EventHelper.swift

/*
* Copyright (c) 2020, Nordic Semiconductor
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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import Foundation
@testable import nRF_Blinky

class Sim {

    static func post(_ notification: Notification) {
        NotificationCenter.default.post(notification)
    }

    static func dispose(_ observer: NSObjectProtocol) {
        NotificationCenter.default.removeObserver(observer)
    }

    private static func on(_ name: Notification.Name, do action: @escaping (Notification) -> ()) -> NSObjectProtocol {
        return NotificationCenter.default.addObserver(forName: name, object: nil, queue: nil, using: action)
    }

    static func onBlinkyDiscovery(do action: @escaping (BlinkyPeripheral) -> ()) {
        var observer: NSObjectProtocol?
        observer = on(.newPeripheral) { notification in
            if let userInfo = notification.userInfo,
               let blinky = userInfo["blinky"] as? BlinkyPeripheral {
                action(blinky)
            }
            dispose(observer!)
        }
    }

}