import RPi.GPIO as GPIO
from MCP3008 import MCP3008
import time

##################################################################
##################### CUSTOMIZEABLE SETTINGS #####################
##################################################################
SETTINGS = {
    "PLANTS": [
        {
            "NAME":                 "Tomaten",
            "MOISTURE_CHANNELS":    [1, 2],     # of MCP3008
            "MOISTURE_THRESHOLD":   50,         # if the average analog value of all sensors is above of this threshold, the Pump will turn on
            "WATER_PUMP_GPIO":      23,         # GPIO Number (BCM) for the Relais
            "WATERING_TIME":        10,         # Seconds, how long the pump should be turned on
        },
    ]
}
##################################################################
################# END OF CUSTOMIZEABLE SETTINGS ##################
##################################################################


def wateringPlants():
    # read moisture
    adc = MCP3008()
    for plantObject in SETTINGS["PLANTS"]:
        value = 0
        for ch in plantObject["MOISTURE_CHANNELS"]:
            # read 10 times to avoid measuring errors
            v = 0
            for i in range(10):
                v += adc.read( channel = ch )
            v /= 1.0
            value += v

        value /= float(len(plantObject["MOISTURE_CHANNELS"]))

        if value > plantObject["MOISTURE_THRESHOLD"]:
            # turn pump on for some seconds
            GPIO.setup(plantObject["WATER_PUMP_GPIO"], GPIO.OUT)
            GPIO.output(plantObject["WATER_PUMP_GPIO"], GPIO.HIGH)
            time.sleep(plantObject["WATERING_TIME"])
            GPIO.output(plantObject["WATER_PUMP_GPIO"], GPIO.LOW)

if __name__ == '__main__':
    try:
        GPIO.setwarnings(False)
        GPIO.setmode(GPIO.BCM)

        # execute functions
        checkLight()
        wateringPlants()
        checkWindow()
    except:
        GPIO.cleanup()