import tkinter
import math
import ssl
from urllib.request import urlopen, urlretrieve
from urllib.parse import urlencode, quote_plus
import json

# Put your API key between the quotes in the string below
GOOGLEAPIKEY = "YOUR-API-KEY-HERE"



# Given a string representing a location, return 2-element tuple
# (latitude, longitude) for that location 
#
# See https://developers.google.com/maps/documentation/geocoding/
# for details about Google's geocoding API
#
def geocodeAddress(addressString):
   global geoURL
   global stringResultFromGoogle
   global jsonResult
   urlbase = "https://maps.googleapis.com/maps/api/geocode/json?address="
   geoURL = urlbase + quote_plus(addressString)
   geoURL = geoURL + "&key=" + GOOGLEAPIKEY

   # required (non-secure) security stuff for use of urlopen
   ctx = ssl.create_default_context()
   ctx.check_hostname = False
   ctx.verify_mode = ssl.CERT_NONE
   
   stringResultFromGoogle = urlopen(geoURL, context=ctx).read().decode('utf8')
   jsonResult = json.loads(stringResultFromGoogle)
   if (jsonResult['status'] != "OK"):
      print("Status returned from Google geocoder *not* OK: {}".format(jsonResult['status']))
      result = (0.0, 0.0) # this prevents crash in retrieveMapFromGoogle - yields maps with lat/lon center at 0.0, 0.0
   else:
      loc = jsonResult['results'][0]['geometry']['location']
      result = (float(loc['lat']),float(loc['lng']))
   return result