121 lines
4.6 KiB
Swift
121 lines
4.6 KiB
Swift
//
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// NotificationService.swift
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// NotificationService
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//
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// Created by Matias Carulli on 5/7/26.
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//
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import UserNotifications
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import Intents
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class NotificationService: UNNotificationServiceExtension {
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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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bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
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guard
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let content = bestAttemptContent,
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let imageUrlString = request.content.userInfo["imageUrl"] as? String,
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let imageUrl = URL(string: imageUrlString)
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else {
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contentHandler(request.content)
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return
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}
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let userInfo = request.content.userInfo
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// Download the avatar (the sending network's photo), then render the
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// notification. A data task lets us hand the bytes straight to INImage.
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URLSession.shared.dataTask(with: imageUrl) { data, _, error in
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guard let data = data, !data.isEmpty, error == nil else {
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contentHandler(content)
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return
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}
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// iOS 15+: render as a communication notification — large circular
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// avatar with the app icon badged in the corner.
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if #available(iOS 15.0, *) {
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self.deliverAsCommunicationNotification(content: content, imageData: data, userInfo: userInfo, contentHandler: contentHandler)
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} else {
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// iOS 14 fallback: attach the image as a plain thumbnail.
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let tmpFile = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent("avatar.png")
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try? data.write(to: tmpFile)
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if let attachment = try? UNNotificationAttachment(identifier: "avatar", url: tmpFile) {
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content.attachments = [attachment]
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}
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contentHandler(content)
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}
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}.resume()
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}
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@available(iOS 15.0, *)
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private func deliverAsCommunicationNotification(
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content: UNMutableNotificationContent,
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imageData: Data,
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userInfo: [AnyHashable: Any],
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contentHandler: @escaping (UNNotificationContent) -> Void
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) {
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// The conversation title shown in bold. Defaults to the notification's own
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// title so existing copy (e.g. "Group | Alice") is preserved.
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let senderName = (userInfo["senderName"] as? String) ?? content.title
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let isGroup = (userInfo["isGroup"] as? Bool) ?? false
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// Group related notifications into one conversation so iOS stacks them.
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let conversationId = (userInfo["conversationId"] as? String)
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?? (userInfo["threadId"] as? String)
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?? content.threadIdentifier
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let avatar = INImage(imageData: imageData)
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let handle = INPersonHandle(value: conversationId, type: .unknown)
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let sender = INPerson(
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personHandle: handle,
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nameComponents: nil,
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displayName: senderName,
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image: avatar,
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contactIdentifier: nil,
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customIdentifier: conversationId
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)
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let intent = INSendMessageIntent(
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recipients: nil,
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outgoingMessageType: .outgoingMessageText,
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content: content.body,
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speakableGroupName: isGroup ? INSpeakableString(spokenPhrase: senderName) : nil,
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conversationIdentifier: conversationId,
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serviceName: nil,
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sender: sender,
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attachments: nil
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)
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// For a group conversation the avatar comes from the group image; for a
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// 1:1 it comes from the sender's INPerson image (set above).
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if isGroup {
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intent.setImage(avatar, forParameterNamed: \.speakableGroupName)
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}
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let interaction = INInteraction(intent: intent, response: nil)
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interaction.direction = .incoming
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interaction.donate(completion: nil)
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do {
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let updated = try content.updating(from: intent)
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contentHandler(updated)
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} catch {
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// If the intent can't be applied, fall back to the unmodified content
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// so the notification still shows.
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contentHandler(content)
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}
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}
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override func serviceExtensionTimeWillExpire() {
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if let contentHandler = contentHandler, let content = bestAttemptContent {
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contentHandler(content)
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}
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}
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}
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