import hashlib
import io
import json
import os

from django.core.files.storage import default_storage

import googlemaps


_client = googlemaps.Client(key=os.environ.get("GOOGLE_GEOCODING_API_KEY"))


class Client:
    def geocode(self, address):
        filename = hashlib.sha1(address.encode("utf-8")).hexdigest()
        filepath = f".geocodecache/{filename}"
        if default_storage.exists(filepath):
            fp = default_storage.open(filepath)
            return json.load(fp)

        resp = _client.geocode(address)
        fp = io.StringIO()
        json.dump(resp, fp)
        default_storage.save(filepath, fp)
        return resp