139 lines
5.2 KiB
Swift
139 lines
5.2 KiB
Swift
//
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// Copyright 2022 New Vector Ltd
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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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import Intents
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import MatrixRustSDK
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import UserNotifications
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class NotificationServiceExtension: UNNotificationServiceExtension {
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private let settings = NSESettings()
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private lazy var keychainController = KeychainController(service: .sessions,
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accessGroup: InfoPlistReader.main.keychainAccessGroupIdentifier)
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private var handler: ((UNNotificationContent) -> Void)?
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private var modifiedContent: UNMutableNotificationContent?
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override func didReceive(_ request: UNNotificationRequest,
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withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
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guard !DataProtectionManager.isDeviceLockedAfterReboot(containerURL: URL.appGroupContainerDirectory),
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let roomId = request.roomId,
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let eventId = request.eventId,
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let clientID = request.pusherNotificationClientIdentifier,
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let credentials = keychainController.restorationTokens().first(where: { $0.restorationToken.pusherNotificationClientIdentifier == clientID }) else {
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// We cannot process this notification, it might be due to one of these:
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// - Device rebooted and locked
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// - Not a Matrix notification
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// - User is not signed in
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// - NotificationID could not be resolved
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return contentHandler(request.content)
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}
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handler = contentHandler
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modifiedContent = request.content.mutableCopy() as? UNMutableNotificationContent
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NSELogger.configure()
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NSELogger.logMemory(with: tag)
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MXLog.info("\(tag) #########################################")
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MXLog.info("\(tag) Payload came: \(request.content.userInfo)")
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Task {
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await run(with: credentials,
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roomId: roomId,
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eventId: eventId)
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}
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}
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override func serviceExtensionTimeWillExpire() {
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// Called just before the extension will be terminated by the system.
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// Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
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MXLog.warning("\(tag) serviceExtensionTimeWillExpire")
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notify()
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}
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private func run(with credentials: KeychainCredentials,
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roomId: String,
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eventId: String) async {
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MXLog.info("\(tag) run with roomId: \(roomId), eventId: \(eventId)")
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do {
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let userSession = try NSEUserSession(credentials: credentials)
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let itemProxy = try await userSession.notificationItemProxy(roomID: roomId, eventID: eventId)
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// After the first processing, update the modified content
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modifiedContent = try await itemProxy.process(mediaProvider: nil)
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guard itemProxy.requiresMediaProvider else {
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MXLog.info("\(tag) no media needed")
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// We've processed the item and no media operations needed, so no need to go further
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return notify()
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}
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MXLog.info("\(tag) process with media")
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// There is some media to load, process it again
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if let latestContent = try? await itemProxy.process(mediaProvider: userSession.mediaProvider) {
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// Processing finished, hopefully with some media
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modifiedContent = latestContent
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}
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// We still notify, but without the media attachment if it fails to load
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return notify()
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} catch {
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MXLog.error("NSE run error: \(error)")
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return discard()
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}
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}
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private func notify() {
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MXLog.info("\(tag) notify")
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guard let modifiedContent else {
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MXLog.info("\(tag) notify: no modified content")
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return discard()
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}
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guard let identifier = modifiedContent.notificationID,
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!settings.servedNotificationIdentifiers.contains(identifier) else {
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MXLog.info("\(tag) notify: notification already served")
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return discard()
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}
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settings.servedNotificationIdentifiers.insert(identifier)
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handler?(modifiedContent)
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handler = nil
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self.modifiedContent = nil
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}
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private func discard() {
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MXLog.info("\(tag) discard")
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handler?(UNMutableNotificationContent())
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handler = nil
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modifiedContent = nil
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}
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private var tag: String {
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"[NSE][\(Unmanaged.passUnretained(self).toOpaque())][\(Unmanaged.passUnretained(Thread.current).toOpaque())]"
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}
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deinit {
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NSELogger.logMemory(with: tag)
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MXLog.info("\(tag) deinit")
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}
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}
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