mybuddy/babybuddy/models.py

126 lines
4.1 KiB
Python

# -*- coding: utf-8 -*-
import pytz
import json
import io
from django.conf import settings
from django.contrib.auth.models import User
from django.db import models
from django.db.models.signals import post_save
from django.dispatch import receiver
from django.utils import timezone
from django.utils.text import format_lazy
from django.utils.translation import gettext_lazy as _
from rest_framework.authtoken.models import Token
import qrcode
class Settings(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
dashboard_refresh_rate = models.DurationField(
verbose_name=_("Refresh rate"),
help_text=_(
"If supported by browser, the dashboard will only refresh "
"when visible, and also when receiving focus."
),
blank=True,
null=True,
default=timezone.timedelta(minutes=1),
choices=[
(None, _("disabled")),
(timezone.timedelta(minutes=1), _("1 min.")),
(timezone.timedelta(minutes=2), _("2 min.")),
(timezone.timedelta(minutes=3), _("3 min.")),
(timezone.timedelta(minutes=4), _("4 min.")),
(timezone.timedelta(minutes=5), _("5 min.")),
(timezone.timedelta(minutes=10), _("10 min.")),
(timezone.timedelta(minutes=15), _("15 min.")),
(timezone.timedelta(minutes=30), _("30 min.")),
],
)
dashboard_hide_empty = models.BooleanField(
verbose_name=_("Hide Empty Dashboard Cards"), default=False, editable=True
)
dashboard_hide_age = models.DurationField(
verbose_name=_("Hide data older than"),
help_text=_(
"This setting controls which data will be shown " "in the dashboard."
),
blank=True,
null=True,
default=None,
choices=[
(None, _("show all data")),
(timezone.timedelta(days=1), _("1 day")),
(timezone.timedelta(days=2), _("2 days")),
(timezone.timedelta(days=3), _("3 days")),
(timezone.timedelta(weeks=1), _("1 week")),
(timezone.timedelta(weeks=4), _("4 weeks")),
],
)
language = models.CharField(
choices=settings.LANGUAGES,
default=settings.LANGUAGE_CODE,
max_length=255,
verbose_name=_("Language"),
)
timezone = models.CharField(
choices=tuple(zip(pytz.common_timezones, pytz.common_timezones)),
default=timezone.get_default_timezone_name(),
max_length=100,
verbose_name=_("Timezone"),
)
def __str__(self):
return str(format_lazy(_("{user}'s Settings"), user=self.user))
def api_key(self, reset=False):
"""
Get or create an API key for the associated user.
:param reset: If True, delete the existing key and create a new one.
:return: The user's API key.
"""
if reset:
Token.objects.get(user=self.user).delete()
return Token.objects.get_or_create(user=self.user)[0]
def generate_login_qr_code_png(self, page_root: str) -> bytes:
json_data = {
"url": page_root,
"api_key": str(self.api_key()),
}
qr_code_data = r"BABYBUDDY-LOGIN:" + json.dumps(json_data)
qr = qrcode.QRCode(border=1, box_size=5)
qr.add_data(qr_code_data)
qr.make(fit=True)
image = qr.make_image()
bytesio = io.BytesIO()
image.save(bytesio, format="png")
return bytesio.getbuffer()
@property
def dashboard_refresh_rate_milliseconds(self):
"""
Convert seconds to milliseconds to be used in a Javascript setInterval
function call.
:return: the refresh rate in milliseconds or None.
"""
if self.dashboard_refresh_rate:
return self.dashboard_refresh_rate.seconds * 1000
return None
@receiver(post_save, sender=User)
def create_user_settings(sender, instance, created, **kwargs):
if created:
Settings.objects.create(user=instance)
@receiver(post_save, sender=User)
def save_user_settings(sender, instance, **kwargs):
instance.settings.save()