Push proxy registration

Tusker.xcodeproj/project.pbxproj

@@ -121,6 +121,8 @@
 		D64AAE9126C80DC600FC57FB /* ToastView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64AAE9026C80DC600FC57FB /* ToastView.swift */; };
 		D64AAE9526C88C5000FC57FB /* ToastableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64AAE9426C88C5000FC57FB /* ToastableViewController.swift */; };
 		D64AAE9726C88DC400FC57FB /* ToastConfiguration.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64AAE9626C88DC400FC57FB /* ToastConfiguration.swift */; };
+		D64B967C2BC19C28002C8990 /* NotificationsPrefsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64B967B2BC19C28002C8990 /* NotificationsPrefsView.swift */; };
+		D64B967F2BC1D447002C8990 /* PushManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64B967E2BC1D447002C8990 /* PushManager.swift */; };
 		D64D0AB12128D9AE005A6F37 /* OnboardingViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64D0AB02128D9AE005A6F37 /* OnboardingViewController.swift */; };
 		D64D8CA92463B494006B0BAA /* MultiThreadDictionary.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64D8CA82463B494006B0BAA /* MultiThreadDictionary.swift */; };
 		D651C5B42915B00400236EF6 /* ProfileFieldsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D651C5B32915B00400236EF6 /* ProfileFieldsView.swift */; };
@@ -521,6 +523,8 @@
 		D64AAE9026C80DC600FC57FB /* ToastView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ToastView.swift; sourceTree = "<group>"; };
 		D64AAE9426C88C5000FC57FB /* ToastableViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ToastableViewController.swift; sourceTree = "<group>"; };
 		D64AAE9626C88DC400FC57FB /* ToastConfiguration.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ToastConfiguration.swift; sourceTree = "<group>"; };
+		D64B967B2BC19C28002C8990 /* NotificationsPrefsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationsPrefsView.swift; sourceTree = "<group>"; };
+		D64B967E2BC1D447002C8990 /* PushManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PushManager.swift; sourceTree = "<group>"; };
 		D64D0AB02128D9AE005A6F37 /* OnboardingViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OnboardingViewController.swift; sourceTree = "<group>"; };
 		D64D8CA82463B494006B0BAA /* MultiThreadDictionary.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MultiThreadDictionary.swift; sourceTree = "<group>"; };
 		D651C5B32915B00400236EF6 /* ProfileFieldsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ProfileFieldsView.swift; sourceTree = "<group>"; };
@@ -1119,6 +1123,7 @@
 				0427033922B31269000D31B6 /* AdvancedPrefsView.swift */,
 				D67895BF246870DE00D4CD9E /* LocalAccountAvatarView.swift */,
 				D68A76ED295369C7001DA1B3 /* AcknowledgementsView.swift */,
+				D64B967B2BC19C28002C8990 /* NotificationsPrefsView.swift */,
 				D60089172981FEA4005B4D00 /* Tip Jar */,
 				D68A76EF2953910A001DA1B3 /* About */,
 			);
@@ -1181,6 +1186,14 @@
 			path = Toast;
 			sourceTree = "<group>";
 		};
+		D64B967D2BC1D43A002C8990 /* Push */ = {
+			isa = PBXGroup;
+			children = (
+				D64B967E2BC1D447002C8990 /* PushManager.swift */,
+			);
+			path = Push;
+			sourceTree = "<group>";
+		};
 		D65A37F221472F300087646E /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
@@ -1518,6 +1531,7 @@
 				D6E57FA525C26FAB00341037 /* Localizable.stringsdict */,
 				D61959D2241E846D00A37B8E /* Models */,
 				D663626021360A9600C9CBA2 /* Preferences */,
+				D64B967D2BC1D43A002C8990 /* Push */,
 				D63CC70A2910AAC6000E19DE /* Scenes */,
 				D641C780213DD7C4004B4513 /* Screens */,
 				D62D241E217AA46B005076CC /* Shortcuts */,
@@ -2124,6 +2138,7 @@
 				D6D706A029466649000827ED /* ScrollingSegmentedControl.swift in Sources */,
 				D686BBE324FBF8110068E6AA /* WrappedProgressView.swift in Sources */,
 				D620483423D3801D008A63EF /* LinkTextView.swift in Sources */,
+				D64B967F2BC1D447002C8990 /* PushManager.swift in Sources */,
 				D61F75882932DB6000C0B37F /* StatusSwipeActions.swift in Sources */,
 				D68A76EA295285D0001DA1B3 /* AddHashtagPinnedTimelineView.swift in Sources */,
 				D6F253CF2AC9F86300806D83 /* SearchTokenSuggestionCollectionViewCell.swift in Sources */,
@@ -2205,6 +2220,7 @@
 				D68E6F5F253C9B2D001A1B4C /* BaseEmojiLabel.swift in Sources */,
 				D6F0B12B24A3071C001E48C3 /* MainSplitViewController.swift in Sources */,
 				D6AEBB3E2321638100E5038B /* UIActivity+Types.swift in Sources */,
+				D64B967C2BC19C28002C8990 /* NotificationsPrefsView.swift in Sources */,
 				D61AC1D5232E9FA600C54D2D /* InstanceSelectorTableViewController.swift in Sources */,
 				D6CF5B892AC9BA6E00F15D83 /* MastodonSearchController.swift in Sources */,
 				D681E4D9246E346E0053414F /* AccountActivityItemSource.swift in Sources */,

Tusker/AppDelegate.swift

@@ -83,12 +83,17 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         
         BackgroundManager.shared.registerHandlers()
         
+        Task {
+            await PushManager.shared.updateIfNecessary()
+        }
+        
         return true
     }
     
     #if canImport(Sentry)
     private func configureSentry() {
-        guard let dsn = Bundle.main.object(forInfoDictionaryKey: "SentryDSN") as? String,
+        guard let info = Bundle.main.object(forInfoDictionaryKey: "TuskerInfo") as? [String: Any],
+              let dsn = info["SentryDSN"] as? String,
               !dsn.isEmpty else {
             return
         }
@@ -168,6 +173,14 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         }
     }
     
+    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
+        PushManager.shared.didRegisterForRemoteNotifications(deviceToken: deviceToken)
+    }
+    
+    func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: any Error) {
+        PushManager.shared.didFailToRegisterForRemoteNotifications(error: error)
+    }
+    
     #if !os(visionOS)
     private func swizzleStatusBar() {
         let selector = Selector(("handleTapAction:"))

Tusker/Info.plist

@@ -49,20 +49,14 @@
 	<key>NSAppTransportSecurity</key>
 	<dict>
 		<key>NSExceptionDomains</key>
-		<dict>
+		<dict/>
-			<key>localhost</key>
-			<dict>
-				<key>NSExceptionAllowsInsecureHTTPLoads</key>
-				<true/>
-			</dict>
-		</dict>
 	</dict>
 	<key>NSCameraUsageDescription</key>
 	<string>Post photos and videos from the camera.</string>
 	<key>NSMicrophoneUsageDescription</key>
 	<string>Post videos from the camera.</string>
 	<key>NSPhotoLibraryAddUsageDescription</key>
-	<string>Save photos directly from other people&apos;s posts.</string>
+	<string>Save photos directly from other people's posts.</string>
 	<key>NSPhotoLibraryUsageDescription</key>
 	<string>Post photos from the photo library.</string>
 	<key>NSUserActivityTypes</key>
@@ -106,8 +100,15 @@
 			</dict>
 		</dict>
 	</dict>
-	<key>SentryDSN</key>
+	<key>TuskerInfo</key>
-	<string>$(SENTRY_DSN)</string>
+	<dict>
+		<key>PushProxyHost</key>
+		<string>$(TUSKER_PUSH_PROXY_HOST)</string>
+		<key>PushProxyScheme</key>
+		<string>$(TUSKER_PUSH_PROXY_SCHEME)</string>
+		<key>SentryDSN</key>
+		<string>$(SENTRY_DSN)</string>
+	</dict>
 	<key>UIApplicationSceneManifest</key>
 	<dict>
 		<key>UIApplicationSupportsMultipleScenes</key>

Tusker/Push/PushManager.swift

@@ -0,0 +1,324 @@
+//
+//  PushManager.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 4/6/24.
+//  Copyright © 2024 Shadowfacts. All rights reserved.
+//
+
+import Foundation
+import OSLog
+#if canImport(Sentry)
+import Sentry
+#endif
+
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier!, category: "PushManager")
+
+@MainActor
+struct PushManager {
+    static let shared = createPushManager()
+    
+    private init() {}
+    
+    private static func createPushManager() -> any _PushManager {
+        guard let info = Bundle.main.object(forInfoDictionaryKey: "TuskerInfo") as? [String: Any],
+              let scheme = info["PushProxyScheme"] as? String,
+              let host = info["PushProxyHost"] as? String,
+              !scheme.isEmpty,
+              !host.isEmpty else {
+            logger.debug("Missing proxy info, push disabled")
+            return DisabledPushManager()
+        }
+        var endpoint = URLComponents()
+        endpoint.scheme = scheme
+        endpoint.host = host
+        let url = endpoint.url!
+        logger.debug("Push notifications enabled with proxy \(url.absoluteString, privacy: .public)")
+        return PushManagerImpl(endpoint: url)
+    }
+}
+
+@MainActor
+protocol _PushManager {
+    var enabled: Bool { get }
+    var pushProxyRegistration: PushProxyRegistration? { get }
+    
+    func register(transactionID: UInt64) async throws -> PushProxyRegistration
+    func unregister() async throws
+    func updateIfNecessary() async
+    
+    func didRegisterForRemoteNotifications(deviceToken: Data)
+    func didFailToRegisterForRemoteNotifications(error: any Error)
+}
+
+private class DisabledPushManager: _PushManager {
+    var enabled: Bool {
+        false
+    }
+    
+    var pushProxyRegistration: PushProxyRegistration? {
+        nil
+    }
+    
+    func register(transactionID: UInt64) async throws -> PushProxyRegistration {
+        throw Disabled()
+    }
+    
+    func unregister() async throws {
+        throw Disabled()
+    }
+    
+    func updateIfNecessary() async {
+    }
+    
+    func didRegisterForRemoteNotifications(deviceToken: Data) {
+    }
+    func didFailToRegisterForRemoteNotifications(error: any Error) {
+    }
+    
+    struct Disabled: LocalizedError {
+        var errorDescription: String? {
+            "Push notifications disabled"
+        }
+    }
+}
+
+private class PushManagerImpl: _PushManager {
+    private let endpoint: URL
+    
+    var enabled: Bool {
+        true
+    }
+    
+    private var apnsEnvironment: String {
+        #if DEBUG
+        "development"
+        #else
+        "release"
+        #endif
+    }
+    
+    private var remoteNotificationsRegistrationContinuation: CheckedContinuation<Data, any Error>?
+    
+    private let defaults = UserDefaults(suiteName: "group.space.vaccor.Tusker")!
+    private(set) var pushProxyRegistration: PushProxyRegistration? {
+        get {
+            if let dict = defaults.dictionary(forKey: "PushProxyRegistration") as? [String: String],
+               let registration = PushProxyRegistration(defaultsDict: dict) {
+                return registration
+            } else {
+                return nil
+            }
+        }
+        set {
+            defaults.setValue(newValue?.defaultsDict, forKey: "PushProxyRegistration")
+        }
+    }
+    
+    init(endpoint: URL) {
+        self.endpoint = endpoint
+    }
+    
+    func register(transactionID: UInt64) async throws -> PushProxyRegistration {
+        guard remoteNotificationsRegistrationContinuation == nil else {
+            throw PushRegistrationError.alreadyRegistering
+        }
+        let deviceToken = try await getDeviceToken()
+        logger.debug("Got device token: \(deviceToken.hexEncodedString())")
+        let registration: PushProxyRegistration
+        do {
+            registration = try await register(deviceToken: deviceToken)
+            logger.debug("Got endpoint: \(registration.endpoint)")
+        } catch {
+            logger.error("Proxy registration failed: \(String(describing: error))")
+            throw PushRegistrationError.registeringWithProxy(error)
+        }
+        pushProxyRegistration = registration
+        return registration
+    }
+    
+    func unregister() async throws {
+        guard let pushProxyRegistration else {
+            return
+        }
+        var url = URLComponents(url: endpoint, resolvingAgainstBaseURL: false)!
+        url.path = "/app/v1/registrations/\(pushProxyRegistration.id)"
+        var request = URLRequest(url: url.url!)
+        request.httpMethod = "DELETE"
+        let (_, resp) = try await URLSession.shared.data(for: request)
+        let status = (resp as! HTTPURLResponse).statusCode
+        if !(200...299).contains(status) {
+            logger.error("Unregistering: unexpected status \(status)")
+        }
+    }
+    
+    func updateIfNecessary() async {
+        guard let pushProxyRegistration else {
+            return
+        }
+        logger.debug("Push proxy registration: \(pushProxyRegistration.id, privacy: .public)")
+        do {
+            let token = try await getDeviceToken()
+            
+            let newRegistration = try await update(registration: pushProxyRegistration, deviceToken: token)
+            if pushProxyRegistration.endpoint != newRegistration.endpoint {
+                // TODO: update subscriptions if the endpoint's changed
+            }
+        } catch {
+            logger.error("Failed to update push registration: \(String(describing: error), privacy: .public)")
+            #if canImport(Sentry)
+            SentrySDK.capture(error: error)
+            #endif
+        }
+    }
+    
+    private func getDeviceToken() async throws -> Data {
+        defer {
+            remoteNotificationsRegistrationContinuation = nil
+        }
+        return try await withCheckedThrowingContinuation { continuation in
+            remoteNotificationsRegistrationContinuation = continuation
+            UIApplication.shared.registerForRemoteNotifications()
+        }
+    }
+    
+    func didRegisterForRemoteNotifications(deviceToken: Data) {
+        remoteNotificationsRegistrationContinuation?.resume(returning: deviceToken)
+    }
+    
+    func didFailToRegisterForRemoteNotifications(error: any Error) {
+        remoteNotificationsRegistrationContinuation?.resume(throwing: PushRegistrationError.registeringForRemoteNotifications(error))
+    }
+    
+    private func register(deviceToken: Data) async throws -> PushProxyRegistration {
+        var url = URLComponents(url: endpoint, resolvingAgainstBaseURL: false)!
+        url.path = "/app/v1/registrations"
+        var request = URLRequest(url: url.url!)
+        request.httpMethod = "POST"
+        request.setValue("application/json", forHTTPHeaderField: "content-type")
+        request.httpBody = try! JSONEncoder().encode(PushRegistrationParams(transactionID: "TODO", environment: apnsEnvironment, deviceToken: deviceToken.hexEncodedString(), pushVersion: 1))
+        let (data, resp) = try await URLSession.shared.data(for: request)
+        let status = (resp as! HTTPURLResponse).statusCode
+        guard (200...299).contains(status) else {
+            logger.error("Registering: unexpected status \(status)")
+            let error = (try? JSONDecoder().decode(ProxyRegistrationError.self, from: data)) ?? ProxyRegistrationError(error: "Unknown error", fields: [])
+            throw error
+        }
+        return try JSONDecoder().decode(PushProxyRegistration.self, from: data)
+    }
+    
+    private func update(registration: PushProxyRegistration, deviceToken: Data) async throws -> PushProxyRegistration {
+        var url = URLComponents(url: endpoint, resolvingAgainstBaseURL: false)!
+        url.path = "/app/v1/registrations/\(registration.id)"
+        var request = URLRequest(url: url.url!)
+        request.httpMethod = "PUT"
+        request.setValue("application/json", forHTTPHeaderField: "content-type")
+        request.httpBody = try! JSONEncoder().encode(PushUpdateParams(environment: apnsEnvironment, deviceToken: deviceToken.hexEncodedString(), pushVersion: 1))
+        let (data, resp) = try await URLSession.shared.data(for: request)
+        let status = (resp as! HTTPURLResponse).statusCode
+        guard (200...299).contains(status) else {
+            logger.error("Updating: unexpected status \(status)")
+            let error = (try? JSONDecoder().decode(ProxyRegistrationError.self, from: data)) ?? ProxyRegistrationError(error: "Unknown error", fields: [])
+            throw error
+        }
+        return try JSONDecoder().decode(PushProxyRegistration.self, from: data)
+    }
+}
+
+enum PushRegistrationError: LocalizedError {
+    case alreadyRegistering
+    case registeringForRemoteNotifications(any Error)
+    case registeringWithProxy(any Error)
+    
+    var errorDescription: String? {
+        switch self {
+        case .alreadyRegistering:
+            "Already registering"
+        case .registeringForRemoteNotifications(let error):
+            "Remote notifications: \(error.localizedDescription)"
+        case .registeringWithProxy(let error):
+            "Proxy: \(error.localizedDescription)"
+        }
+    }
+}
+
+struct ProxyRegistrationError: LocalizedError, Decodable {
+    let error: String
+    let fields: [Field]?
+    
+    var errorDescription: String? {
+        if let fields,
+           !fields.isEmpty {
+            error + ": " + fields.map { "\($0.key): \($0.reason)" }.joined(separator: ", ")
+        } else {
+            error
+        }
+    }
+    
+    struct Field: Decodable {
+        let key: String
+        let reason: String
+    }
+}
+
+private struct PushRegistrationParams: Encodable {
+    let transactionID: String
+    let environment: String
+    let deviceToken: String
+    let pushVersion: Int
+    
+    enum CodingKeys: String, CodingKey {
+        case transactionID = "transaction_id"
+        case environment
+        case deviceToken = "device_token"
+        case pushVersion = "push_version"
+    }
+}
+
+private struct PushUpdateParams: Encodable {
+    let environment: String
+    let deviceToken: String
+    let pushVersion: Int
+    
+    enum CodingKeys: String, CodingKey {
+        case environment
+        case deviceToken = "device_token"
+        case pushVersion = "push_version"
+    }
+}
+
+struct PushProxyRegistration: Decodable {
+    let id: String
+    let endpoint: URL
+    
+    fileprivate var defaultsDict: [String: String] {
+        [
+            "id": id,
+            "endpoint": endpoint.absoluteString
+        ]
+    }
+    
+    fileprivate init?(defaultsDict: [String: String]) {
+        guard let id = defaultsDict["id"],
+              let endpoint = defaultsDict["endpoint"],
+              let endpointURL = URL(string: endpoint) else {
+            return nil
+        }
+        self.id = id
+        self.endpoint = endpointURL
+    }
+}
+
+private extension Data {
+    func hexEncodedString() -> String {
+        String(unsafeUninitializedCapacity: count * 2) { buffer in
+            let chars = Array("0123456789ABCDEF".utf8)
+            for (i, x) in enumerated() {
+                let (upper, lower) = x.quotientAndRemainder(dividingBy: 16)
+                buffer[i * 2] = chars[Int(upper)]
+                buffer[i * 2 + 1] = chars[Int(lower)]
+            }
+            return count * 2
+        }
+    }
+}

Tusker/Screens/Preferences/NotificationsPrefsView.swift

@@ -0,0 +1,129 @@
+//
+//  NotificationsPrefsView.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 4/6/24.
+//  Copyright © 2024 Shadowfacts. All rights reserved.
+//
+
+import SwiftUI
+import UserNotifications
+
+struct NotificationsPrefsView: View {
+    @State private var error: NotificationsSetupError?
+    @State private var isSetup = false
+    @State private var working = false
+    @State private var pushProxyRegistration: PushProxyRegistration?
+    
+    var body: some View {
+        List {
+            enableSection
+        }
+        .listStyle(.insetGrouped)
+        .appGroupedListBackground(container: PreferencesNavigationController.self)
+        .navigationTitle("Notifications")
+    }
+    
+    private var enableSection: some View {
+        Section {
+            HStack {
+                Text("Push Notifications")
+                
+                Spacer()
+                
+                if working {
+                    ProgressView()
+                } else {
+                    Toggle("Push Notifications Enabled", isOn: Binding(get: {
+                        isSetup
+                    }, set: { newValue in
+                        isSetup = newValue
+                        isSetupChanged(newValue: newValue)
+                    }))
+                    .labelsHidden()
+                }
+            }
+        }
+        .alertWithData("An Error Occurred", data: $error) { error in
+            Button("OK") {}
+        } message: { error in
+            Text(error.localizedDescription)
+        }
+        .task { @MainActor in
+            pushProxyRegistration = PushManager.shared.pushProxyRegistration
+            isSetup = pushProxyRegistration != nil
+            if !UIApplication.shared.isRegisteredForRemoteNotifications {
+                _ = await registerForRemoteNotifications()
+            }
+        }
+    }
+    
+    private func isSetupChanged(newValue: Bool) {
+        working = true
+        Task {
+            defer {
+                working = false
+            }
+            let success = if newValue {
+                await startRegistration()
+            } else {
+                await unregister()
+            }
+            if !success {
+                isSetup = !newValue
+            }
+        }
+    }
+    
+    private func startRegistration() async -> Bool {
+        let authorized: Bool
+        do {
+            authorized = try await UNUserNotificationCenter.current().requestAuthorization(options: [.alert])
+        } catch {
+            self.error = .requestingAuthorization(error)
+            return false
+        }
+        guard authorized else {
+            return false
+        }
+        return await registerForRemoteNotifications()
+    }
+    
+    private func registerForRemoteNotifications() async -> Bool {
+        do {
+            pushProxyRegistration = try await PushManager.shared.register(transactionID: 0)
+            return true
+        } catch {
+            self.error = .registering(error)
+            return false
+        }
+    }
+    
+    private func unregister() async -> Bool {
+        do {
+            try await PushManager.shared.unregister()
+            pushProxyRegistration = nil
+            return true
+        } catch {
+            self.error = .unregistering(error)
+            return false
+        }
+    }
+}
+
+private enum NotificationsSetupError: LocalizedError {
+    case requestingAuthorization(any Error)
+    case registering(any Error)
+    case unregistering(any Error)
+    
+    var errorDescription: String? {
+        switch self {
+        case .requestingAuthorization(let error):
+            "Notifications authorization request failed: \(error.localizedDescription)"
+        case .registering(let error):
+            "Registration failed: \(error.localizedDescription)"
+        case .unregistering(let error):
+            "Deactivation failed: \(error.localizedDescription)"
+        }
+    }
+}

Tusker/Screens/Preferences/PreferencesView.swift

@@ -22,6 +22,7 @@ struct PreferencesView: View {
     var body: some View {
         List {
             accountsSection
+            notificationsSection
             preferencesSection
             aboutSection
         }
@@ -95,6 +96,15 @@ struct PreferencesView: View {
         .appGroupedListRowBackground()
     }
     
+    private var notificationsSection: some View {
+        Section {
+            NavigationLink(destination: NotificationsPrefsView()) {
+                Text("Notifications")
+            }
+        }
+        .appGroupedListRowBackground()
+    }
+    
     private var preferencesSection: some View {
         Section {
             NavigationLink(destination: AppearancePrefsView()) {

Tusker/Tusker.entitlements

@@ -18,6 +18,8 @@
 	</array>
 	<key>com.apple.developer.ubiquity-kvstore-identifier</key>
 	<string>$(TeamIdentifierPrefix)$(CFBundleIdentifier)</string>
+	<key>com.apple.developer.usernotifications.communication</key>
+	<true/>
 	<key>com.apple.security.app-sandbox</key>
 	<true/>
 	<key>com.apple.security.application-groups</key>