import machine


class WaterSensor:

    def __init__(self, pin):
        self.waterSensor = machine.ADC(pin)
        self.reading = self.waterSensor.read_u16()
        self.threshold = 2000

    def takeReading(self):
        self.reading = self.waterSensor.read_u16()

    def isWaterPresent(self):
        return self.reading > self.threshold

    def waterStatus(self):
        return 'Present' if self.isWaterPresent() else 'Absent'