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         nc.addObserver(forName: NSWorkspace.didWakeNotification, object: nil, queue: nil, using: notify)
  32
  33         notifyIfNeeded(nil)
  34     }
  35
  36     private func notify(_ notification: Notification) {
  37
  38         notifyIfNeeded(nil)
  39     }
  40
  41     @objc private func notifyIfNeeded(_ timer: Timer?) {
  42
  43         let now = Date(timeIntervalSinceNow: 0.0)
  44         var currentDay = Calendar.current.dateComponents([.era, .year, .month, .day], from: now)
  45         currentDay.hour = hour
  46         currentDay.minute = minutes
  47
  48         if let notifyDate = Calendar.current.date(from: currentDay),
  49             now.compare(notifyDate) == .orderedDescending {
  50
  51             currentDay.day? += 1
  52             NotificationCenter.default.post(name: .Periodic, object: self)
  53         }
  54
  55         timer?.invalidate()
  56
  57         guard let nextNotifyDate = Calendar.current.date(from: currentDay) else {
  58
  59             return Logger.shared.log("Can not create time of notify")
  60         }
  61
  62         Timer.scheduledTimer(timeInterval: nextNotifyDate.timeIntervalSinceNow + 0.1,
  63                              target: self,
  64                              selector: #selector(PeriodicNotifier.notifyIfNeeded(_:)),
  65                              userInfo: nil,
  66                              repeats: false)
  67     }
  68 }