"""
IoT based automated water regulation system for fish farming 

Main file IoT fish Pond
Date 28/11/2023
version: 1.0 
*********Sensors********************
OLED  display 
ph sensor 
ds18x20.py  -->     temperature sensor
water level sensor 
****** Actuator ********************
4 channel relay  -> valves 1,2,3 and pump 4 (220V)

**** PIN configuration  *****

OLED_SDA-> Pin(0)
OLED_SCL-> Pin(1)
Relay_1 ->  Pin(2)
Relay_2 ->  Pin(3)
Relay_3 ->  Pin(4)
Relay_4 ->  Pin(5)

"""

# import your library
from machine import Pin, I2C
import time 


from ssd1306 import SSD1306_I2C  # OLED 
import onewire                   # Temperature sensor
import ds18x20                   # Temperature sensor

# connect to Wi-Fi 


# connect to MQTT 


# configure GPIO pins OLED 
i2c = I2C(0,sda=Pin(0), scl=Pin(1), freq=400000) # Initialize I2C communication

# Initialize OLED display
oled = SSD1306_I2C(128, 64, i2c)

# display the following info on the OLED
oled.fill(0)  # Clear the OLED display 
oled.text(" IoT Fish Pond", 0, 0)
oled.text(" Supervised by:",5, 10)
oled.text("Dr. Stella O. ",5, 20)
oled.text(" Designed by:", 7, 30)
oled.text(" Peculiar .C", 5, 40)
oled.text("  Blessing .O", 5, 50)
oled.show()

time.sleep(5) # Sleep for 5 seconds
oled.fill(0)  # Clear the display
oled.show()

# configure GPIO pins for the 4 channel Relay

valve_1 = Pin(2, Pin.OUT) # control valve 1 
valve_2 = Pin(3, Pin.OUT) # control valve 2
valve_3 = Pin(4, Pin.OUT) # control valve 3
pump =    Pin(5, Pin.OUT) # control pump
water_level_tank = Pin(20, Pin.IN) # tank water level sensor  
water_level_pond = Pin(21, Pin.IN) # pond water level sensor


# configure GPIO pin for temperature sensor
temp_pin = Pin(7) 
# Create a OneWire object and a DS18X20 object
ow = onewire.OneWire(temp_pin)
temp_sensor = ds18x20.DS18X20(ow)


# configure GPIO pin for pH sensor 



# initialize paramters 
oled_msg = " IoT Fish Pond"
tank_level = 1
pond_level = 1
pH_value = 1
temp = 20 
valve = [1,2,3 ] 
#pump = 0


# function to read temperature sensor
def read_temperature():
    pass

# function to read PH sensor 
def read_pH():
    pass


# function to read water level sensor 

def read_water_level(pin):
  pass

# function to on relay 
def on_relay(pin):
    pin.value(1)

# function to off relay

def off_relay(pin):
    pin.value(0)

# function to off relay 
def display_default(tank_level, pond_level, pH_value, temp, valve):
  #oled_msg = " IoT Fish Pond"
  oled.text(oled_msg, 0, 0)
  oled.text(f"Tank Level:   {tank_level}",0,10 )
  oled.text(f"Pound Level:  {pond_level}",0,20 )
  oled.text(f"pH_value:     {pH_value}",0,30 )
  oled.text(f"Temp_value:   {temp}",0,40 )
  oled.text(f"Value: {valve}",0,50 )
  oled.show()


while True:
    #oled_msg = " IoT Fish Pond"
    #tank_level = 1
    pond_level = 1
    pH_value = 1
    temp = 20 
    valve = [1,2,3 ] 
    display_default(tank_level, pond_level, pH_value, temp, valve)

# Check tank level and control pump
   
def check_water_tank():
    if tank_level < 1.5:
        pump.on()
        time.sleep(1)
    if tank_level > 3:
        pump.off()
    tank_level = tank_level+0.1
    print(tank_level)
    
def check_pond_water():
    # check pond level and control pump
    read_water_level()
    if pond_level < 1.5: # low level
        off_relay(pump)
    


def check_pond_condition():
    read_temperature()
    read_pH()