                                 comment: "e.g. '$ 7.41'")
     62     }
     63 
     64     var body: some View {
     65         if talerURI.count > 10 {
     66             Section {
     67                 let amountStr = amountStr(currencyInfo)
     68                 let scanLong = incoming ? (requesting(amountStr.0), requesting(amountStr.1))
     69                                         : (sending(amountStr.0), sending(amountStr.1))
     70                 let logo = Image(TALER_LOGO_QR)
     71                 let size = 240.0
     72                 let logoSize = 88.0
     73                 let qrView = QRGeneratorView(text: talerURI, size: size, logo: logo, logoSize: logoSize, image: $qrImage)
     74                         .frame(maxWidth: .infinity, alignment: .center)
     75                 if #available(iOS 17.7, *) {
     76                     BorderWithHCE(talerURI: talerURI, nfcHint: true, size: size, scanHints: scanLong) {
     77                         qrView
     78                     }
     79                 } else if showQRcode {
     80                     qrView
     81                 } else {
     82                     let qrCode = Image(systemName: QRCODE)                      // 􀖂 "qrcode"
     83                     Button(minimalistic ? "\(qrCode)" : "\(qrCode) Show QR code") {
     84                         withAnimation { showQRcode = true }
     85                     }.buttonStyle(TalerButtonStyle(type: .prominent))
     86                 }
     87                 CopyShare(textToCopy: talerCopyShare, image: qrImage)
     88                     .disabled(false)
     89 //                  .padding(.bottom)
     90                     .listRowSeparator(.hidden)
     91                 
     92             }
     93             .task(id: controller.currencyTicker) { await currencyTickerChanged() }
     94             .task {
     95                 withAnimation {
     96                     if #available(iOS 17.7, *) {
     97                         showQRcode = showQRauto17
     98                     } else {
     99                         showQRcode = showQRauto16
    100                     }
    101                 }
    102             }
    103         }
    104     }
    105 }
    106 // MARK: -
    107 #if DEBUG
    108 //fileprivate struct ContentView: View {
    109 //    @State var previewURI: String = "taler://pay-push/exchange.demo.taler.net/95ZG4D1AGFGZQ7CNQ1V49D3FT18HXKA6HQT4X3XME9YSJQVFQ520"
    110 //
    111 //    var body: some View {
    112 //        let amount = Amount(currency: LONGCURRENCY, cent: 123)
    113 //        List {
    114 //            QRCodeDetailView(talerURI: previewURI, talerCopyShare: previewURI, incoming: false, amount: amount)
    115 //        }
    116 //    }
    117 //}
    118 //struct QRCodeDetailView_Previews: PreviewProvider {
    119 //
    120 //    static var previews: some View {
    121 //        ContentView()
    122 //    }
    123 //}
    124 #endif