from datetime import timedelta
import logging

from django.db import models
from django.contrib.auth.models import User
from django.conf import settings
from django.utils import timezone

import requests


class AccessToken(models.Model):
    account = models.OneToOneField("ApiAccount", on_delete=models.CASCADE, primary_key=True)
    value = models.CharField(max_length=256, verbose_name="Withings API Access Token")
    expires = models.DateTimeField(verbose_name="Time of expiration")


class RefreshToken(models.Model):
    account = models.OneToOneField("ApiAccount", on_delete=models.CASCADE, primary_key=True)
    value = models.CharField(max_length=256, verbose_name="Withings API Refresh Token")
    expires = models.DateTimeField(verbose_name="Time of expiration")


class ApiAccount(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE, primary_key=True)
    userid = models.PositiveIntegerField(verbose_name="Withings API User ID")

    def refresh_tokens(self):
        data = {
            'action': 'requesttoken',
            'client_id': settings.WITHINGS_CONFIG['CLIENT_ID'],
            'client_secret': settings.WITHINGS_CONFIG['CLIENT_SECRET'],
            'grant_type': 'refresh_token',
            'refresh_token': self.refreshtoken.value
        }
        response = requests.post(
            url=settings.WITHINGS_CONFIG['ENDPOINT_URL_OAUTH2'],
            json=data
        )

        if response is not None:
            response.raise_for_status()
        response_data = response.json()

        now = timezone.now()
        self.accesstoken.value = response_data['body']['access_token']
        self.accesstoken.expires = now + timedelta(seconds=response_data['body']['expires_in'])
        self.refreshtoken.value = response_data['body']['refresh_token']
        self.refreshtoken.expires = now + timedelta(days=365)
        self.accesstoken.save()
        self.refreshtoken.save()