import cgi
import datetime
import configparser

import pymysql

def getDatabase(path = "config.cfg"):
 config = configparser.RawConfigParser()
 config.read(path)

 host = config.get("Database", "host")
 user = config.get("Database", "user")
 pwd = config.get("Database", "pass")
 name = config.get("Database", "name")

 conn = pymysql.connect(host, user, pwd, name)
 cur = conn.cursor()

 return conn, cur

def application(env, re):
 if env["REQUEST_METHOD"] == "POST":
  args = cgi.parse_qs(env['wsgi.input'].readline().decode(), True)
 elif env["REQUEST_METHOD"] == "GET":
  args = cgi.parse_qs(env['QUERY_STRING'], True)
 else:
  re("405 Method Not Allowed", [])
  return

 if env["PATH_INFO"] == "/endpoint":
  try:
   device = args["device"][0]
  except:
   re("400 Bad Request", [])
   yield "<h1>400 Bad Request</h1>".encode()
   yield "device is required.".encode()

  try:
   latitude = float(args["lat"][0].replace(",", "."))
   longitude = float(args["lon"][0].replace(",", "."))
  except Exception as e:
   re("400 Bad Request", [])
   yield "<h1>400 Bad Request</h1>".encode()
   yield "lat and lon are required.".encode()
   return

  try:
   altitude = float(args["alt"][0].replace(",", "."))
  except:
   altitude = None

  try:
   timestamp = datetime.datetime.fromtimestamp(float(args["t"][0]) / 1000)
  except:
   timestamp = datetime.datetime.now()

  timestr = timestamp.strftime('%Y-%m-%d %H:%M:%S')

  conn, cur = getDatabase()
  sql = "INSERT INTO tracker(ts, device, lat, lon, alt) VALUES (%s, %s, %s, %s, %s);"
  
  cur.execute(sql, (timestr, device, str(latitude), str(longitude), str(altitude) if altitude != None else None))
  conn.commit()