damus

nostr ios client
git clone git://jb55.com/damus
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InvoiceView.swift (4523B)

      1 //
      2 //  InvoiceView.swift
      3 //  damus
      4 //
      5 //  Created by William Casarin on 2022-10-18.
      6 //
      7 
      8 import SwiftUI
      9 
     10 struct InvoiceView: View {
     11     @Environment(\.colorScheme) var colorScheme
     12     let our_pubkey: Pubkey
     13     let invoice: Invoice
     14     @State var showing_select_wallet: Bool = false
     15     @State var copied = false
     16     let settings: UserSettingsStore
     17     
     18     var CopyButton: some View {
     19         Button {
     20             copied = true
     21             DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
     22                 copied = false
     23             }
     24             UIImpactFeedbackGenerator(style: .medium).impactOccurred()
     25             UIPasteboard.general.string = invoice.string
     26         } label: {
     27             if !copied {
     28                 Image("copy2")
     29                     .foregroundColor(.gray)
     30             } else {
     31                 Image("check-circle")
     32                     .foregroundColor(DamusColors.green)
     33             }
     34         }
     35     }
     36     
     37     var PayButton: some View {
     38         Button {
     39             if settings.show_wallet_selector {
     40                 present_sheet(.select_wallet(invoice: invoice.string))
     41             } else {
     42                 do {
     43                     try open_with_wallet(wallet: settings.default_wallet.model, invoice: invoice.string)
     44                 }
     45                 catch {
     46                     present_sheet(.select_wallet(invoice: invoice.string))
     47                 }
     48             }
     49         } label: {
     50             RoundedRectangle(cornerRadius: 20, style: .circular)
     51                 .foregroundColor(colorScheme == .light ? .black : .white)
     52                 .overlay {
     53                     Text("Pay", comment: "Button to pay a Lightning invoice.")
     54                         .fontWeight(.medium)
     55                         .foregroundColor(colorScheme == .light ? .white : .black)
     56                 }
     57         }
     58         .onTapGesture {
     59             // Temporary solution so that the "pay" button can be clicked (Yes we need an empty tap gesture)
     60             print("pay button tap")
     61         }
     62     }
     63     
     64     var body: some View {
     65         ZStack {
     66             RoundedRectangle(cornerRadius: 10)
     67                 .foregroundColor(.secondary.opacity(0.1))
     68             
     69             VStack(alignment: .leading, spacing: 12) {
     70                 HStack {
     71                     Label("", image: "zap.fill")
     72                         .foregroundColor(.orange)
     73                     Text("Lightning Invoice", comment: "Indicates that the view is for paying a Lightning invoice.")
     74                     Spacer()
     75                     CopyButton
     76                 }
     77                 Divider()
     78                 Text(invoice.description_string)
     79                 Text(invoice.amount.amount_sats_str())
     80                     .font(.title)
     81                 PayButton
     82                     .frame(height: 50)
     83                     .zIndex(10.0)
     84             }
     85             .padding(30)
     86         }
     87     }
     88 }
     89 
     90 enum OpenWalletError: Error {
     91     case no_wallet_to_open
     92     case store_link_invalid
     93     case system_cannot_open_store_link
     94 }
     95 
     96 func open_with_wallet(wallet: Wallet.Model, invoice: String) throws {
     97     if let url = URL(string: "\(wallet.link)\(invoice)"), UIApplication.shared.canOpenURL(url) {
     98         UIApplication.shared.open(url)
     99     } else {
    100         guard let store_link = wallet.appStoreLink else {
    101             throw OpenWalletError.no_wallet_to_open
    102         }
    103         
    104         guard let url = URL(string: store_link) else {
    105             throw OpenWalletError.store_link_invalid
    106         }
    107         
    108         guard UIApplication.shared.canOpenURL(url) else {
    109             throw OpenWalletError.system_cannot_open_store_link
    110         }
    111         
    112         UIApplication.shared.open(url)
    113     }
    114 }
    115 
    116 
    117 let test_invoice = Invoice(description: .description("this is a description"), amount: .specific(10000), string: "lnbc100n1p357sl0sp5t9n56wdztun39lgdqlr30xqwksg3k69q4q2rkr52aplujw0esn0qpp5mrqgljk62z20q4nvgr6lzcyn6fhylzccwdvu4k77apg3zmrkujjqdpzw35xjueqd9ejqcfqv3jhxcmjd9c8g6t0dcxqyjw5qcqpjrzjqt56h4gvp5yx36u2uzqa6qwcsk3e2duunfxppzj9vhypc3wfe2wswz607uqq3xqqqsqqqqqqqqqqqlqqyg9qyysgqagx5h20aeulj3gdwx3kxs8u9f4mcakdkwuakasamm9562ffyr9en8yg20lg0ygnr9zpwp68524kmda0t5xp2wytex35pu8hapyjajxqpsql29r", expiry: 604800, payment_hash: Data(), created_at: 1666139119)
    118 
    119 struct InvoiceView_Previews: PreviewProvider {
    120     static var previews: some View {
    121         InvoiceView(our_pubkey: .empty, invoice: test_invoice, settings: test_damus_state.settings)
    122             .frame(width: 300, height: 200)
    123     }
    124 }
    125 
    126 
    127 func present_sheet(_ sheet: Sheets) {
    128     notify(.present_sheet(sheet))
    129 }