79 lines
3.4 KiB
Swift
79 lines
3.4 KiB
Swift
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import Foundation
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import UserNotifications
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private let actionsCategory = "ntfyActions" // It seems ok to re-use the same category
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extension UNMutableNotificationContent {
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func modify(message: Message, baseUrl: String) {
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// Body and title
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if let body = message.message {
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self.body = body
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}
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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 title = message.title, title != "" {
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self.title = title
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} else {
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self.title = topicShortUrl(baseUrl: baseUrl, topic: message.topic)
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}
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// Emojify title or message
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let emojiTags = parseEmojiTags(message.tags)
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if !emojiTags.isEmpty {
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if let title = message.title, title != "" {
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self.title = emojiTags.joined(separator: "") + " " + self.title
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} else {
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self.body = emojiTags.joined(separator: "") + " " + self.body
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}
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}
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// Add custom actions
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//
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// We re-define the categories every time here, which is weird, but it works. When tapped, the action sets the
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// actionIdentifier in the application(didReceive) callback. This logic is handled in the AppDelegate. This approach
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// is described in a comment in https://stackoverflow.com/questions/30103867/changing-action-titles-in-interactive-notifications-at-run-time#comment122812568_30107065
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//
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// We also must set the .foreground flag, which brings the notification to the foreground and avoids an error about
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// permissions. This is described in https://stackoverflow.com/a/44580916/1440785
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if let actions = message.actions, !actions.isEmpty {
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self.categoryIdentifier = actionsCategory
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let center = UNUserNotificationCenter.current()
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let notificationActions = actions.map { UNNotificationAction(identifier: $0.id, title: $0.label, options: [.foreground]) }
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let category = UNNotificationCategory(identifier: actionsCategory, actions: notificationActions, intentIdentifiers: [])
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center.setNotificationCategories([category])
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}
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// Play a sound, and group by topic
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self.sound = .default
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self.threadIdentifier = topicUrl(baseUrl: baseUrl, topic: message.topic)
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// Map priorities to interruption level (light up screen, ...) and relevance (order)
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if #available(iOS 15.0, *) {
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switch message.priority {
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case 1:
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self.interruptionLevel = .passive
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self.relevanceScore = 0
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case 2:
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self.interruptionLevel = .passive
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self.relevanceScore = 0.25
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case 4:
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self.interruptionLevel = .timeSensitive
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self.relevanceScore = 0.75
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case 5:
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self.interruptionLevel = .critical
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self.relevanceScore = 1
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default:
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self.interruptionLevel = .active
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self.relevanceScore = 0.5
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}
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}
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// Make sure the userInfo matches, so that when the notification is tapped, the AppDelegate
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// can properly navigate to the right topic and re-assemble the message.
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self.userInfo = message.toUserInfo()
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self.userInfo["base_url"] = baseUrl
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}
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}
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