NetNewsWire/Shared/UserNotifications/UserNotificationManager.swift

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3.8 KiB
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)
registerCategoriesAndActions()
}
@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 {
func sendNotification(webFeed: WebFeed, article: Article) {
let content = UNMutableNotificationContent()
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content.title = webFeed.nameForDisplay
if !ArticleStringFormatter.truncatedTitle(article).isEmpty {
content.subtitle = ArticleStringFormatter.truncatedTitle(article)
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}
content.body = ArticleStringFormatter.truncatedSummary(article)
content.threadIdentifier = webFeed.webFeedID
content.summaryArgument = "\(webFeed.nameForDisplay)"
content.summaryArgumentCount = 1
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content.sound = UNNotificationSound.default
content.userInfo = [UserInfoKey.articlePath: article.pathUserInfo]
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content.categoryIdentifier = "NEW_ARTICLE_NOTIFICATION_CATEGORY"
if let attachment = thumbnailAttachment(for: article, webFeed: webFeed) {
content.attachments.append(attachment)
}
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let request = UNNotificationRequest.init(identifier: "articleID:\(article.articleID)", content: content, trigger: nil)
UNUserNotificationCenter.current().add(request)
}
/// Determine if there is an available icon for the article. This will then move it to the caches directory and make it avialble for the notification.
/// - Parameters:
/// - article: `Article`
/// - webFeed: `WebFeed`
/// - Returns: A `UNNotifcationAttachment` if an icon is available. Otherwise nil.
/// - Warning: In certain scenarios, this will return the `faviconTemplateImage`.
func thumbnailAttachment(for article: Article, webFeed: WebFeed) -> UNNotificationAttachment? {
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if let imageURL = article.iconImageUrl(webFeed: webFeed) {
let thumbnail = try? UNNotificationAttachment(identifier: webFeed.webFeedID, url: imageURL, options: nil)
return thumbnail
}
return nil
}
func registerCategoriesAndActions() {
let readAction = UNNotificationAction(identifier: "MARK_AS_READ", title: NSLocalizedString("Mark as Read", comment: "Mark as Read"), options: [])
let starredAction = UNNotificationAction(identifier: "MARK_AS_STARRED", title: NSLocalizedString("Mark as Starred", comment: "Mark as Starred"), options: [])
let openAction = UNNotificationAction(identifier: "OPEN_ARTICLE", title: NSLocalizedString("Open", comment: "Open"), options: [.foreground])
let newArticleCategory =
UNNotificationCategory(identifier: "NEW_ARTICLE_NOTIFICATION_CATEGORY",
actions: [openAction, readAction, starredAction],
intentIdentifiers: [],
hiddenPreviewsBodyPlaceholder: "",
options: .customDismissAction)
UNUserNotificationCenter.current().setNotificationCategories([newArticleCategory])
}
}