48 lines
2.4 KiB
Swift
48 lines
2.4 KiB
Swift
import UserNotifications
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import CoreData
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/// This app extension is responsible for persisting the incoming notification to the data store (Core Data). It will eventually be the entity that
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/// fetches notification content from selfhosted servers (when a "poll request" is received). This is not implemented yet.
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///
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/// Note that the app extension does not run as part of the main app, so log messages are not printed in the main Xcode window. To debug,
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/// select Debug -> Attach to Process by PID or Name, and select the extension. Don't forget to set a breakpoint, or you're not gonna have a good time.
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class NotificationService: UNNotificationServiceExtension {
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let tag = "NotificationService"
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var contentHandler: ((UNNotificationContent) -> Void)?
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var bestAttemptContent: UNMutableNotificationContent?
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override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
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self.contentHandler = contentHandler
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self.bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
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Log.d(tag, "Notification received (in service)") // Logs from extensions are not printed in Xcode!
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if let bestAttemptContent = bestAttemptContent {
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let userInfo = bestAttemptContent.userInfo
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// Set notification title to short URL if there is no title. The title is always set
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// by the server, but it may be empty.
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if let topic = userInfo["topic"] as? String,
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let title = userInfo["title"] as? String {
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if title == "" {
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bestAttemptContent.title = topicShortUrl(baseUrl: appBaseUrl, topic: topic)
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}
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}
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// Save notification to store, and display it
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Store.shared.save(notificationFromUserInfo: userInfo)
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contentHandler(bestAttemptContent)
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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,
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// otherwise the original push payload will be used.
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if let contentHandler = contentHandler, let bestAttemptContent = bestAttemptContent {
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contentHandler(bestAttemptContent)
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}
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}
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}
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