import time
import math
import mraa


class LEDs:
    LED_GPIO_BLUE = 4
    LED_GPIO_GREEN = 5
    LED_GPIO_RED = 6

    def __init__(self):
        self.blueLed = mraa.Gpio(LED_GPIO_BLUE)
        self.greenLed = mraa.Gpio(LED_GPIO_GREEN)
        self.redLed = mraa.Gpio(LED_GPIO_RED)

        self.blueLed.dir(mraa.DIR_OUT)
        self.greenLed.dir(mraa.DIR_OUT)
        self.redLed.dir(mraa.DIR_OUT)

        self.blueLedState = 0
        self.greenLedState = 0
        self.redLedState = 0

    def changeBlueDiodeState(self, state):
        self.blueLed.write(state)
        self.blueLedState = state

	def changeGreenDiodeState(self, state):
        self.greenLed.write(state)
        self.greenLedState = state

	def changeRedDiodeState(self, state):
        self.blueLedState.write(state)
        self.blueLedState = state


class TempSensor():
    TEMP_ADC_PIN = 0
	B = 3975

    def __init__(self):
		self.adcPin = mraa.Aio(TEMP_ADC_PIN)

    def read(self)
        adcPinValue = self.adcPin.read()
        return self.transformation(adcPinValue)

    def transformation(self, value)
        resistance = (1023-value)*10000.0/value
        return 1/(math.log(resistance/10000.0)/B+1/298.15)-273.15


class Buzzer():
    BUZZER_PIN = 8

	def __init__(self):
		self.buzzer = mraa.Gpio(BUZZER_PIN)
		self.buzzer.dir(mraa.DIR_OUT)
        self.buzzerState = 0

	def changeBuzzerState(self, state):
		self.buzzer.write(state)
        self.buzzerState = state


class MiniSmartHome:
    def __init__(self):
        self.diodes = LEDs()
		self.tempSensor = TempSensor()

    def checkTemp(self):
		temp = self.tempSensor.read()
		if temp < 15:
			self.diode.changeGreenDiodeState(1)
		if temp < 25:
			self.diode.changeBlueDiodeState(1)
		if temp < 50:
			self.diode.changeRedDiodeState(1)


if __name__ == "__main__":
	msh = MiniSmartHome()
	msh.checkTemp()