taler-ios

iOS apps for GNU Taler (wallet)
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WalletEmptyView.swift (11971B)

      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 SymLog
     10 import taler_swift
     11 
     12 struct ProdSectionView: View {
     13     let stack: CallStack
     14     @Binding var showRealCashHint: Bool
     15     let isEmpty: Bool
     16     let disabled: Bool
     17 
     18     @Environment(\.colorScheme) private var colorScheme
     19     @Environment(\.colorSchemeContrast) private var colorSchemeContrast
     20     @EnvironmentObject private var controller: Controller
     21     @EnvironmentObject private var model: WalletModel
     22 #if DEBUG
     23     @AppStorage("developerMode") var developerMode: Bool = true
     24 #else
     25     @AppStorage("developerMode") var developerMode: Bool = false
     26 #endif
     27     @AppStorage("preferredColorScheme") var preferredColorScheme: Int = 0
     28     @AppStorage("minimalistic") var minimalistic: Bool = false
     29 
     30     @State private var selectedCurrency: Int = 0
     31 
     32     func buttonAction() {
     33         withAnimation {
     34             showRealCashHint.toggle()
     35         }
     36     }
     37 
     38     var body: some View {
     39         let defaultExchanges = controller.defaultExchanges
     40         let count = defaultExchanges.count
     41         let section = Section {
     42             let chevron = Image(systemName: CHEVRON_UP)     // 􀆇
     43             if isEmpty {
     44                 Text("Welcome to Taler Wallet!")
     45                     .talerFont(.headline)
     46                 Text("To make your first payment, withdraw digital cash.")
     47                     .talerFont(.body)
     48             } else {
     49                 let withdraw = Text("Withdraw real digital cash:")
     50                     .talerFont(.body)
     51                 Button(action: buttonAction) {
     52                     HStack(alignment: .firstTextBaseline) {
     53                         if minimalistic {
     54                             withdraw
     55                         } else {
     56                             Text("Currently you have only demo cash.")
     57                                 .talerFont(.body)
     58                         }
     59                         Spacer()
     60                         chevron.rotationEffect(.degrees((showRealCashHint ?  -180 : 0)))
     61                             .accessibilityHidden(true)
     62                     }
     63                     .accessibilityElement(children: .combine)
     64                     .accessibilityHint(Text(showRealCashHint ? "Hide available real money withdrawals"
     65                                                              : "Show available real money withdrawals"))
     66                     .contentShape(.rect)    // can tap in background also
     67                 }   .buttonStyle(.plain)
     68                 if showRealCashHint && !minimalistic {
     69                     withdraw
     70                         .padding(.vertical, -16)
     71                 }
     72             }
     73 #if false
     74             let qrButton = Image(systemName: QRBUTTON)                      // 􀎻 "qrcode.viewfinder"
     75             let settings = Image(systemName: SETTINGS)                      // 􀍟 "gear"
     76             Text("Use «\(qrButton) Scan QR code» in the Actions menu to start a withdrawal if your bank already supports Taler payments.", comment: "« 􀎻 » 'qrcode.viewfinder'")
     77                 .talerFont(.body)
     78             Text("You can also add a payment service manually in the \(settings) Settings tab.", comment: "« 􀍟 » 'gear'")
     79                 .talerFont(.body)
     80 #endif
     81             if (showRealCashHint) {
     82                 if developerMode {
     83                     if defaultExchanges.count > 1 {
     84                         CurrencyPicker(stack: stack.push(), value: $selectedCurrency,
     85                                    exchanges: defaultExchanges) { index in
     86                             selectedCurrency = index
     87                         }
     88                     }
     89                 }
     90                 let defaultExchange = defaultExchanges[selectedCurrency < count ? selectedCurrency : 0]
     91                 let currency = defaultExchange.currency
     92                 let title = String(localized: "LinkTitle_Withdraw", defaultValue: "Withdraw \(currency)")
     93                 Button(title) {
     94                     if let talerUri = URL(string: defaultExchange.talerUri) {
     95                         controller.talerURI = talerUri
     96                     }
     97                 }
     98                 .buttonStyle(TalerButtonStyle(type: isEmpty ? .prominent : .bordered,
     99                                             narrow: false,
    100                                           disabled: disabled,
    101                                            aligned: .center))
    102                 .padding(.top, -6)
    103                 .padding(.bottom, 6)
    104             } // showDropdown
    105         } header: {
    106             if isEmpty {
    107                 let firstHeader = EMPTYSTRING
    108                 Text(firstHeader)
    109                     .talerFont(.badge)
    110 //                    .foregroundColor(.primary)
    111                 /// YIKES! when not specifying this color, the Text in the BarGraphHeader vanishes!!!
    112                     .foregroundColor(WalletColors().secondary2(colorScheme, colorSchemeContrast))
    113 //                    .listRowInsets(EdgeInsets())  // << here !!
    114             }
    115         }
    116         .listRowSeparator(.hidden)
    117 //        .listSectionSpacing(.compact) iOS 17
    118 
    119         if preferredColorScheme == 3, #available(iOS 17.0, *) {
    120             section.listRowBackground(Color.white.opacity(0.1))
    121         } else {
    122             section
    123         }
    124     }
    125 }
    126 // MARK: -
    127 /// This view shows hints if a wallet is empty
    128 /// It is the very first thing the user sees after installing the app
    129 struct WalletEmptyHeader: View {
    130     let stack: CallStack
    131     @Binding var showRealCashHint: Bool
    132 
    133     @EnvironmentObject private var controller: Controller
    134 
    135     func refresh() async {
    136         controller.hapticNotification(.success)
    137 //        symLog.log("refreshing balances")
    138         await controller.loadBalances(stack.push("refreshing balances"))
    139     }
    140 
    141     var body: some View {
    142         let emptyView =  WalletEmptyView(stack: stack.push("isEmpty"),
    143                               showRealCashHint: $showRealCashHint)
    144 //                  .navigationTitle("Taler Wallet")
    145             .refreshable {
    146                 await refresh()
    147             }
    148         WalletHeader(showSettings: true, content: emptyView)
    149     }
    150 }
    151 // MARK: -
    152 struct WalletHeader<Content: View> : View {
    153     let showSettings: Bool
    154     let content: Content
    155 
    156     @Environment(\.accessibilityVoiceOverEnabled) private var voiceOverEnabled
    157 
    158     var body: some View {
    159         let talerLogo = HStack(spacing: 2) {
    160             Image(TALER_LOGO_FULL)
    161 //                .border(Color.gray, width: 1)
    162 //            Text("TALER Wallet")
    163             Text("Wallet")
    164 //                .font(.logo(27, weight: .medium))
    165                 .font(.logo("Atkinson Hyperlegible Next", size: 27, weight: .medium))
    166                 .kerning(1.0)
    167                 .fixedSize(horizontal: true, vertical: true)
    168         }
    169             .accessibilityElement(children: .combine)
    170             .accessibilityAddTraits(.isHeader)
    171             .accessibilityLabel(Text("Taler Wallet", comment: "a11y"))
    172 
    173 
    174         let logoItem = ToolbarItem(placement: .principal) {
    175             talerLogo
    176                 .padding(.top, 10)
    177         }
    178         if showSettings, #available(iOS 26.0, *) {
    179             if voiceOverEnabled {
    180                 content
    181                     .toolbar { logoItem }
    182             } else {
    183                 content
    184                     .toolbar {
    185                         ToolbarItem(placement: .principal) {
    186                             HStack {
    187                                 SettingsButton26(sortPriority: 0)
    188                                     .hidden()
    189                                 Spacer()
    190                                 talerLogo
    191                                     .padding(.top, 10)
    192                                 Spacer()
    193                                 SettingsButton26(sortPriority: 0)
    194                                     .offset(x: 16, y: 0)
    195                             }
    196                         }
    197                     }
    198             }
    199         } else { // iOS 15..18 Settings is the 3rd tab
    200             content
    201                 .toolbar { logoItem }
    202         }
    203     }
    204 }
    205 // MARK: -
    206 struct WalletEmptyView: View {
    207     private let symLog = SymLogV(0)
    208     let stack: CallStack
    209     @Binding var showRealCashHint: Bool
    210 
    211     @EnvironmentObject private var controller: Controller
    212     @EnvironmentObject private var model: WalletModel
    213     @AppStorage("myListStyle") var myListStyle: MyListStyle = .automatic
    214     @AppStorage("preferredColorScheme") var preferredColorScheme: Int = 0
    215     @State private var withDrawStarted = false
    216     @State private var urlToOpen: URL? = nil
    217 
    218     var body: some View {
    219         let list = List {
    220             if !controller.defaultExchanges.isEmpty {
    221                 ProdSectionView(stack: stack.push(),
    222                      showRealCashHint: $showRealCashHint,
    223                               isEmpty: true, disabled: withDrawStarted)
    224             }
    225 #if GNU_TALER
    226                 Text("If you don't have a Swiss bank account, you can simply try out the demo…")
    227                     .talerFont(.body)
    228 #endif
    229 
    230 #if DEBUG
    231 //              if developerMode {
    232 //                Text("Either deposit or send your money to a friend before you delete the app, or it will be lost.")
    233 //                    .talerFont(.body)
    234 //              }
    235 #endif
    236             let section = Section {
    237 //                Text("Demo")
    238 //                    .talerFont(.headline)
    239 //                Text("Get digital cash to experience how easy you can pay online, and send money to friends & family.")
    240                 Text("Get demo cash to experience how to pay with digital cash.")
    241 //                Text("Get digital cash to experience how to pay with the money of the future.")
    242                     .talerFont(.body)
    243                     .listRowSeparator(.hidden)
    244                 let title = String(localized: "LinkTitle_Test_Money", defaultValue: "Get demo cash")
    245                 Button(title) {
    246                     withDrawStarted = true    // don't run twice
    247                     Task { // runs on MainActor
    248                         let amount = Amount(currency:  DEMOCURRENCY, cent: DEMOAMOUNT)
    249                         symLog.log("Withdraw 25 KUDOS")
    250                         try? await model.loadTestKudos(0, amount: amount)
    251                         DispatchQueue.main.asyncAfter(deadline: .now() + 5) {
    252                             withDrawStarted = false
    253                         }
    254                     }
    255                 }
    256                 .buttonStyle(TalerButtonStyle(type: .prominent, narrow: false, disabled: withDrawStarted, aligned: .center))
    257                 .disabled(withDrawStarted)
    258 //            } header: {
    259 //                let secondHeader = String(localized: "Demo", comment: "section header")
    260 //                Text(secondHeader)
    261 //                    .talerFont(.title3)
    262 //                    .foregroundColor(WalletColors().secondary(colorScheme, colorSchemeContrast))
    263             }
    264             if preferredColorScheme == 3, #available(iOS 17.0, *) {
    265                 section.listRowBackground(Color.white.opacity(0.1))
    266             } else {
    267                 section
    268             }
    269         }
    270             .listStyle(myListStyle.style).anyView
    271             .talerFont(.title2)
    272             .background(FullBackground())
    273         ZStack {
    274             if preferredColorScheme == 3, #available(iOS 17.0, *) {
    275                 list.scrollContentBackground(.hidden)
    276             } else {
    277                 list
    278             }
    279             if withDrawStarted {
    280                 RotatingTaler(size: 150, progress: true, once: false,
    281                         background: nil,
    282                    rotationEnabled: $withDrawStarted)
    283             }
    284         }
    285         .onAppear() {
    286             DebugViewC.shared.setViewID(VIEW_EMPTY_WALLET, stack: stack.push("onAppear"))     // 10
    287         }
    288     }
    289 }
    290 // MARK: -
    291 struct WalletEmptyView_Previews: PreviewProvider {
    292     static var previews: some View {
    293         WalletEmptyView(stack: CallStack("Preview"),
    294              showRealCashHint: Binding.constant(true))
    295     }
    296 }