//
//  AppDelegate.swift
//  eqMac
//
//  Created by Roman Kisil on 27/11/2017.
//  Copyright © 2017 Roman Kisil. All rights reserved.
//

import Cocoa
import SwiftyJSON
import ServiceManagement
import Sparkle
import EmitterKit

@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate, SUUpdaterDelegate {
  var updater = SUUpdater(for: Bundle.main)!
  var updateProcessed = EmitterKit.Event<Void>()
  var willBeDownloadingUpdate = false
  
  func applicationDidFinishLaunching(_ aNotification: Notification) {
    NSApplication.shared.windows.first?.close()
    updater.delegate = self
    updateProcessed.once { _ in
      Application.start()
    }
    updater.checkForUpdatesInBackground()
  }
  
  func applicationWillTerminate(_ aNotification: Notification) {
    Application.quit()
  }
  
  func applicationShouldHandleReopen(_ sender: NSApplication, hasVisibleWindows flag: Bool) -> Bool {
    UI.toggle()
    return true
  }
  
  func applicationWillBecomeActive(_ notification: Notification) {
    
  }
  
  func applicationDidBecomeActive(_ notification: Notification) {
    
  }
  
  func updaterDidNotFindUpdate(_ updater: SUUpdater) {
    updateProcessed.emit()
  }
  
  func updater(_ updater: SUUpdater, userDidSkipThisVersion item: SUAppcastItem) {
    updateProcessed.emit()
  }
  
  func updater(_ updater: SUUpdater, didCancelInstallUpdateOnQuit item: SUAppcastItem) {
    updateProcessed.emit()
  }
  
  func updater(_ updater: SUUpdater, willDownloadUpdate item: SUAppcastItem, with request: NSMutableURLRequest) {
    willBeDownloadingUpdate = true
  }
  
  func updater(_ updater: SUUpdater, didDismissUpdateAlertPermanently permanently: Bool, for item: SUAppcastItem) {
    Utilities.delay(500, completion: {
      if !self.willBeDownloadingUpdate {
        self.updateProcessed.emit()
      }
    })
  }
  
  func userDidCancelDownload(_ updater: SUUpdater) {
    updateProcessed.emit()
  }
  
  func updater(_ updater: SUUpdater, didAbortWithError error: Error) {
    updateProcessed.emit()
  }
  
  func updater(_ updater: SUUpdater, failedToDownloadUpdate item: SUAppcastItem, error: Error) {
    updateProcessed.emit()
  }
}