MTMR/MTMR/HapticFeedback.swift

//
//  HapticFeedback.swift
//  MTMR
//
//  Created by Anton Palgunov on 09/04/2018.
//  Copyright © 2018 Anton Palgunov. All rights reserved.
//

import IOKit

class HapticFeedback {
    private var actuatorRef: CFTypeRef?
    private var deviceID: UInt64 = 0x200000001000000
    private var error: IOReturn = 0

    // Don't know how to do strong is enum one of
    // 1 like back Click
    // 2 like Click
    // 3 week
    // 4 medium
    // 5 week medium
    // 6 strong
    // 15 nothing
    // 16 nothing
    // you can get a plist `otool -s __TEXT __tpad_act_plist /System/Library/PrivateFrameworks/MultitouchSupport.framework/Versions/Current/MultitouchSupport|tail -n +3|awk -F'\t' '{print $2}'|xxd -r -p`

    func tap(strong:Int32) -> Void {
        let actuatorRef = MTActuatorCreateFromDeviceID(deviceID).takeRetainedValue()

        // TODO: Need to fix warning
        guard actuatorRef != nil else {
            print("guard actuatorRef == nil")
            return
        }

        error = MTActuatorOpen(actuatorRef)
        guard error == kIOReturnSuccess else {
            print("guard MTActuatorOpen")
            return
        }

        error = MTActuatorActuate(actuatorRef, strong, 0, 0.0, 0.0)
        guard error == kIOReturnSuccess else {
            print("guard MTActuatorActuate")
            return
        }

        error = MTActuatorClose(actuatorRef)
        guard error == kIOReturnSuccess else {
            print("guard MTActuatorClose")
            return
        }

        return
    }
}