import time
import serial
import urllib.request
import json

fake_serial_port = False
PORT = '/dev/ttyACM0'

serialPort = serial.Serial()
try:
    serialPort = serial.Serial(
            port=PORT,
            baudrate=9600,
            parity=serial.PARITY_ODD,
            stopbits=serial.STOPBITS_TWO,
            bytesize=serial.SEVENBITS
        )
except:
    fake_serial_port = True

def post_data(text):
    print("Received data: %s" % text)
    body = {'temperature' : [text]}
    myurl = "http://127.0.0.1:5000/postjson"
    req = urllib.request.Request(myurl)
    req.add_header('Content-Type', 'application/json; charset=utf-8')
    jsondata = json.dumps(body)
    jsondataasbytes = jsondata.encode('utf-8')   # needs to be bytes
    req.add_header('Content-Length', len(jsondataasbytes))
    print (jsondataasbytes)
    response = urllib.request.urlopen(req, jsondataasbytes)
    return

if __name__ == "__main__":
    if serialPort.isOpen():
        print("Serial is opened")
    else:
        print("Fake serial port is used")
        fake_serial_port = True

    if fake_serial_port:
        while (True):
            post_data("20.0")
            time.sleep(10)

    while (True):
        bytesToRead = serialPort.inWaiting()
        if bytesToRead > 0:
            data = serialPort.read(bytesToRead)
            text = data.decode().strip()
            post_data(text)
        time.sleep(0.1)