KCD/PeriodicNotifier.swift

   1 //
   2 //  PeriodicNotifier.swift
   3 //  KCD
   4 //
   5 //  Created by Hori,Masaki on 2017/01/03.
   6 //  Copyright © 2017年 Hori,Masaki. All rights reserved.
   7 //
   8
   9 import Cocoa
  10
  11 extension Notification.Name {
  12
  13     static let Periodic = Notification.Name("com.masakih.KCD.Notification.Periodic")
  14 }
  15
  16 final class PeriodicNotifier: NSObject {
  17
  18     private let hour: Int
  19     private let minutes: Int
  20
  21     init(hour: Int, minutes: Int) {
  22
  23         self.hour = hour
  24         self.minutes = minutes
  25
  26         super.init()
  27
  28         let nc = NotificationCenter.default
  29         nc.addObserver(forName: .NSSystemTimeZoneDidChange, object: nil, queue: nil, using: notify)
  30         nc.addObserver(forName: .NSSystemClockDidChange, object: nil, queue: nil, using: notify)
  31         NSWorkspace.shared.notificationCenter
  32             .addObserver(forName: NSWorkspace.didWakeNotification, object: nil, queue: nil, using: notify)
  33     }
  34
  35     private func notify(_ notification: Notification) {
  36
  37         notifyIfNeeded(nil)
  38     }
  39
  40     @objc private func notifyIfNeeded(_ timer: Timer?) {
  41
  42         let now = Date(timeIntervalSinceNow: 0.0)
  43         var currentDay = Calendar.current.dateComponents([.era, .year, .month, .day], from: now)
  44         currentDay.hour = hour
  45         currentDay.minute = minutes
  46
  47         if let notifyDate = Calendar.current.date(from: currentDay),
  48             now.compare(notifyDate) == .orderedDescending {
  49
  50             currentDay.day? += 1
  51             NotificationCenter.default.post(name: .Periodic, object: self)
  52         }
  53
  54         timer?.invalidate()
  55
  56         guard let nextNotifyDate = Calendar.current.date(from: currentDay) else {
  57
  58             Logger.shared.log("Can not create time of notify")
  59
  60             return
  61         }
  62
  63         Timer.scheduledTimer(timeInterval: nextNotifyDate.timeIntervalSinceNow + 0.1,
  64                              target: self,
  65                              selector: #selector(PeriodicNotifier.notifyIfNeeded(_:)),
  66                              userInfo: nil,
  67                              repeats: false)
  68     }
  69 }