#Authors:   Oulis Evangelos, Oulis Nikolaos, Drosos Katsibras
#===================================================================
#!/usr/bin/env python

import json
import requests
import serial


server_ip = "192.168.1.13"#"iot-smart-parking.herokuapp.com"
server_port = "8080"#"443"
API_ENDPOINT = 'http://' + server_ip + ':' + server_port + '/'

try:
	ser = serial.Serial(
		port='/dev/ttyACM0',
		baudrate = 9600,
		parity=serial.PARITY_NONE,
		stopbits=serial.STOPBITS_ONE,
		bytesize=serial.EIGHTBITS,
		timeout=1
	)
	
	c = requests.get(url=API_ENDPOINT, params = {})
	doc = c.json()

	parking = None 
	for park in doc:
		if park['status'] == True:
			parking = park	#{"no": park['no'], "status": park['status']}
			break
	
	print ("Free parking is Number: " + str(parking['no']))
	ser.flush()
	ser.write(str.encode(str(parking['no'])))
#	ser.write("b'" + parking['no'] + "'")
	ser.flush()
except (NameError, TypeError) as e:
	print ("No free parking" + str(e))
except requests.exceptions.ConnectionError:
	print("No Internet access" + str(e))