NetNewsWire/Shared/UserNotifications/UserNotificationManager.swift

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Swift
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//
// NotificationManager.swift
// NetNewsWire
//
// Created by Maurice Parker on 10/2/19.
// Copyright © 2019 Ranchero Software. All rights reserved.
//
import Foundation
import Account
import Articles
import UserNotifications
final class UserNotificationManager: NSObject {
override init() {
super.init()
NotificationCenter.default.addObserver(self, selector: #selector(accountDidDownloadArticles(_:)), name: .AccountDidDownloadArticles, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(statusesDidChange(_:)), name: .StatusesDidChange, object: nil)
}
@objc func accountDidDownloadArticles(_ note: Notification) {
guard let articles = note.userInfo?[Account.UserInfoKey.newArticles] as? Set<Article> else {
return
}
for article in articles {
if !article.status.read, let webFeed = article.webFeed, webFeed.isNotifyAboutNewArticles ?? false {
sendNotification(webFeed: webFeed, article: article)
}
}
}
@objc func statusesDidChange(_ note: Notification) {
guard let articleIDs = note.userInfo?[Account.UserInfoKey.articleIDs] as? Set<String>, !articleIDs.isEmpty else {
return
}
let identifiers = articleIDs.map { "articleID:\($0)" }
UNUserNotificationCenter.current().removeDeliveredNotifications(withIdentifiers: identifiers)
}
}
private extension UserNotificationManager {
private func sendNotification(webFeed: WebFeed, article: Article) {
let content = UNMutableNotificationContent()
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content.title = webFeed.nameForDisplay
content.body = ArticleStringFormatter.truncatedTitle(article)
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if content.body.isEmpty {
content.body = ArticleStringFormatter.truncatedSummary(article)
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}
content.sound = UNNotificationSound.default
content.userInfo = [UserInfoKey.articlePath: article.pathUserInfo]
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let request = UNNotificationRequest.init(identifier: "articleID:\(article.articleID)", content: content, trigger: nil)
UNUserNotificationCenter.current().add(request)
}
}