mirror of
https://github.com/ae-utbm/sith.git
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ef968f3673
* Better usage of cache for group retrieval * Cache clearing on object deletion or update * replace signals by save and delete override * add is_anonymous check in is_owned_by Add in many is_owned_by(self, user) methods that user is not anonymous. Since many of those functions do db queries, this should reduce a little bit the load of the db. * Stricter usage of User.is_in_group Constrain the parameters that can be passed to the function to make sure only a str or an int can be used. Also force to explicitly specify if the group id or the group name is used. * write test and correct bugs * remove forgotten populate commands * Correct test
260 lines
7.5 KiB
Python
260 lines
7.5 KiB
Python
# -*- coding:utf-8 -*
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#
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# Copyright 2023 © AE UTBM
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# ae@utbm.fr / ae.info@utbm.fr
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#
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# This file is part of the website of the UTBM Student Association (AE UTBM),
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# https://ae.utbm.fr.
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#
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# You can find the source code of the website at https://github.com/ae-utbm/sith3
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#
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# LICENSED UNDER THE GNU GENERAL PUBLIC LICENSE VERSION 3 (GPLv3)
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# SEE : https://raw.githubusercontent.com/ae-utbm/sith3/master/LICENSE
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# OR WITHIN THE LOCAL FILE "LICENSE"
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#
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#
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from django.db import models
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from django.urls import reverse
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from django.core.cache import cache
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from django.conf import settings
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from django.utils.translation import gettext_lazy as _
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from django.utils import timezone
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from PIL import Image
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from io import BytesIO
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import os
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from core.models import SithFile, User
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from core.utils import resize_image, exif_auto_rotate
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class SASPictureManager(models.Manager):
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def get_queryset(self):
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return (
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super(SASPictureManager, self)
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.get_queryset()
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.filter(is_in_sas=True, is_folder=False)
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)
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class SASAlbumManager(models.Manager):
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def get_queryset(self):
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return (
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super(SASAlbumManager, self)
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.get_queryset()
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.filter(is_in_sas=True, is_folder=True)
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)
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class Picture(SithFile):
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class Meta:
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proxy = True
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objects = SASPictureManager()
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@property
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def is_vertical(self):
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with open(
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os.path.join(settings.MEDIA_ROOT, self.file.name).encode("utf-8"), "rb"
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) as f:
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im = Image.open(BytesIO(f.read()))
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(w, h) = im.size
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return (w / h) < 1
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def can_be_edited_by(self, user):
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perm = cache.get("%d_can_edit_pictures" % (user.id), None)
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if perm is None:
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perm = user.is_root or user.is_in_group(pk=settings.SITH_GROUP_SAS_ADMIN_ID)
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cache.set("%d_can_edit_pictures" % (user.id), perm, timeout=4)
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return perm
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def can_be_viewed_by(self, user):
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# SAS pictures are visible to old subscribers
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# Result is cached 4s for this user
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if user.is_anonymous:
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return False
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perm = cache.get("%d_can_view_pictures" % (user.id), False)
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if not perm:
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perm = user.was_subscribed
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cache.set("%d_can_view_pictures" % (user.id), perm, timeout=4)
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return (perm and self.is_moderated and self.is_in_sas) or self.can_be_edited_by(
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user
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)
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def get_download_url(self):
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return reverse("sas:download", kwargs={"picture_id": self.id})
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def get_download_compressed_url(self):
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return reverse("sas:download_compressed", kwargs={"picture_id": self.id})
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def get_download_thumb_url(self):
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return reverse("sas:download_thumb", kwargs={"picture_id": self.id})
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def get_absolute_url(self):
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return reverse("sas:picture", kwargs={"picture_id": self.id})
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def generate_thumbnails(self, overwrite=False):
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im = Image.open(BytesIO(self.file.read()))
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try:
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im = exif_auto_rotate(im)
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except:
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pass
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file = resize_image(im, max(im.size), self.mime_type.split("/")[-1])
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thumb = resize_image(im, 200, self.mime_type.split("/")[-1])
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compressed = resize_image(im, 1200, self.mime_type.split("/")[-1])
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if overwrite:
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self.file.delete()
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self.thumbnail.delete()
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self.compressed.delete()
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self.file = file
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self.file.name = self.name
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self.thumbnail = thumb
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self.thumbnail.name = self.name
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self.compressed = compressed
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self.compressed.name = self.name
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self.save()
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def rotate(self, degree):
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for attr in ["file", "compressed", "thumbnail"]:
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name = self.__getattribute__(attr).name
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with open(
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os.path.join(settings.MEDIA_ROOT, name).encode("utf-8"), "r+b"
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) as file:
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if file:
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im = Image.open(BytesIO(file.read()))
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file.seek(0)
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im = im.rotate(degree, expand=True)
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im.save(
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fp=file,
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format=self.mime_type.split("/")[-1].upper(),
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quality=90,
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optimize=True,
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progressive=True,
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)
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def get_next(self):
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if self.is_moderated:
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return (
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self.parent.children.filter(
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is_moderated=True,
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asked_for_removal=False,
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is_folder=False,
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id__gt=self.id,
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)
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.order_by("id")
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.first()
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)
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else:
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return (
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Picture.objects.filter(id__gt=self.id, is_moderated=False)
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.order_by("id")
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.first()
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)
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def get_previous(self):
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if self.is_moderated:
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return (
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self.parent.children.filter(
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is_moderated=True,
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asked_for_removal=False,
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is_folder=False,
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id__lt=self.id,
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)
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.order_by("id")
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.last()
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)
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else:
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return (
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Picture.objects.filter(id__lt=self.id, is_moderated=False)
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.order_by("-id")
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.first()
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)
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class Album(SithFile):
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class Meta:
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proxy = True
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objects = SASAlbumManager()
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@property
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def children_pictures(self):
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return Picture.objects.filter(parent=self)
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@property
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def children_albums(self):
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return Album.objects.filter(parent=self)
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def can_be_edited_by(self, user):
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return user.is_in_group(pk=settings.SITH_GROUP_SAS_ADMIN_ID)
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def can_be_viewed_by(self, user):
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# file = SithFile.objects.filter(id=self.id).first()
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return self.can_be_edited_by(user) or (
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self.is_in_sas and self.is_moderated and user.was_subscribed
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) # or user.can_view(file)
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def get_absolute_url(self):
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return reverse("sas:album", kwargs={"album_id": self.id})
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def get_download_url(self):
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return reverse("sas:album_preview", kwargs={"album_id": self.id})
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def generate_thumbnail(self):
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p = (
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self.children_pictures.order_by("?").first()
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or self.children_albums.exclude(file=None)
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.exclude(file="")
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.order_by("?")
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.first()
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)
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if p and p.file:
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im = Image.open(BytesIO(p.file.read()))
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self.file = resize_image(im, 200, "jpeg")
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self.file.name = self.name + "/thumb.jpg"
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self.save()
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def sas_notification_callback(notif):
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count = Picture.objects.filter(is_moderated=False).count()
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if count:
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notif.viewed = False
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else:
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notif.viewed = True
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notif.param = "%s" % count
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notif.date = timezone.now()
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class PeoplePictureRelation(models.Model):
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"""
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The PeoplePictureRelation class makes the connection between User and Picture
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"""
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user = models.ForeignKey(
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User,
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verbose_name=_("user"),
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related_name="pictures",
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null=False,
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blank=False,
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on_delete=models.CASCADE,
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)
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picture = models.ForeignKey(
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Picture,
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verbose_name=_("picture"),
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related_name="people",
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null=False,
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blank=False,
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on_delete=models.CASCADE,
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)
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class Meta:
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unique_together = ["user", "picture"]
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def __str__(self):
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return self.user.get_display_name() + " - " + str(self.picture)
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