rbg.py

from flask import Flask, request, jsonify
import RPi.GPIO as GPIO

app = Flask(__name__)
BLUE = 12
RED = 13
GREEN = 18

base_response = {
                 'speech':"Abra Ka Dabra,{color} LED glowing",
                 'displayText' : "Abra Kaa Daabra, {color} LED glowing",
                 'source' : 'Manual'}


@app.route('/',methods=['GET','POST'])
def index():
    if request.method == 'GET':
        text = """WELCOME to RBG<br>
    	/red -> red LED<br>
    	/blue -> blue LED<br>
    	/green -> green LED<br>
    	/clear -> clear all<br>
    	"""
    	return text
    else:
        req_body = request.get_json()
        color = req_body['result']['resolvedQuery']
	if color == 'red':
	    red()
        if color == 'green':
            green()
        if color == 'blue':
            blue()
        response = base_response.copy()
        response['speech'] = response['speech'].format(color=color)
        response['displayText'] = response['displayText'].format(color=color)
        return jsonify(response)
       

@app.route('/red')
def red():
    GPIO.output(BLUE,GPIO.LOW)
    GPIO.output(RED,GPIO.HIGH)   
    GPIO.output(GREEN,GPIO.LOW)
    return "RED"

@app.route('/green')
def green():
    GPIO.output(BLUE,GPIO.LOW)
    GPIO.output(RED,GPIO.LOW)   
    GPIO.output(GREEN,GPIO.HIGH)
    return "GREEN"

@app.route('/blue')
def blue():
    GPIO.output(BLUE,GPIO.HIGH)
    GPIO.output(RED,GPIO.LOW)	
    GPIO.output(GREEN,GPIO.LOW)
    return "BLUE"

@app.route('/clear')
def clear():
    GPIO.output(BLUE,GPIO.LOW)
    GPIO.output(RED,GPIO.LOW)
    GPIO.output(GREEN,GPIO.LOW)
    return "Cleared"

if __name__ == '__main__':
    GPIO.setmode(GPIO.BCM)
    GPIO.setup(BLUE,GPIO.OUT)
    GPIO.setup(RED,GPIO.OUT)
    GPIO.setup(GREEN,GPIO.OUT)
    app.run(host='0.0.0.0',port=5000,debug=True)
    GPIO.cleanup()