import board
import digitalio
import time
import usb_hid
from adafruit_hid.consumer_control_code import ConsumerControlCode
from adafruit_hid.consumer_control import ConsumerControl
from adafruit_hid.mouse import Mouse

clkPin = digitalio.DigitalInOut(board.GP2)
dtPin = digitalio.DigitalInOut(board.GP1)
dtPin.direction= digitalio.Direction.INPUT
clkPin.direction = digitalio.Direction.INPUT
clkPin.pull = digitalio.Pull.UP
dtPin.pull = digitalio.Pull.UP

global buttonPin
buttonPin = digitalio.DigitalInOut(board.GP15)
buttonPin.direction = digitalio.Direction.INPUT
buttonPin.pull = digitalio.Pull.UP

global consumer_control
consumer_control = ConsumerControl(usb_hid.devices)

global mouse
mouse = Mouse(usb_hid.devices)

global mode
mode = 0
global previousValue
previousValue = True

#volume controller
def control_volumen(pinStatus):
    if pinStatus == True:
        print('Volumen down')
        consumer_control.send(ConsumerControlCode.VOLUME_DECREMENT)
    else:
        print('Volumen up')
        consumer_control.send(ConsumerControlCode.VOLUME_INCREMENT)

def mute_volumen():
    consumer_control.send(ConsumerControlCode.MUTE)
    print('Mute')



#quickscroll
def scroll_up_down(pinStatus):
    if pinStatus == False:
        print('Scroll down')
        mouse.move(wheel=3)
    else:
        print('Scroll up')
        mouse.move(wheel=-3)

def middle_mouse_button():
    mouse.click(Mouse.MIDDLE_BUTTON)

#media control
def previous_next_track(pinStatus):
    if pinStatus == True:
        print('Previous track')
        consumer_control.send(ConsumerControlCode.SCAN_PREVIOUS_TRACK)
    else:
        print('Next track')
        consumer_control.send(ConsumerControlCode.SCAN_NEXT_TRACK)

def play_pause():
    consumer_control.send(ConsumerControlCode.PLAY_PAUSE)
    print('Play/Pause')


while True:
    if buttonPin.value == False:
        if mode == 0:
            mute_volumen()
        elif mode == 1:
            play_pause()
        elif mode == 2:
            middle_mouse_button()
        else:
            mode = 0
            mute_volumen()
        print('Button pressed')
        time.sleep(0.3)
        if buttonPin.value == False:
            if mode == 0:
                mute_volumen()
                mode += 1
            elif mode == 1:
                play_pause()
                mode += 1
            elif mode == 2:
                middle_mouse_button()
                mode += 1
            else:
                mode = 0
                mute_volumen()
            print("changed mode: " + str(mode))
            time.sleep(1)
    else:
        if previousValue != clkPin.value:
            if clkPin.value == False:
                if mode == 0:
                    control_volumen(dtPin.value)
                elif mode == 1:
                    previous_next_track(dtPin.value)
                elif mode == 2:
                    scroll_up_down(dtPin.value)
                else:
                    mode = 0
                    control_volumen(dtPin.value)
            previousValue = clkPin.value