taler-ios

DepositAmountView.swift (10058B)

---

 /*
  * This file is part of GNU Taler, ©2022-25 Taler Systems S.A.
  * See LICENSE.md
  */
 /**
  * @author Marc Stibane
  */
 import SwiftUI
 import taler_swift
 import SymLog
 
 // Called from DepositAmountV
 struct DepositAmountView: View {
     private let symLog = SymLogV(0)
     let stack: CallStack
     @Binding var balance: Balance?
     @Binding var balanceIndex: Int
     @Binding var amountLastUsed: Amount
     @Binding var amountToTransfer: Amount
     let amountAvailable: Amount
     let paytoUri: String?
 
     @EnvironmentObject private var controller: Controller
     @EnvironmentObject private var model: WalletModel
     @Environment(\.colorScheme) private var colorScheme
     @Environment(\.colorSchemeContrast) private var colorSchemeContrast
     @AppStorage("minimalistic") var minimalistic: Bool = false
 
     @State var checkDepositResult: CheckDepositResponse? = nil
     @State private var insufficient = false
     @State private var feeAmount: Amount? = nil
     @State private var feeStr: String = EMPTYSTRING
     @State private var depositStarted = false
     @State private var exchange: Exchange? = nil                                // wg. noFees
 
     public static func navTitle(_ currency: String = EMPTYSTRING,
                                _ condition: Bool = false
     ) -> String {
         condition ? String(localized: "NavTitle_Deposit_Currency",
                         defaultValue: "Deposit \(currency)",
                              comment: "currencySymbol")
                   : String(localized: "NavTitle_Deposit",
                         defaultValue: "Deposit")
     }
 
     private func feeLabel(_ feeString: String) -> String {
         feeString.count > 0 ? String(localized: "+ \(feeString) fee")
                             : EMPTYSTRING
     }
 
     private func feeIsNotZero() -> Bool? {
         if let hasNoFees = exchange?.noFees {
             if hasNoFees {
                 return nil      // this exchange never has fees
             }
         }
         return checkDepositResult == nil ? false
                                          : true // TODO: !(feeAmount?.isZero ?? false)
     }
 
     @MainActor
     private func computeFeeDeposit(_ amount: Amount) async -> ComputeFeeResult? {
         if amount.isZero {
             return ComputeFeeResult.zero()
         }
         let insufficient = (try? amount > amountAvailable) ?? true
         if insufficient {
             return ComputeFeeResult.insufficient()
         }
 //    private func fee(ppCheck: CheckDepositResponse?) -> Amount? {
         do {
 //            if let ppCheck {
 //                // Outgoing: fee = effective - raw
 //                feeAmount = try ppCheck.fees.coin + ppCheck.fees.wire + ppCheck.fees.refresh
 //                return feeAmount
 //            }
         } catch {
 
         }
         return nil
     }
 
     private func buttonTitle(_ amount: Amount) -> String {
         if let balance {
             let amountWithCurrency = amount.formatted(balance.scopeInfo, isNegative: false, useISO: true)
             return DepositAmountView.navTitle(amountWithCurrency.0, true)
         }
         return DepositAmountView.navTitle()             // should never happen
     }
 
     @MainActor
     private func startDeposit(_ scope: ScopeInfo) {
         if let paytoUri {
             depositStarted = true    // don't run twice
             Task {
                 symLog.log("Deposit")
                 if let result = try? await model.createDepositGroup(paytoUri,
                                                              scope: scope,
                                                             amount: amountToTransfer) {
                     symLog.log(result.transactionId)
                     if let txState = result.txState {
                         if txState.isKYC || txState.isKYCauth {
                             symLog.log("Deposit KYC")
 
                         } else {
 //                          ViewState2.shared.popToRootView(stack.push())
                             NotificationCenter.default.post(name: .TransactionDone, object: nil, userInfo: nil)
                             dismissTop(stack.push())
                         }
                     }
                 } else {
                     depositStarted = false
                 }
             }
         }
     }
 
     var body: some View {
 #if PRINT_CHANGES
         let _ = Self._printChanges()
         let _ = symLog.vlog()       // just to get the # to compare it with .onAppear & onDisappear
 #endif
         if depositStarted {
             let message = String(localized: "Depositing...", comment: "loading")
             LoadingView(stack: stack.push(), scopeInfo: nil, message: message)
                 .navigationBarBackButtonHidden(true)
                 .interactiveDismissDisabled()           // can only use "Done" button to dismiss
                 .safeAreaInset(edge: .bottom) {
                     let buttonTitle = String(localized: "Abort", comment: "deposit")
                     Button(buttonTitle) { dismissTop(stack.push()) }
                         .buttonStyle(TalerButtonStyle(type: .prominent))
                         .padding(.horizontal)
                 }
         } else { Group {
             if let balance {
                 let scopeInfo = balance.scopeInfo
                 let availableStr = amountAvailable.formatted(scopeInfo, isNegative: false)
 
                 let currencyInfo = controller.info(for: scopeInfo, controller.currencyTicker)
 //                let amountVoiceOver = amountToTransfer.formatted(scopeInfo, isNegative: false)
                 let insufficientLabel = String(localized: "You don't have enough \(currencyInfo.specs.name).")
 //                let insufficientLabel2 = String(localized: "but you only have \(available) to deposit.")
 
                 let disabled = insufficient || amountToTransfer.isZero
 
                 Text("Available: \(availableStr.0)")
                     .accessibilityLabel(Text("Available: \(availableStr.1)", comment: "a11y"))
                     .talerFont(.title3)
                     .frame(maxWidth: .infinity, alignment: .trailing)
                     .padding(.horizontal)
 //                    .padding(.bottom, 2)
                 let a11yLabel = String(localized: "Amount to deposit:", comment: "a11y, no abbreviations")
                 let amountLabel = minimalistic ? String(localized: "Amount:")
                                                : a11yLabel
                 CurrencyInputView(scope: scopeInfo,
                                  amount: $amountToTransfer,
                          amountLastUsed: amountLastUsed,
                               available: amountAvailable,       // enable shortcuts if available >= value
                                   title: amountLabel,
                               a11yTitle: a11yLabel,
                          shortcutAction: nil)
                     .padding(.horizontal)
 
                 Text(insufficient ? insufficientLabel
                                   : feeLabel(feeStr))
                     .talerFont(.body)
                     .foregroundColor(insufficient ? WalletColors().attention
                                                   : (feeAmount?.isZero ?? true) ? WalletColors().secondary(colorScheme, colorSchemeContrast)
                                                                                 : WalletColors().negative)
                     .padding(4)
                 let hint = String(localized: "enabled when amount is non-zero, but not higher than your available amount",
                                     comment: "a11y")
                 Button(buttonTitle(amountToTransfer)) { startDeposit(balance.scopeInfo) }   // TODO: use exchange scope
                 .buttonStyle(TalerButtonStyle(type: .prominent, disabled: disabled || depositStarted))
                 .padding(.horizontal)
                 .disabled(disabled || depositStarted)
                 .accessibilityHint(disabled ? hint : EMPTYSTRING)
             } else {    // no balance - Yikes
                 Text("No balance. There seems to be a problem with the database...")
             }
         }
         .onAppear {
             DebugViewC.shared.setViewID(VIEW_DEPOSIT, stack: stack.push())
             symLog.log("❗️ onAppear")
         }
         .onDisappear {
             symLog.log("❗️ onDisappear")
         }
 
 //            .task(id: amountToTransfer.value) {
 //                if let amountAvailable {
 //                    do {
 //                        insufficient = try amountToTransfer > amountAvailable
 //                    } catch {
 //                        print("Yikes❗️ insufficient failed❗️")
 //                        insufficient = true
 //                    }
 //
 //                    if insufficient {
 //                        announce("\(amountVoiceOver), \(insufficientLabel2)")
 //                        feeStr = EMPTYSTRING
 //                    }
 //                }
 //                if !insufficient {
 //                    if amountToTransfer.isZero {
 //                        feeStr = EMPTYSTRING
 //                        checkDepositResult = nil
 //                    } else if let paytoUri {
 //                        if let ppCheck = try? await model.checkDepositM(paytoUri, amount: amountToTransfer) {
 //                            if let feeAmount = fee(ppCheck: ppCheck) {
 //                                feeStr = feeAmount.formatted(scopeInfo, isNegative: false)
 //                                let feeLabel = feeLabel(feeStr)
 //                                announce("\(amountVoiceOver), \(feeLabel)")
 //                            } else {
 //                                feeStr = EMPTYSTRING
 //                                announce(amountVoiceOver)
 //                            }
 //                            checkDepositResult = ppCheck
 //                        } else {
 //                            checkDepositResult = nil
 //                        }
 //                    }
 //                }
 //            }
         } // else
     } // body
 }
 // MARK: -
 #if DEBUG
 #endif