//
//  BiometricAuthenticationWireframe.swift
//  GME Remit
//
//  Created by InKwon Kim on 30/03/2019.
//Copyright © 2019 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit
import LocalAuthentication

class BiometricAuthenticationWireframe {
    weak var view: UIViewController!
    var completion: ((String?) -> ())?
    var information: String?
}

extension BiometricAuthenticationWireframe: BiometricAuthenticationWireframeInput {
    var storyboardName: String {return "BiometricAuthentication"}
    
    func getMainView() -> UIViewController {
        let service = BiometricAuthenticationService()
        let interactor = BiometricAuthenticationInteractor(service: service)
        let presenter = BiometricAuthenticationPresenter()
        let viewController = viewControllerFromStoryboard(of: BiometricAuthenticationViewController.self)
        
        viewController.presenter = presenter
        interactor.output = presenter
        presenter.interactor = interactor
        presenter.wireframe = self
        presenter.information = information
        presenter.view = viewController
        
        self.view = viewController
        return viewController
    }
    
    func showAuthentication() {
        let context = LAContext()
        
        var error: NSError?
        let msg = "Confirm your fingerprint or face to authenticate."
        let deviceAuth = LAPolicy.deviceOwnerAuthentication
        
        if context.canEvaluatePolicy(deviceAuth, error: &error) {
            context.evaluatePolicy(deviceAuth, localizedReason: msg, reply: { (success, err) in
                if success {
                    DispatchQueue.main.async {
                        self.completion?(nil)
                    }
                } else {
                    
                    let message: String
                    
                    if #available(iOS 11.0, *) {
                        switch err {
                        case LAError.authenticationFailed?:
                            message = "There was a problem verifying your identity."
                        case LAError.userCancel?:
                            message = "You pressed cancel."
                        case LAError.userFallback?:
                            message = "You pressed password."
                        case LAError.biometryNotAvailable?:
                            message = "Face ID/Touch ID is not available."
                        case LAError.biometryNotEnrolled?:
                            message = "Face ID/Touch ID is not set up."
                        case LAError.biometryLockout?:
                            message = "Face ID/Touch ID is locked."
                        default:
                            message = "Face ID/Touch ID may not be configured"
                        }
                    } else {
                        switch err {
                        case LAError.authenticationFailed?:
                            message = "There was a problem verifying your identity."
                        case LAError.userCancel?:
                            message = "You pressed cancel."
                        case LAError.userFallback?:
                            message = "You pressed password."
                        case LAError.touchIDNotAvailable?:
                            message = "Face ID/Touch ID is not available."
                        case LAError.touchIDNotEnrolled?:
                            message = "Face ID/Touch ID is not set up."
                        case LAError.touchIDLockout?:
                            message = "Face ID/Touch ID is locked."
                        default:
                            message = "Face ID/Touch ID may not be configured"
                        }
                        
                    }
                    self.completion?(message)
                }
            })
        } else {
            completion?(error?.localizedDescription)
        }
    }
}