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+//
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+// Copyright © 2024 osy. All rights reserved.
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+//
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+// Licensed under the Apache License, Version 2.0 (the "License");
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+// you may not use this file except in compliance with the License.
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+// You may obtain a copy of the License at
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+//
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+// http://www.apache.org/licenses/LICENSE-2.0
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+//
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+// Unless required by applicable law or agreed to in writing, software
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+// distributed under the License is distributed on an "AS IS" BASIS,
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+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+// See the License for the specific language governing permissions and
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+// limitations under the License.
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+//
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+
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+import SwiftUI
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+import StoreKit
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+
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+struct UTMDonateView: View {
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+ @Environment(\.presentationMode) var presentationMode
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+
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+ private var appIcon: String? {
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+ guard let icons = Bundle.main.object(forInfoDictionaryKey: "CFBundleIcons") as? [String: Any],
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+ let primaryIcon = icons["CFBundlePrimaryIcon"] as? [String: Any],
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+ let iconFiles = primaryIcon["CFBundleIconFiles"] as? [String],
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+ let iconFileName = iconFiles.last else {
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+ return nil
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+ }
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+ return iconFileName
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+ }
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+
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+ var body: some View {
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+ NavigationView {
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+ VStack {
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+ if let appIcon = appIcon, let image = UIImage(named: appIcon) {
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+ Image(uiImage: image)
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+ .resizable()
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+ .aspectRatio(contentMode: .fit)
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+ .clipShape(RoundedRectangle(cornerRadius: 12.632, style: .continuous))
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+ .frame(width: 72, height: 72)
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+ }
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+ Text("Your support is the driving force that helps UTM stay independent. Your contribution, no matter the size, makes a significant difference. It enables us to develop new features and maintain existing ones. Thank you for considering a donation to support us.")
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+ .padding()
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+ if #available(iOS 15, *) {
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+ StoreView()
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+ } else {
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+ List {
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+ Link("GitHub Sponsors", destination: URL(string: "https://github.com/sponsors/utmapp")!)
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+ }
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+ }
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+ }.navigationTitle("Support UTM")
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+ .navigationBarTitleDisplayMode(.inline)
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+ .toolbar {
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+ ToolbarItem(placement: .topBarTrailing) {
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+ Button("Close") {
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+ presentationMode.wrappedValue.dismiss()
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+ }
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+ }
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+ }
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+ }.navigationViewStyle(.stack)
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+ }
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+}
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+
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+@available(iOS 15, *)
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+private struct StoreView: View {
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+ @StateObject private var store = UTMDonateStore()
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+
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+ var body: some View {
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+ if !store.isLoaded {
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+ ProgressView()
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+ Spacer()
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+ } else {
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+ List {
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+ if !store.consumables.isEmpty {
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+ Section("One Time Donation") {
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+ ForEach(store.consumables) { item in
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+ ListCellView(store: store, product: item)
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+ }
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+ }
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+ .listStyle(.grouped)
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+ }
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+ if !store.subscriptions.isEmpty {
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+ Section("Recurring Donation") {
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+ ForEach(store.subscriptions) { item in
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+ ListCellView(store: store, product: item)
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+ }
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+ Link("Manage Subscriptions…", destination: URL(string: "itms-apps://apps.apple.com/account/subscriptions")!)
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+ }
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+ .listStyle(.grouped)
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+ }
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+ if store.consumables.isEmpty && store.subscriptions.isEmpty {
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+ Link("GitHub Sponsors", destination: URL(string: "https://github.com/sponsors/utmapp")!)
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+ } else {
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+ Button("Restore Purchases") {
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+ Task {
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+ try? await AppStore.sync()
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+ }
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+ }
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+ }
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+ }
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+ }
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+ }
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+}
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+
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+@available(iOS 15, *)
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+private struct ListCellView: View {
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+ @ObservedObject var store: UTMDonateStore
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+ @State var isPurchased: Bool = false
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+ @State var errorTitle = ""
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+ @State var isShowingError: Bool = false
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+ @State var isLoaded: Bool = false
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+
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+ #if os(visionOS)
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+ @Environment(\.purchase) var purchase
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+ #endif
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+
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+ let product: Product
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+ let purchasingEnabled: Bool
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+
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+ var systemImage: String? {
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+ store.productImages[product.id]
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+ }
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+
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+ init(store: UTMDonateStore, product: Product, purchasingEnabled: Bool = true) {
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+ self.store = store
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+ self.product = product
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+ self.purchasingEnabled = purchasingEnabled
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+ }
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+
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+ var body: some View {
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+ HStack {
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+ Image(systemName: systemImage ?? "heart.fill")
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+ .font(.system(size: 36))
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+ .frame(width: 48, height: 48)
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+ .padding(.trailing, 20)
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+ if purchasingEnabled {
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+ productDetail
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+ Spacer()
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+ buyButton
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+ .buttonStyle(BuyButtonStyle(isPurchased: isPurchased))
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+ .disabled(isPurchased)
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+ } else {
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+ productDetail
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+ }
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+ }
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+ .alert(isPresented: $isShowingError, content: {
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+ Alert(title: Text(errorTitle), message: nil, dismissButton: .default(Text("OK")))
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+ })
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+ }
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+
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+ @ViewBuilder
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+ var productDetail: some View {
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+ VStack(alignment: .leading) {
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+ Text(product.displayName)
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+ .bold()
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+ Text(product.description)
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+ }
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+ }
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+
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+ func subscribeButton(_ subscription: Product.SubscriptionInfo) -> some View {
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+ let unit: String
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+ let plural = 1 < subscription.subscriptionPeriod.value
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+ switch subscription.subscriptionPeriod.unit {
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+ case .day:
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+ unit = plural ? String.localizedStringWithFormat(NSLocalizedString("%d days", comment: "UTMDonateView"), subscription.subscriptionPeriod.value) : NSLocalizedString("day", comment: "UTMDonateView")
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+ case .week:
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+ unit = plural ? String.localizedStringWithFormat(NSLocalizedString("%d weeks", comment: "UTMDonateView"), subscription.subscriptionPeriod.value) : NSLocalizedString("week", comment: "UTMDonateView")
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+ case .month:
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+ unit = plural ? String.localizedStringWithFormat(NSLocalizedString("%d months", comment: "UTMDonateView"), subscription.subscriptionPeriod.value) : NSLocalizedString("month", comment: "UTMDonateView")
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+ case .year:
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+ unit = plural ? String.localizedStringWithFormat(NSLocalizedString("%d years", comment: "UTMDonateView"), subscription.subscriptionPeriod.value) : NSLocalizedString("year", comment: "UTMDonateView")
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+ @unknown default:
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+ unit = NSLocalizedString("period", comment: "UTMDonateView")
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+ }
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+
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+ return VStack {
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+ Text(product.displayPrice)
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+ .foregroundColor(.white)
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+ .bold()
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+ .padding(EdgeInsets(top: -4.0, leading: 0.0, bottom: -8.0, trailing: 0.0))
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+ Divider()
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+ .background(Color.white)
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+ Text(unit)
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+ .foregroundColor(.white)
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+ .font(.system(size: 12))
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+ .padding(EdgeInsets(top: -8.0, leading: 0.0, bottom: -4.0, trailing: 0.0))
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+ }
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+ }
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+
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+ var buyButton: some View {
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+ Button(action: {
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+ Task {
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+ await buy()
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+ }
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+ }) {
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+ if !isLoaded {
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+ ProgressView()
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+ .tint(.white)
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+ } else if isPurchased {
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+ Text(Image(systemName: "checkmark"))
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+ .bold()
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+ .foregroundColor(.white)
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+ } else {
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+ if let subscription = product.subscription {
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+ subscribeButton(subscription)
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+ } else {
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+ Text(product.displayPrice)
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+ .foregroundColor(.white)
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+ .bold()
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+ }
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+ }
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+ }
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+ .onAppear {
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+ Task {
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+ isPurchased = (try? await store.isPurchased(product)) ?? false
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+ isLoaded = true
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+ }
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+ }
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+ .onChange(of: store.purchasedSubscriptions) { _ in
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+ Task {
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+ isPurchased = (try? await store.isPurchased(product)) ?? false
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+ }
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+ }
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+ }
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+
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+ func buy() async {
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+ do {
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+ if try await store.purchase(with: {
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+ #if os(visionOS)
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+ try await purchase(product)
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+ #else
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+ try await product.purchase()
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+ #endif
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+ }) != nil {
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+ withAnimation {
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+ isPurchased = true
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+ }
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+ }
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+ } catch UTMDonateStore.StoreError.failedVerification {
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+ errorTitle = NSLocalizedString("Your purchase could not be verified by the App Store.", comment: "UTMDonateView")
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+ isShowingError = true
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+ } catch {
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+ logger.error("Failed purchase for \(product.id): \(error)")
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+ }
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+ }
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+}
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+
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+private struct BuyButtonStyle: ButtonStyle {
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+ let isPurchased: Bool
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+
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+ init(isPurchased: Bool = false) {
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+ self.isPurchased = isPurchased
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+ }
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+
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+ func makeBody(configuration: Self.Configuration) -> some View {
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+ var bgColor: Color = isPurchased ? Color.green : Color.blue
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+ bgColor = configuration.isPressed ? bgColor.opacity(0.7) : bgColor.opacity(1)
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+
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+ return configuration.label
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+ .frame(width: 50)
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+ .padding(10)
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+ .background(bgColor)
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+ .clipShape(RoundedRectangle(cornerRadius: 20, style: .continuous))
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+ .scaleEffect(configuration.isPressed ? 0.9 : 1.0)
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+ }
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+}
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+
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+#Preview {
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+ UTMDonateView()
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+}
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osy