151 lines
4.9 KiB
Swift
151 lines
4.9 KiB
Swift
// This is free software: you can redistribute and/or modify it
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// under the terms of the GNU General Public License 3.0
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// as published by the Free Software Foundation https://fsf.org
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import Combine
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import SwiftUI
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public struct ContentView: View {
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@ObservedObject private var satsViewModel = SatsViewModel()
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@State private var priceSource: PriceSource
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private let dateFormatter: DateFormatter
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private let priceFetcherDelegator: PriceFetcherDelegator
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init(_ priceSource: PriceSource) {
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dateFormatter = DateFormatter()
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dateFormatter.dateStyle = .short
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dateFormatter.timeStyle = .short
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self.priceSource = priceSource
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priceFetcherDelegator = PriceFetcherDelegator(priceSource)
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}
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@MainActor
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func updatePrice() async {
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do {
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guard let price = try await priceFetcherDelegator.convertBTC(toCurrency: satsViewModel.selectedCurrency) else {
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satsViewModel.btcToCurrencyString = ""
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return
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}
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satsViewModel.btcToCurrencyString = "\(price)"
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} catch {
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satsViewModel.btcToCurrencyString = ""
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}
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satsViewModel.lastUpdated = Date.now
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}
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public var body: some View {
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NavigationStack {
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Form {
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Section {
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Picker("Price Source", selection: $priceSource) {
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ForEach(PriceSource.allCases, id: \.self) {
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Text($0.description)
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}
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}
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Picker("Currency", selection: $satsViewModel.selectedCurrency) {
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ForEach(satsViewModel.currencies, id: \.self) {
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if let localizedCurrency = Locale.current.localizedString(forCurrencyCode: $0.identifier) {
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Text("\($0.identifier) - \(localizedCurrency)")
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} else {
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Text($0.identifier)
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}
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}
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}
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.pickerStyle(.navigationLink)
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HStack {
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TextField("", text: $satsViewModel.btcToCurrencyString)
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.disabled(priceSource != .manual)
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#if os(iOS) || SKIP
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.keyboardType(.decimalPad)
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#endif
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if priceSource != .manual {
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Button(action: {
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Task {
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await updatePrice()
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}
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}) {
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Image(systemName: "arrow.clockwise.circle")
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}
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}
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}
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} header: {
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Text("1 BTC to \(satsViewModel.selectedCurrency.identifier)")
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} footer: {
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if priceSource != .manual, let lastUpdated = satsViewModel.lastUpdated {
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Text("Last updated: \(dateFormatter.string(from: lastUpdated))")
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}
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}
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Section {
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TextField("", text: $satsViewModel.satsString)
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#if os(iOS) || SKIP
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.keyboardType(.numberPad)
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#endif
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} header: {
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Text("Sats")
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} footer: {
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if satsViewModel.exceedsMaximum {
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Text("2100000000000000 sats is the maximum.")
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}
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}
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Section {
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TextField("", text: $satsViewModel.btcString)
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#if os(iOS) || SKIP
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.keyboardType(.decimalPad)
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#endif
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} header: {
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Text("BTC")
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} footer: {
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if satsViewModel.exceedsMaximum {
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Text("21000000 BTC is the maximum.")
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}
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}
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Section {
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TextField("", text: $satsViewModel.currencyValueString)
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#if os(iOS) || SKIP
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.keyboardType(.decimalPad)
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#endif
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} header: {
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Text(satsViewModel.selectedCurrency.identifier)
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}
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}
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.task {
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await updatePrice()
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}
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.onChange(of: satsViewModel.selectedCurrency) { newCurrency in
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satsViewModel.lastUpdated = nil
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Task {
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await updatePrice()
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}
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}
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.onChange(of: priceSource) { newPriceSource in
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satsViewModel.lastUpdated = nil
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priceFetcherDelegator.priceSource = newPriceSource
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Task {
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await updatePrice()
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}
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}
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#if os(macOS)
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.formStyle(.grouped)
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#endif
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}
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}
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}
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#Preview {
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#if DEBUG
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ContentView(.fake)
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#else
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ContentView(.coinbase)
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#endif
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}
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