NetNewsWire/iOS/AppDelegate.swift

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//
// AppDelegate.swift
// NetNewsWire
//
// Created by Maurice Parker on 4/8/19.
// Copyright © 2019 Ranchero Software. All rights reserved.
//
import UIKit
import RSCore
import RSWeb
import Account
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import UserNotifications
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import BackgroundTasks
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import os.log
var appDelegate: AppDelegate!
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UISplitViewControllerDelegate, UnreadCountProvider {
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private var syncBackgroundUpdateTask = UIBackgroundTaskIdentifier.invalid
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var syncTimer: ArticleStatusSyncTimer?
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var shuttingDown = false {
didSet {
if shuttingDown {
syncTimer?.shuttingDown = shuttingDown
syncTimer?.invalidate()
}
}
}
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var log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "application")
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var faviconDownloader: FaviconDownloader!
var imageDownloader: ImageDownloader!
var authorAvatarDownloader: AuthorAvatarDownloader!
var feedIconDownloader: FeedIconDownloader!
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var unreadCount = 0 {
didSet {
if unreadCount != oldValue {
postUnreadCountDidChangeNotification()
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UIApplication.shared.applicationIconBadgeNumber = unreadCount
}
}
}
override init() {
super.init()
appDelegate = self
// Force lazy initialization of the web view provider so that it can warm up the queue of prepared web views
let _ = DetailViewControllerWebViewProvider.shared
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let accountsURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.\(Bundle.main.bundleIdentifier!)")
let accountsFolder = accountsURL!.appendingPathComponent("Accounts").absoluteString
let accountsFolderPath = accountsFolder.suffix(from: accountsFolder.index(accountsFolder.startIndex, offsetBy: 7))
AccountManager.shared = AccountManager(accountsFolder: String(accountsFolderPath))
AppDefaults.shared = UserDefaults.init(suiteName: "group.\(Bundle.main.bundleIdentifier!)")!
registerBackgroundTasks()
NotificationCenter.default.addObserver(self, selector: #selector(unreadCountDidChange(_:)), name: .UnreadCountDidChange, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(accountRefreshDidFinish(_:)), name: .AccountRefreshDidFinish, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(userDefaultsDidChange(_:)), name: UserDefaults.didChangeNotification, object: nil)
}
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func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
AppDefaults.registerDefaults()
let isFirstRun = AppDefaults.isFirstRun
if isFirstRun {
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os_log("Is first run.", log: log, type: .info)
}
let localAccount = AccountManager.shared.defaultAccount
DefaultFeedsImporter.importIfNeeded(isFirstRun, account: localAccount)
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initializeDownloaders()
initializeHomeScreenQuickActions()
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DispatchQueue.main.async {
self.unreadCount = AccountManager.shared.unreadCount
}
UNUserNotificationCenter.current().requestAuthorization(options:[.badge, .sound, .alert]) { (granted, error) in
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if granted {
DispatchQueue.main.async {
UIApplication.shared.registerForRemoteNotifications()
}
}
}
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syncTimer = ArticleStatusSyncTimer()
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#if DEBUG
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syncTimer!.update()
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#endif
return true
}
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func applicationWillTerminate(_ application: UIApplication) {
shuttingDown = true
}
// MARK: Notifications
@objc func unreadCountDidChange(_ note: Notification) {
if note.object is AccountManager {
unreadCount = AccountManager.shared.unreadCount
}
}
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@objc func userDefaultsDidChange(_ note: Notification) {
scheduleBackgroundFeedRefresh()
}
@objc func accountRefreshDidFinish(_ note: Notification) {
AppDefaults.lastRefresh = Date()
}
// MARK: - API
func prepareAccountsForBackground() {
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syncTimer?.invalidate()
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// Schedule background app refresh
scheduleBackgroundFeedRefresh()
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// Sync article status
let completeProcessing = { [unowned self] in
UIApplication.shared.endBackgroundTask(self.syncBackgroundUpdateTask)
self.syncBackgroundUpdateTask = UIBackgroundTaskIdentifier.invalid
}
DispatchQueue.global(qos: .background).async {
self.syncBackgroundUpdateTask = UIApplication.shared.beginBackgroundTask {
completeProcessing()
os_log("Accounts sync processing terminated for running too long.", log: self.log, type: .info)
}
DispatchQueue.main.async {
AccountManager.shared.syncArticleStatusAll() {
completeProcessing()
}
}
}
}
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func prepareAccountsForForeground() {
if let lastRefresh = AppDefaults.lastRefresh {
if Date() > lastRefresh.addingTimeInterval(15 * 60) {
AccountManager.shared.refreshAll(errorHandler: ErrorHandler.log)
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} else {
AccountManager.shared.syncArticleStatusAll()
syncTimer?.update()
}
} else {
AccountManager.shared.refreshAll(errorHandler: ErrorHandler.log)
}
}
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func logMessage(_ message: String, type: LogItem.ItemType) {
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print("logMessage: \(message) - \(type)")
}
func logDebugMessage(_ message: String) {
logMessage(message, type: .debug)
}
}
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// MARK: App Initialization
private extension AppDelegate {
private func initializeDownloaders() {
let tempDir = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first!
let faviconsFolderURL = tempDir.appendingPathComponent("Favicons")
let imagesFolderURL = tempDir.appendingPathComponent("Images")
let homePageToIconURL = tempDir.appendingPathComponent("HomePageToIconURLCache.plist")
// If the image disk cache hasn't been flushed for 3 days and the network is available, delete it
if let flushDate = AppDefaults.lastImageCacheFlushDate, flushDate.addingTimeInterval(3600*24*3) < Date() {
if let reachability = try? Reachability(hostname: "apple.com") {
if reachability.connection != .unavailable {
for tempItem in [faviconsFolderURL, imagesFolderURL, homePageToIconURL] {
do {
os_log(.info, log: self.log, "Removing cache file: %@", tempItem.absoluteString)
try FileManager.default.removeItem(at: tempItem)
} catch {
os_log(.error, log: self.log, "Could not delete cache file: %@", error.localizedDescription)
}
}
AppDefaults.lastImageCacheFlushDate = Date()
}
}
}
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try! FileManager.default.createDirectory(at: faviconsFolderURL, withIntermediateDirectories: true, attributes: nil)
let faviconsFolder = faviconsFolderURL.absoluteString
let faviconsFolderPath = faviconsFolder.suffix(from: faviconsFolder.index(faviconsFolder.startIndex, offsetBy: 7))
faviconDownloader = FaviconDownloader(folder: String(faviconsFolderPath))
let imagesFolder = imagesFolderURL.absoluteString
let imagesFolderPath = imagesFolder.suffix(from: imagesFolder.index(imagesFolder.startIndex, offsetBy: 7))
try! FileManager.default.createDirectory(at: imagesFolderURL, withIntermediateDirectories: true, attributes: nil)
imageDownloader = ImageDownloader(folder: String(imagesFolderPath))
authorAvatarDownloader = AuthorAvatarDownloader(imageDownloader: imageDownloader)
let tempFolder = tempDir.absoluteString
let tempFolderPath = tempFolder.suffix(from: tempFolder.index(tempFolder.startIndex, offsetBy: 7))
feedIconDownloader = FeedIconDownloader(imageDownloader: imageDownloader, folder: String(tempFolderPath))
}
private func initializeHomeScreenQuickActions() {
let unreadTitle = NSLocalizedString("First Unread", comment: "First Unread")
let unreadIcon = UIApplicationShortcutIcon(systemImageName: "arrow.down.circle")
let unreadItem = UIApplicationShortcutItem(type: "com.ranchero.NetNewsWire.FirstUnread", localizedTitle: unreadTitle, localizedSubtitle: nil, icon: unreadIcon, userInfo: nil)
let searchTitle = NSLocalizedString("Search", comment: "Search")
let searchIcon = UIApplicationShortcutIcon(systemImageName: "magnifyingglass")
let searchItem = UIApplicationShortcutItem(type: "com.ranchero.NetNewsWire.ShowSearch", localizedTitle: searchTitle, localizedSubtitle: nil, icon: searchIcon, userInfo: nil)
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let addTitle = NSLocalizedString("Add Feed", comment: "Add Feed")
let addIcon = UIApplicationShortcutIcon(systemImageName: "plus")
let addItem = UIApplicationShortcutItem(type: "com.ranchero.NetNewsWire.ShowAdd", localizedTitle: addTitle, localizedSubtitle: nil, icon: addIcon, userInfo: nil)
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UIApplication.shared.shortcutItems = [addItem, searchItem, unreadItem]
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}
}
// MARK: Background Tasks
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private extension AppDelegate {
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/// Register all background tasks.
func registerBackgroundTasks() {
// Register background feed refresh.
BGTaskScheduler.shared.register(forTaskWithIdentifier: "com.ranchero.NetNewsWire.FeedRefresh", using: nil) { (task) in
self.performBackgroundFeedRefresh(with: task as! BGAppRefreshTask)
}
}
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/// Schedules a background app refresh based on `AppDefaults.refreshInterval`.
func scheduleBackgroundFeedRefresh() {
let request = BGAppRefreshTaskRequest(identifier: "com.ranchero.NetNewsWire.FeedRefresh")
request.earliestBeginDate = Date(timeIntervalSinceNow: AppDefaults.refreshInterval.inSeconds())
do {
try BGTaskScheduler.shared.submit(request)
} catch {
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os_log(.error, log: self.log, "Could not schedule app refresh: %@", error.localizedDescription)
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}
}
/// Performs background feed refresh.
/// - Parameter task: `BGAppRefreshTask`
/// - Warning: As of Xcode 11 beta 2, when triggered from the debugger this doesn't work.
func performBackgroundFeedRefresh(with task: BGAppRefreshTask) {
scheduleBackgroundFeedRefresh() // schedule next refresh
var startingUnreadCount = 0
DispatchQueue.global(qos: .background).async { [unowned self] in
os_log("Woken to perform account refresh.", log: self.log, type: .info)
os_log("Getting unread count.", log: self.log, type: .info)
while(!AccountManager.shared.isUnreadCountsInitialized) {
os_log("Waiting for unread counts to be initialized...", log: self.log, type: .info)
sleep(1)
}
os_log(.info, log: self.log, "Got unread count: %i", self.unreadCount)
startingUnreadCount = self.unreadCount
DispatchQueue.main.async {
AccountManager.shared.refreshAll(errorHandler: ErrorHandler.log)
}
os_log("Accounts requested to begin refresh.", log: self.log, type: .info)
sleep(1)
while (!AccountManager.shared.combinedRefreshProgress.isComplete) {
os_log("Waiting for account refresh processing to complete...", log: self.log, type: .info)
sleep(1)
}
if startingUnreadCount < self.unreadCount {
os_log("Updating unread count badge, posting notification.", log: self.log, type: .info)
self.sendReceivedArticlesUserNotification(newArticleCount: self.unreadCount - startingUnreadCount)
task.setTaskCompleted(success: true)
} else {
os_log("Account refresh operation completed.", log: self.log, type: .info)
task.setTaskCompleted(success: true)
}
}
// set expiration handler
task.expirationHandler = {
os_log("Accounts refresh processing terminated for running too long.", log: self.log, type: .info)
task.setTaskCompleted(success: false)
}
}
}
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private extension AppDelegate {
func sendReceivedArticlesUserNotification(newArticleCount: Int) {
let content = UNMutableNotificationContent()
content.title = NSLocalizedString("Article Download", comment: "New Articles")
let body: String = {
if newArticleCount == 1 {
return NSLocalizedString("You have downloaded 1 new article.", comment: "Article Downloaded")
} else {
let formatString = NSLocalizedString("You have downloaded %d new articles.", comment: "Articles Downloaded")
return NSString.localizedStringWithFormat(formatString as NSString, newArticleCount) as String
}
}()
content.body = body
content.sound = UNNotificationSound.default
let request = UNNotificationRequest.init(identifier: "NewArticlesReceived", content: content, trigger: nil)
UNUserNotificationCenter.current().add(request)
}
}