import serial
import sys
import argparse

class Const:
    _ = {
        35:"Крутилка 5",
        36:"Крутилка 2",
        32:"Крутилка 1",
        39:"Крутилка 3",
        34:"Крутилка 4",
        26:"Кнопки"
    }
    FULL = 100

class Pin:
    def __init__(self, id, initValue):
        self.id = id
        self.value = initValue
        self.name = Const._[id] if id in Const._ else None

    def updateValue(self, value):
        if self.value == value:
            return (self, 0)
        #elif abs(self.value - value) in [1,2,3,4]:
        #    return (self, 0)
        else:
            self.value = value
            return (self, value)

class SerialListener:
    ser: serial.Serial = None
    pins = {}
    def __init__(self, device = '/dev/serial0', rate = 9600):
        self.ser = serial.Serial(device, rate)

    def reInit(self):
        if self.ser:
            try:
                self.ser.close()
                self.ser.open()
            except:
                pass

    def listen(self):
        while True:
            try:
                if self.ser.in_waiting > 0:
                    data = self.ser.readline().decode().split("\n")[0].split("-")
                    pin = int(data[0])
                    value = int(data[1])
                    if pin not in self.pins:
                        self.pins[pin] = Pin(pin, value)
                    else:
                        yield self.pins[pin].updateValue(value)
            except ValueError:
                continue
            except KeyboardInterrupt:
                print("exit from main loop")
                sys.exit(0)
            except:
                self.reInit()

if __name__ == "__main__":
    listener = SerialListener()
    for pin in listener.listen():
        if pin[1] == 0:
            continue
        
        if pin[0].name != None:
            print(pin[0].name, pin[1])