Automatic Irrigation System

import water

if __name__ == "__main__":
    water.auto_water()

# External module imp
import RPi.GPIO as GPIO
import datetime
import time

init = False

GPIO.setmode(GPIO.BOARD) # Pin-numbering scheme

def get_last_watered():
    try:
        f = open("last_watered.txt", "r")
        return f.readline()
    except:
        return "NEVER!"
      
def get_status(pin = 8):
    GPIO.setup(pin, GPIO.IN) 
    return GPIO.input(pin)

def init_output(pin):
    GPIO.setup(pin, GPIO.OUT)
    GPIO.output(pin, GPIO.LOW)
    GPIO.output(pin, GPIO.HIGH)
    
def auto_water(delay = 2, pump_pin = 7, water_sensor_pin = 8):
    consecutive_water_count = 0
    init_output(pump_pin)
    print("Here we go! Press CTRL+C to exit")
    try:
        while 1 and consecutive_water_count < 10:
            time.sleep(delay)
            wet = get_status(pin = water_sensor_pin) == 1
            if not wet:
                if consecutive_water_count ==0:
                    pump_on(pump_pin, 1)
           
            else:
                consecutive_water_count = 0
    except KeyboardInterrupt: #CTRL+C makes exit clean:
        GPIO.cleanup() # cleanup GPIs

def pump_on(pump_pin = 7, delay = 2):
    init_output(pump_pin)
    f = open("last_watered.txt", "w")
    f.write("Last watered {}".format(datetime.datetime.now()))
    f.close()
    GPIO.output(pump_pin, GPIO.LOW)
    time.sleep(1)
    GPIO.output(pump_pin, GPIO.HIGH)
    

from flask import Flask, render_template, redirect, url_for
import psutil
import datetime
import water
import os

app = Flask(__name__)

def template(title = "HELLO!", text = ""):
    now = datetime.datetime.now()
    timeString = now
    templateDate = {
        'title' : title,
        'time' : timeString,
        'text' : text
        }
    return templateDate

@app.route("/")
def hello():
    templateData = template()
    return render_template('main.html', **templateData)

@app.route("/last_watered")
def check_last_watered():
    templateData = template(text = water.get_last_watered())
    return render_template('main.html', **templateData)

@app.route("/sensor")
def action():
    status = water.get_status()
    message = ""
    if (status == 0):
        message = "Water me please!"
    else:
        message = "I'm a happy plant"

    templateData = template(text = message)
    return render_template('main.html', **templateData)

@app.route("/water")
def action2():
    water.pump_on()
    templateData = template(text = "Watered Once")
    return render_template('main.html', **templateData)

@app.route("/auto/water/<toggle>")
def auto_water(toggle):
    running = False
    if toggle == "ON":
        templateData = template(text = "Auto Watering On")
        for process in psutil.process_iter():
            try:
                if process.cmdline()[1] == 'auto_water.py':
                    templateData = template(text = "Already running")
                    running = True
            except:
                pass
        if not running:
            os.system("python3 auto_water.py&") 
    else:
        templateData = template(text = "Auto Watering Off")
        os.system("pkill -f water.py")

    return render_template('main.html', **templateData)

if __name__ == "__main__":
    app.run(host='0.0.0.0', port=82, debug=True)