taler-ios

iOS apps for GNU Taler (wallet)
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BalancesListView.swift (5686B)

      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 SymLog
     11 import AVFoundation
     12 
     13 /// This view shows the list of balances / currencies, each in its own section
     14 struct BalancesListView: View {
     15     private let symLog = SymLogV(0)
     16     let stack: CallStack
     17     let title: String
     18     @Binding var selectedBalance: Balance?                      // set in TransactionsListView
     19     @Binding var reloadTransactions: Int
     20 
     21     @EnvironmentObject private var model: WalletModel
     22     @EnvironmentObject private var controller: Controller
     23     @Environment(\.accessibilityVoiceOverEnabled) private var voiceOverEnabled
     24     @AppStorage("myListStyle") var myListStyle: MyListStyle = .automatic
     25     @AppStorage("preferredColorScheme") var preferredColorScheme: Int = 0
     26     @AppStorage("oimEuro") var oimEuro: Bool = false
     27 
     28     @State private var amountToTransfer = Amount.zero(currency: EMPTYSTRING)    // Update currency when used
     29     @State private var summary = EMPTYSTRING
     30     @State private var showRealCashHint = true
     31 
     32     @State private var historyTapped: Int? = nil
     33     @Namespace var namespace
     34 
     35     private static func className() -> String {"\(self)"}
     36 
     37     func refresh() async {
     38         controller.hapticNotification(.success)
     39         symLog.log("refreshing balances")
     40         await controller.loadBalances(stack.push("refreshing balances"), model)
     41     }
     42 
     43     @ViewBuilder
     44     func balancesList() -> some View {
     45         let count = controller.balances.count
     46         let list = List {
     47             if !controller.haveProdBalance && !controller.defaultExchanges.isEmpty {
     48                 ProdSectionView(stack: stack.push(),
     49                      showRealCashHint: $showRealCashHint,
     50                               isEmpty: false,
     51                              disabled: false)
     52             }
     53             ForEachWithIndex(data: controller.balances) { index, balance in
     54                 BalancesSectionView(stack: stack.push("\(balance.scopeInfo.currency)"),
     55                                   balance: balance,                     // this is the currency to be used
     56                           selectedBalance: $selectedBalance,            // set in TransactionsListView
     57                              balanceIndex: index,
     58                              sectionCount: count,
     59                          amountToTransfer: $amountToTransfer,           // does still have the wrong currency
     60                                   summary: $summary,
     61                             historyTapped: $historyTapped,
     62                        reloadTransactions: $reloadTransactions)
     63             }
     64 #if DEBUG || TALER_NIGHTLY
     65             if count > 1 {      // otherwise it comes before recentTransactions
     66                 DiscountPassesSection(stack: stack.push())
     67             }
     68 #endif
     69         }
     70             .listStyle(myListStyle.style).anyView
     71             .background(FullBackground())
     72             .onAppear() {
     73                 DebugViewC.shared.setViewID(VIEW_BALANCES, stack: stack.push("onAppear"))
     74                 if !controller.oimModeActive {
     75                     print("🚩BalancesListView.onAppear() reset selectedBalance")
     76 //                  if count > 1 {
     77                         selectedBalance = nil                           // reset
     78 //                  }
     79                 }
     80             }
     81             .refreshable {
     82                 await refresh()
     83             }
     84             .navigationTitle(title)
     85         if #available(iOS 26.0, *) {
     86             let list26 = list
     87                 .toolbar {
     88                     ToolbarItem(placement: .topBarTrailing) {   //secondaryAction
     89                         SettingsButton26(sortPriority: 0)
     90                     }
     91                 }
     92 #if OIM
     93             if controller.oimModeActive || voiceOverEnabled {
     94                 list    // hide SettingsButton (in Toolbar)
     95             } else {
     96                 list26
     97             }
     98 #else
     99             list26
    100 #endif
    101         } else {
    102             list
    103         }
    104     }
    105 
    106     var body: some View {
    107 #if PRINT_CHANGES
    108         let _ = Self._printChanges()
    109         let _ = symLog.vlog()       // just to get the # to compare it with .onAppear & onDisappear
    110 #endif
    111         /// In standard mode, selectedBalance just sets a "preference" which balance to pre-select for Actions.
    112         ///   However, the user can select another balance (with the picker) in each action
    113         /// In OIM mode, the user selects a balance 'here' (in OIMView) when tapping on a savings box (representing the balance)
    114 
    115         let list = balancesList()
    116             .onChange(of: controller.oimModeActive) { oimModeActive in
    117                 if !oimModeActive {
    118                     print("🚩BalancesListView.onChange(of: oimModeActive) reset selectedBalance")
    119 //                    if count > 1 {
    120                         selectedBalance = nil                               // reset
    121 //                    }
    122                  }
    123             }
    124         ZStack {
    125             if preferredColorScheme == 3, #available(iOS 17.0, *) {
    126                 list.scrollContentBackground(.hidden)
    127             } else {
    128                 list
    129             }
    130         }
    131             .overlay { if #available(iOS 16.4, *) {
    132                 if controller.oimModeActive {
    133 #if OIM
    134                     OIMbalances(stack: stack.push(),
    135                       selectedBalance: $selectedBalance,                    // set to user choice
    136                         historyTapped: $historyTapped,
    137                               oimEuro: oimEuro)
    138                         .environmentObject(NamespaceWrapper(namespace))         // keep OIMviews apart
    139 #endif // OIM
    140                 }
    141             } }
    142     }
    143 }