49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
from cryptography.fernet import Fernet
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from django.conf import settings
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from django.db.models import OuterRef, Count, Subquery, IntegerField
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from django.db.models.functions import Coalesce
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from chat_box.models import Ignore, Message, UserRoom
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secret_key = settings.CHAT_SECRET_KEY
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fernet = Fernet(secret_key)
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def encrypt_url(creator_id, other_id):
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message = str(creator_id) + "_" + str(other_id)
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return fernet.encrypt(message.encode()).decode()
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def decrypt_url(message_encrypted):
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try:
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dec_message = fernet.decrypt(message_encrypted.encode()).decode()
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creator_id, other_id = dec_message.split("_")
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return int(creator_id), int(other_id)
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except Exception as e:
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return None, None
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def get_unread_boxes(profile):
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ignored_users = Ignore.get_ignored_users(profile)
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mess = (
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Message.objects.filter(room=OuterRef("room"), time__gte=OuterRef("last_seen"))
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.exclude(author=profile)
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.exclude(author__in=ignored_users)
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.order_by()
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.values("room")
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.annotate(unread_count=Count("pk"))
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.values("unread_count")
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)
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unread_boxes = (
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UserRoom.objects.filter(user=profile, room__isnull=False)
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.annotate(
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unread_count=Coalesce(Subquery(mess, output_field=IntegerField()), 0),
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)
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.filter(unread_count__gte=1)
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.count()
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)
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return unread_boxes
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