withings_views.py

# pylint: disable=no-member, line-too-long

import calendar
import json

import requests

from django.conf import settings
from django.shortcuts import redirect

from django.utils import timezone
from django.views.decorators.csrf import csrf_exempt

from .models import DataPoint, install_supports_jsonfield

AUTHORIZE_URL = 'https://account.withings.com/oauth2_user/authorize2' # nosec
ACCESS_TOKEN_URL = 'https://account.withings.com/oauth2/token' # nosec

@csrf_exempt
def pdk_withings_start(request, source_id): # pylint: disable=unused-argument
    params = {
        'response_type': 'code',
        'client_id': settings.PDK_WITHINGS_CLIENT_ID,
        'state': source_id,
        'scope': ','.join(settings.PDK_WITHINGS_SCOPES),
        'redirect_uri': settings.PDK_WITHINGS_REDIRECT_URL,
    }

    return redirect(requests.Request('GET', AUTHORIZE_URL, params=params).prepare().url)


@csrf_exempt
def pdk_withings_auth(request):
    code = request.GET['code']
    source_id = request.GET['state']

    params = {
        'grant_type': 'authorization_code',
        'client_id': settings.PDK_WITHINGS_CLIENT_ID,
        'client_secret': settings.PDK_WITHINGS_SECRET,
        'code': code,
        'redirect_uri': settings.PDK_WITHINGS_REDIRECT_URL,
    }

    response = requests.post(ACCESS_TOKEN_URL, data=params, timeout=120)

    point = DataPoint(source=source_id, generator='pdk-withings-server-auth', created=timezone.now())
    point.recorded = point.created
    point.generator_identifier = point.generator
    point.server_generated = True

    payload = response.json()

    payload['passive-data-metadata'] = {
        'source': source_id,
        'generator-id': point.generator_identifier,
        'generator': point.generator,
        'timestamp': calendar.timegm(point.created.timetuple())
    }

    if install_supports_jsonfield():
        point.properties = payload
    else:
        point.properties = json.dumps(payload, indent=2)

    point.save()

    return redirect('pdk_home')