Add tip jar subscription

Tusker/Screens/Preferences/Tip Jar/TipJarView.swift

@@ -11,18 +11,24 @@ import StoreKit
 import Combine
 
 struct TipJarView: View {
-    private static let productIDs = [
+    private static let tipProductIDs = [
         "tusker.tip.small",
         "tusker.tip.medium",
         "tusker.tip.large",
     ]
+    private static let supporterProductIDs = [
+        "tusker.supporter.regular",
+    ]
     
     @State private var isLoaded = false
-    @State private var products: [(Product, Bool)] = []
+    @State private var tipProducts: [(Product, Bool)] = []
+    @State private var supporterProducts: [(Product, Bool)] = []
     @State private var error: Error?
     @State private var showConfetti = false
     @State private var updatesObserver: Task<Void, Never>?
-    @State private var buttonWidth: CGFloat?
+    @State private var tipButtonWidth: CGFloat?
+    @State private var supporterButtonWidth: CGFloat?
+    @State private var supporterStartDate: Date?
     @StateObject private var observer = UbiquitousKeyValueStoreObserver()
     
     var body: some View {
@@ -47,9 +53,20 @@ struct TipJarView: View {
             updatesObserver = Task.detached { @MainActor in
                 await observeTransactionUpdates()
             }
+            for await verificationResult in Transaction.currentEntitlements {
+                if case .verified(let transaction) = verificationResult,
+                   Self.supporterProductIDs.contains(transaction.productID),
+                   await transaction.subscriptionStatus?.state == .subscribed {
+                    supporterStartDate = transaction.originalPurchaseDate
+                    break
+                }
+            }
             do {
-                products = try await Product.products(for: Self.productIDs).map { ($0, false) }
+                let allProducts = try await Product.products(for: Self.tipProductIDs + Self.supporterProductIDs).map { ($0, false) }
-                products.sort(by: { $0.0.price < $1.0.price })
+                tipProducts = allProducts.filter { Self.tipProductIDs.contains($0.0.id) }
+                tipProducts.sort(by: { $0.0.price < $1.0.price })
+                supporterProducts = allProducts.filter { Self.supporterProductIDs.contains($0.0.id) }
+                supporterProducts.sort(by: { $0.0.price < $1.0.price })
                 isLoaded = true
             } catch {
                 self.error = .fetchingProducts(error)
@@ -67,25 +84,15 @@ struct TipJarView: View {
     private var productsView: some View {
         if isLoaded {
             VStack {
-                Text("If you're enjoying using Tusker and want to show your gratitude or help support its development, it is greatly appreciated!")
+                supporterSubscriptions
+                
+                tipPurchases
+                
+                if let tipStatus {
+                    tipStatus
                         .multilineTextAlignment(.center)
                         .padding(.horizontal)
-                
+                        .padding(.top, 16)
-                VStack(alignment: .myAlignment) {
-                    ForEach($products, id: \.0.id) { $productAndPurchasing in
-                        TipRow(product: productAndPurchasing.0, buttonWidth: buttonWidth, isPurchasing: $productAndPurchasing.1, showConfetti: $showConfetti)
-                    }
-                }
-                .onPreferenceChange(ButtonWidthKey.self) { newValue in
-                    if let buttonWidth {
-                        self.buttonWidth = max(buttonWidth, newValue)
-                    } else {
-                        self.buttonWidth = newValue
-                    }
-                }
-                
-                if let total = getTotalTips(), total > 0 {
-                    Text("You've tipped a total of \(Text(total, format: products[0].0.priceFormatStyle)) 😍")
                     Text("Thank you!")
                 }
             }
@@ -95,20 +102,93 @@ struct TipJarView: View {
         }
     }
     
+    @ViewBuilder
+    private var supporterSubscriptions: some View {
+        Text("If you want to contribute Tusker's continued development, you can become a supporter. Supporting Tusker is an auto-renewable monthly subscription.")
+            .multilineTextAlignment(.center)
+            .padding(.horizontal)
+        
+        VStack(alignment: .myAlignment) {
+            ForEach($supporterProducts, id: \.0.id) { $productAndPurchasing in
+                TipRow(product: productAndPurchasing.0, buttonWidth: supporterButtonWidth, isPurchasing: $productAndPurchasing.1, showConfetti: $showConfetti)
+            }
+        }
+        .onPreferenceChange(ButtonWidthKey.self) { newValue in
+            if let supporterButtonWidth {
+                self.supporterButtonWidth = max(supporterButtonWidth, newValue)
+            } else {
+                self.supporterButtonWidth = newValue
+            }
+        }
+    }
+    
+    @ViewBuilder
+    private var tipPurchases: some View {
+        Text("Or, you can choose to make a one-time tip to show your gratitutde or help support the app's development. It is greatly appreciated!")
+            .multilineTextAlignment(.center)
+            .padding(.horizontal)
+            .padding(.top, 16)
+
+        VStack(alignment: .myAlignment) {
+            ForEach($tipProducts, id: \.0.id) { $productAndPurchasing in
+                TipRow(product: productAndPurchasing.0, buttonWidth: tipButtonWidth, isPurchasing: $productAndPurchasing.1, showConfetti: $showConfetti)
+            }
+        }
+        .onPreferenceChange(ButtonWidthKey.self) { newValue in
+            if let tipButtonWidth {
+                self.tipButtonWidth = max(tipButtonWidth, newValue)
+            } else {
+                self.tipButtonWidth = newValue
+            }
+        }
+    }
+    
+    private var tipStatus: Text? {
+        var text: Text?
+        if let supporterStartDate {
+            var months = Calendar.current.dateComponents([.month], from: supporterStartDate, to: Date()).month!
+            // the user has already paid for n months before the nth month has finished, so reflect that
+            months += 1
+            text = Text("You've been a supporter for ^[\(months) months](inflect: true)")
+        }
+        if let total = getTotalTips(),
+           total > 0 {
+            if let t = text {
+                text = Text("\(t) and tipped \(total.formatted(tipProducts[0].0.priceFormatStyle))")
+            } else {
+                text = Text("You've tipped \(total.formatted(tipProducts[0].0.priceFormatStyle))")
+            }
+        }
+        if let text {
+            return Text("\(text) 😍")
+        } else {
+            return nil
+        }
+    }
+    
     @MainActor
     private func observeTransactionUpdates() async {
         for await verificationResult in StoreKit.Transaction.updates {
-            guard let index = products.firstIndex(where: { $0.0.id == verificationResult.unsafePayloadValue.productID }) else {
+            if let index = tipProducts.firstIndex(where: { $0.0.id == verificationResult.unsafePayloadValue.productID }) {
-                continue
-            }
                 switch verificationResult {
                 case .verified(let transaction):
                     await transaction.finish()
-                self.products[index].1 = false
+                    self.tipProducts[index].1 = false
                     self.showConfetti = true
                 case .unverified(_, let error):
                     self.error = .verifyingTransaction(error)
                 }
+            } else if let index = supporterProducts.firstIndex(where: { $0.0.id == verificationResult.unsafePayloadValue.productID }) {
+                switch verificationResult {
+                case .verified(let transaction):
+                    await transaction.finish()
+                    self.supporterProducts[index].1 = false
+                    self.showConfetti = true
+                    self.supporterStartDate = transaction.originalPurchaseDate
+                case .unverified(_, let error):
+                    self.error = .verifyingTransaction(error)
+                }
+            }
         }
     }
     
@@ -149,6 +229,20 @@ private struct TipRow: View {
             Text(product.displayName)
                 .alignmentGuide(.myAlignment, computeValue: { context in context[.trailing] })
             
+            if let subscription = product.subscription {
+                SubscriptionButton(product: product, subscriptionInfo: subscription, isPurchasing: $isPurchasing, buttonWidth: buttonWidth, purchase: purchase)
+            } else {
+                tipButton
+            }
+        }
+        .alertWithData("Error", data: $error) { _ in
+            Button("OK") {}
+        } message: { error in
+            Text(error.localizedDescription)
+        }
+    }
+    
+    private var tipButton: some View {
         Button {
             Task {
                 await self.purchase()
@@ -169,12 +263,6 @@ private struct TipRow: View {
         }
         .buttonStyle(.borderedProminent)
     }
-        .alertWithData("Error", data: $error) { _ in
-            Button("OK") {}
-        } message: { error in
-            Text(error.localizedDescription)
-        }
-    }
     
     @MainActor
     private func purchase() async {
@@ -221,6 +309,71 @@ private struct TipRow: View {
     }
 }
 
+private struct SubscriptionButton: View {
+    let product: Product
+    let subscriptionInfo: Product.SubscriptionInfo
+    @Binding var isPurchasing: Bool
+    let buttonWidth: CGFloat?
+    let purchase: () async -> Void
+    @State private var hasPurchased = false
+    @State private var showManageSheet = false
+    
+    var body: some View {
+        Button {
+            if #available(iOS 17.0, *), hasPurchased {
+                showManageSheet = true
+            } else {
+                Task {
+                    await purchase()
+                    await updateHasPurchased()
+                }
+            }
+        } label: {
+            if #available(iOS 17.0, *), hasPurchased {
+                Text("Manage")
+            } else if isPurchasing {
+                ProgressView()
+                    .progressViewStyle(.circular)
+                    .frame(width: buttonWidth, alignment: .center)
+            } else {
+                let per: String = if subscriptionInfo.subscriptionPeriod.value == 1, subscriptionInfo.subscriptionPeriod.unit == .month {
+                    "mo"
+                } else {
+                    subscriptionInfo.subscriptionPeriod.formatted(product.subscriptionPeriodFormatStyle)
+                }
+                Text("\(product.displayPrice)/\(per)")
+                    .background(GeometryReader { proxy in
+                        Color.clear
+                            .preference(key: ButtonWidthKey.self, value: proxy.size.width)
+                    })
+                    .frame(width: buttonWidth)
+            }
+        }
+        .buttonStyle(.borderedProminent)
+        .task {
+            await updateHasPurchased()
+        }
+        .onChange(of: showManageSheet) {
+            if !$0 {
+                Task {
+                    await updateHasPurchased()
+                }
+            }
+        }
+        .manageSubscriptionsSheetIfAvailable(isPresented: $showManageSheet, subscriptionGroupID: subscriptionInfo.subscriptionGroupID)
+    }
+    
+    private func updateHasPurchased() async {
+        switch await Transaction.currentEntitlement(for: product.id) {
+        case .verified(let transaction):
+            let state = await transaction.subscriptionStatus?.state
+            hasPurchased = state == .subscribed
+        default:
+            break
+        }
+    }
+}
+
 extension HorizontalAlignment {
     private enum MyTrailing: AlignmentID {
         static func defaultValue(in context: ViewDimensions) -> CGFloat {
@@ -263,3 +416,15 @@ private class UbiquitousKeyValueStoreObserver: ObservableObject {
             }
     }
 }
+
+private extension View {
+    @available(iOS, obsoleted: 17.0)
+    @ViewBuilder
+    func manageSubscriptionsSheetIfAvailable(isPresented: Binding<Bool>, subscriptionGroupID: String) -> some View {
+        if #available(iOS 17.0, *) {
+            self.manageSubscriptionsSheet(isPresented: isPresented, subscriptionGroupID: subscriptionGroupID)
+        } else {
+            self
+        }
+    }
+}

Tusker/Tusker.storekit

@@ -53,13 +53,94 @@
   "settings" : {
     "_applicationInternalID" : "1498334597",
     "_developerTeamID" : "V4WK9KR9U2",
-    "_lastSynchronizedDate" : 696310076.23998904
+    "_failTransactionsEnabled" : false,
+    "_lastSynchronizedDate" : 737914663.21114194,
+    "_storeKitErrors" : [
+      {
+        "current" : null,
+        "enabled" : false,
+        "name" : "Load Products"
+      },
+      {
+        "current" : null,
+        "enabled" : false,
+        "name" : "Purchase"
+      },
+      {
+        "current" : null,
+        "enabled" : false,
+        "name" : "Verification"
+      },
+      {
+        "current" : null,
+        "enabled" : false,
+        "name" : "App Store Sync"
+      },
+      {
+        "current" : null,
+        "enabled" : false,
+        "name" : "Subscription Status"
+      },
+      {
+        "current" : null,
+        "enabled" : false,
+        "name" : "App Transaction"
+      },
+      {
+        "current" : null,
+        "enabled" : false,
+        "name" : "Manage Subscriptions Sheet"
+      },
+      {
+        "current" : null,
+        "enabled" : false,
+        "name" : "Refund Request Sheet"
+      },
+      {
+        "current" : null,
+        "enabled" : false,
+        "name" : "Offer Code Redeem Sheet"
+      }
+    ]
   },
   "subscriptionGroups" : [
+    {
+      "id" : "21490109",
+      "localizations" : [
 
+      ],
+      "name" : "Tip Jar",
+      "subscriptions" : [
+        {
+          "adHocOffers" : [
+
+          ],
+          "codeOffers" : [
+
+          ],
+          "displayPrice" : "1.99",
+          "familyShareable" : false,
+          "groupNumber" : 1,
+          "internalID" : "6502909920",
+          "introductoryOffer" : null,
+          "localizations" : [
+            {
+              "description" : "Support the continued development of Tusker!",
+              "displayName" : "Tusker Supporter",
+              "locale" : "en_US"
+            }
+          ],
+          "productID" : "tusker.supporter.regular",
+          "recurringSubscriptionPeriod" : "P1M",
+          "referenceName" : "tusker.supporter.regular",
+          "subscriptionGroupID" : "21490109",
+          "type" : "RecurringSubscription"
+        }
+      ]
+    }
   ],
   "version" : {
-    "major" : 2,
+    "major" : 3,
     "minor" : 0
   }
 }