//

// PasscodeLockPresenter.swift

// PasscodeLock

//

// Created by Yanko Dimitrov on 8/29/15.

// Copyright © 2015 Yanko Dimitrov. All rights reserved.

//

import UIKit

public class PasscodeLockPresenter {

private var mainWindow: UIWindow?

private lazy var passcodeLockWindow: UIWindow = {

let window = UIWindow(frame: UIScreen.mainScreen().bounds)

window.windowLevel = 0

window.makeKeyAndVisible()

return window

}()

private let passcodeConfiguration: PasscodeLockConfigurationType

private var isPasscodePresented = false

public init(mainWindow window: UIWindow?, configuration: PasscodeLockConfigurationType) {

mainWindow = window

mainWindow?.windowLevel = 1

passcodeConfiguration = configuration

}

public func presentPasscodeLock() {

guard passcodeConfiguration.repository.hasPasscode else { return }

guard !isPasscodePresented else { return }

isPasscodePresented = true

passcodeLockWindow.windowLevel = 2

let passcodeLockVC = PasscodeLockViewController(state: .EnterPasscode, configuration: passcodeConfiguration)

passcodeLockVC.dismissCompletionCallback = { [weak self] in

self?.dismissPasscodeLock()

}

passcodeLockWindow.rootViewController = passcodeLockVC

}

private func dismissPasscodeLock() {

isPasscodePresented = false

mainWindow?.windowLevel = 1

mainWindow?.makeKeyAndVisible()

UIView.animateWithDuration(

0.5,

delay: 0,

usingSpringWithDamping: 1,

initialSpringVelocity: 0,

options: [.CurveEaseInOut],

animations: { [weak self] in

self?.passcodeLockWindow.alpha = 0

},

completion: { [weak self] _ in

self?.passcodeLockWindow.windowLevel = 0

self?.passcodeLockWindow.rootViewController = nil

self?.passcodeLockWindow.alpha = 1

}

)

}

}