241755c8c4
This is a minor refactor on the way wallet invoice URLs are handled, in order to better fit the interface, enforce the design pattern, and avoid side-effects in a particular function that handles opening URLs. This design pattern was introduced to prevent issues on the previous pattern, where URL handling was done with side-effects inside multiple levels of nested logic and separate function calls, which would make debugging very difficult, and cause the app to fail silently. Closes: https://github.com/damus-io/damus/issues/3023 Signed-off-by: Daniel D’Aquino <daniel@daquino.me>
129 lines
4.4 KiB
Swift
129 lines
4.4 KiB
Swift
//
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// InvoiceView.swift
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// damus
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//
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// Created by William Casarin on 2022-10-18.
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//
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import SwiftUI
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struct InvoiceView: View {
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@Environment(\.colorScheme) var colorScheme
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let our_pubkey: Pubkey
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let invoice: Invoice
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@State var showing_select_wallet: Bool = false
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@State var copied = false
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let settings: UserSettingsStore
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var CopyButton: some View {
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Button {
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copied = true
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DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
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copied = false
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}
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UIImpactFeedbackGenerator(style: .medium).impactOccurred()
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UIPasteboard.general.string = invoice.string
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} label: {
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if !copied {
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Image("copy2")
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.foregroundColor(.gray)
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} else {
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Image("check-circle")
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.foregroundColor(DamusColors.green)
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}
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}
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}
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var PayButton: some View {
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Button {
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if settings.show_wallet_selector {
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present_sheet(.select_wallet(invoice: invoice.string))
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} else {
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do {
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try open_with_wallet(wallet: settings.default_wallet.model, invoice: invoice.string)
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}
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catch {
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present_sheet(.select_wallet(invoice: invoice.string))
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}
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}
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} label: {
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RoundedRectangle(cornerRadius: 20, style: .circular)
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.foregroundColor(colorScheme == .light ? .black : .white)
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.overlay {
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Text("Pay", comment: "Button to pay a Lightning invoice.")
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.fontWeight(.medium)
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.foregroundColor(colorScheme == .light ? .white : .black)
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}
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}
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.onTapGesture {
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// Temporary solution so that the "pay" button can be clicked (Yes we need an empty tap gesture)
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print("pay button tap")
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}
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}
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var body: some View {
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ZStack {
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RoundedRectangle(cornerRadius: 10)
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.foregroundColor(.secondary.opacity(0.1))
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VStack(alignment: .leading, spacing: 12) {
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HStack {
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Label("", image: "zap.fill")
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.foregroundColor(.orange)
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Text("Lightning Invoice", comment: "Indicates that the view is for paying a Lightning invoice.")
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Spacer()
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CopyButton
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}
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Divider()
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Text(invoice.description_string)
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Text(invoice.amount.amount_sats_str())
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.font(.title)
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PayButton
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.frame(height: 50)
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.zIndex(10.0)
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}
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.padding(30)
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}
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}
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}
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enum OpenWalletError: Error {
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case no_wallet_to_open
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case store_link_invalid
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case system_cannot_open_store_link
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}
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func open_with_wallet(wallet: Wallet.Model, invoice: String) throws {
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let url = try getUrlToOpen(invoice: invoice, with: wallet)
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this_app.open(url)
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}
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func getUrlToOpen(invoice: String, with wallet: Wallet.Model) throws(OpenWalletError) -> URL {
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if let url = URL(string: "\(wallet.link)\(invoice)"), this_app.canOpenURL(url) {
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return url
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} else {
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guard let store_link = wallet.appStoreLink else {
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throw .no_wallet_to_open
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}
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guard let url = URL(string: store_link) else {
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throw .store_link_invalid
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}
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guard this_app.canOpenURL(url) else {
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throw .system_cannot_open_store_link
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}
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return url
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}
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}
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let test_invoice = Invoice(description: .description("this is a description"), amount: .specific(10000), string: "lnbc100n1p357sl0sp5t9n56wdztun39lgdqlr30xqwksg3k69q4q2rkr52aplujw0esn0qpp5mrqgljk62z20q4nvgr6lzcyn6fhylzccwdvu4k77apg3zmrkujjqdpzw35xjueqd9ejqcfqv3jhxcmjd9c8g6t0dcxqyjw5qcqpjrzjqt56h4gvp5yx36u2uzqa6qwcsk3e2duunfxppzj9vhypc3wfe2wswz607uqq3xqqqsqqqqqqqqqqqlqqyg9qyysgqagx5h20aeulj3gdwx3kxs8u9f4mcakdkwuakasamm9562ffyr9en8yg20lg0ygnr9zpwp68524kmda0t5xp2wytex35pu8hapyjajxqpsql29r", expiry: 604800, payment_hash: Data(), created_at: 1666139119)
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struct InvoiceView_Previews: PreviewProvider {
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static var previews: some View {
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InvoiceView(our_pubkey: .empty, invoice: test_invoice, settings: test_damus_state.settings)
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.frame(width: 300, height: 200)
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}
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}
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