Improve per-instance push settings

Packages/PushNotifications/Sources/PushNotifications/PushSubscription.swift

@@ -53,8 +53,12 @@ public struct PushSubscription {
         self.policy = policy
     }
 
-    public enum Policy: String {
+    public enum Policy: String, CaseIterable, Identifiable {
         case all, followed, followers
+        
+        public var id: some Hashable {
+            self
+        }
     }
     
     public struct Alerts: OptionSet, Hashable {

Packages/TuskerComponents/Sources/TuskerComponents/AsyncPicker.swift

@@ -0,0 +1,83 @@
+//
+//  AsyncPicker.swift
+//  TuskerComponents
+//
+//  Created by Shadowfacts on 4/9/24.
+//
+
+import SwiftUI
+
+public struct AsyncPicker<V: Hashable, Content: View>: View {
+    let titleKey: LocalizedStringKey
+    @available(iOS, obsoleted: 16.0, message: "Switch to LabeledContent")
+    let labelHidden: Bool
+    let alignment: Alignment
+    @Binding var value: V
+    let onChange: (V) async -> Bool
+    let content: Content
+    @State private var isLoading = false
+    
+    public init(_ titleKey: LocalizedStringKey, labelHidden: Bool = false, alignment: Alignment = .center, value: Binding<V>, onChange: @escaping (V) async -> Bool, @ViewBuilder content: () -> Content) {
+        self.titleKey = titleKey
+        self.labelHidden = labelHidden
+        self.alignment = alignment
+        self._value = value
+        self.onChange = onChange
+        self.content = content()
+    }
+    
+    public var body: some View {
+        if #available(iOS 16.0, *) {
+            LabeledContent(titleKey) {
+                picker
+            }
+        } else if labelHidden {
+            picker
+        } else {
+            HStack {
+                Text(titleKey)
+                Spacer()
+                picker
+            }
+        }
+    }
+    
+    private var picker: some View {
+        ZStack(alignment: alignment) {
+            Picker(titleKey, selection: Binding(get: {
+                value
+            }, set: { newValue in
+                let oldValue = value
+                value = newValue
+                isLoading = true
+                Task {
+                    let operationCompleted = await onChange(newValue)
+                    if !operationCompleted {
+                        value = oldValue
+                    }
+                    isLoading = false
+                }
+            })) {
+                content
+            }
+            .labelsHidden()
+            .opacity(isLoading ? 0 : 1)
+
+            if isLoading {
+                ProgressView()
+            }
+        }
+    }
+}
+
+#Preview {
+    @State var value = 0
+    return AsyncPicker("", value: $value) { _ in
+        try! await Task.sleep(nanoseconds: NSEC_PER_SEC)
+        return true
+    } content: {
+        ForEach(0..<10) {
+            Text("\($0)").tag($0)
+        }
+    }
+}

Tusker/Screens/Preferences/Notifications/NotificationsPrefsView.swift

@@ -70,6 +70,7 @@ struct NotificationsPrefsView: View {
     private func startRegistration() async -> Bool {
         let authorized: Bool
         do {
+            // TODO: support .providesAppNotificationSettings
             authorized = try await UNUserNotificationCenter.current().requestAuthorization(options: [.alert])
         } catch {
             self.error = .requestingAuthorization(error)

Tusker/Screens/Preferences/Notifications/PushSubscriptionView.swift

@@ -21,6 +21,7 @@ struct PushSubscriptionView: View {
             PushSubscriptionSettingsView(account: account, subscription: subscription, updateSubscription: updateSubscription)
         } else {
             Text("No notifications")
+                .font(.callout)
                 .foregroundStyle(.secondary)
         }
     }
@@ -39,15 +40,17 @@ private struct PushSubscriptionSettingsView: View {
     }
     
     var body: some View {
-        VStack(alignment: .prefsAvatar) {
-            toggle("All", alert: [.mention, .favorite, .reblog, .follow, .followRequest, .poll, .update])
-            toggle("Mentions", alert: .mention)
-            toggle("Favorites", alert: .favorite)
-            toggle("Reblogs", alert: .reblog)
-            toggle("Follows", alert: [.follow, .followRequest])
-            toggle("Polls", alert: .poll)
-            toggle("Edits", alert: .update)
-            // status notifications not supported until we can enable/disable them in the app
+        VStack {
+            alertsToggles
+            
+            AsyncPicker("From", alignment: .trailing, value: .constant(subscription.policy)) { newPolicy in
+                await updateSubscription(subscription.alerts, newPolicy)
+            } content: {
+                ForEach(PushSubscription.Policy.allCases) {
+                    Text($0.displayName).tag($0)
+                }
+            }
+            .pickerStyle(.menu)
         }
         // this is the default value of the alignment guide, but this modifier is loading bearing
         .alignmentGuide(.prefsAvatar, computeValue: { dimension in
@@ -57,6 +60,21 @@ private struct PushSubscriptionSettingsView: View {
         .padding(.leading, 38)
     }
     
+    private var alertsToggles: some View {
+        GroupBox("Get notifications for") {
+            VStack {
+                toggle("All", alert: [.mention, .favorite, .reblog, .follow, .followRequest, .poll, .update])
+                toggle("Mentions", alert: .mention)
+                toggle("Favorites", alert: .favorite)
+                toggle("Reblogs", alert: .reblog)
+                toggle("Follows", alert: [.follow, .followRequest])
+                toggle("Polls finishing", alert: .poll)
+                toggle("Edits", alert: .update)
+                // status notifications not supported until we can enable/disable them in the app
+            }
+        }
+    }
+    
     private func toggle(_ titleKey: LocalizedStringKey, alert: PushSubscription.Alerts) -> some View {
         let binding: Binding<AsyncToggle.Mode> = Binding {
             isLoading[alert] == true ? .loading : subscription.alerts.contains(alert) ? .on : .off
@@ -64,11 +82,11 @@ private struct PushSubscriptionSettingsView: View {
             isLoading[alert] = newValue == .loading
         }
         return AsyncToggle(titleKey, mode: binding) {
-            return await updateSubscription(alert: alert, isOn: $0)
+            return await updateAlert(alert, isOn: $0)
         }
     }
     
-    private func updateSubscription(alert: PushSubscription.Alerts, isOn: Bool) async -> Bool {
+    private func updateAlert(_ alert: PushSubscription.Alerts, isOn: Bool) async -> Bool {
         var newAlerts = subscription.alerts
         if isOn {
             newAlerts.insert(alert)
@@ -79,6 +97,19 @@ private struct PushSubscriptionSettingsView: View {
     }
 }
 
+private extension PushSubscription.Policy {
+    var displayName: String {
+        switch self {
+        case .all:
+            "Anyone"
+        case .followed:
+            "Accounts you follow"
+        case .followers:
+            "Your followers"
+        }
+    }
+}
+
 //#Preview {
 //    PushSubscriptionView()
 //}