NDOJ/chat_box/views.py
2021-11-20 22:23:03 -06:00

417 lines
No EOL
14 KiB
Python

from django.utils.translation import gettext as _
from django.views.generic import ListView
from django.http import HttpResponse, JsonResponse, HttpResponseBadRequest, HttpResponsePermanentRedirect, HttpResponseRedirect
from django.core.paginator import Paginator
from django.core.exceptions import PermissionDenied
from django.shortcuts import render
from django.forms.models import model_to_dict
from django.db.models import Case, BooleanField, When, Q, Subquery, OuterRef, Exists, Count, IntegerField
from django.db.models.functions import Coalesce
from django.utils import timezone
from django.contrib.auth.decorators import login_required
from django.urls import reverse
import datetime
from judge import event_poster as event
from judge.jinja2.gravatar import gravatar
from judge.models import Friend
from chat_box.models import Message, Profile, Room, UserRoom, Ignore
from chat_box.utils import encrypt_url, decrypt_url
import json
class ChatView(ListView):
context_object_name = 'message'
template_name = 'chat/chat.html'
title = _('Chat Box')
def __init__(self):
super().__init__()
self.room_id = None
self.room = None
self.paginate_by = 50
self.messages = None
self.paginator = None
def get_queryset(self):
return self.messages
def get(self, request, *args, **kwargs):
request_room = kwargs['room_id']
page = request.GET.get('page')
if request_room:
try:
self.room = Room.objects.get(id=request_room)
if not can_access_room(request, self.room):
return HttpResponseBadRequest()
except Room.DoesNotExist:
return HttpResponseBadRequest()
else:
request_room = None
if request_room != self.room_id or not self.messages:
self.room_id = request_room
self.messages = Message.objects.filter(hidden=False, room=self.room_id)
self.paginator = Paginator(self.messages, self.paginate_by)
if page == None:
update_last_seen(request, **kwargs)
return super().get(request, *args, **kwargs)
cur_page = self.paginator.get_page(page)
return render(request, 'chat/message_list.html', {
'object_list': cur_page.object_list,
'num_pages': self.paginator.num_pages
})
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context['title'] = self.title
context['last_msg'] = event.last()
context['status_sections'] = get_status_context(self.request)
context['room'] = self.room_id
context['unread_count_lobby'] = get_unread_count(None, self.request.profile)
if self.room:
users_room = [self.room.user_one, self.room.user_two]
users_room.remove(self.request.profile)
context['other_user'] = users_room[0]
context['other_online'] = get_user_online_status(context['other_user'])
context['is_ignored'] = Ignore.is_ignored(self.request.profile, context['other_user'])
else:
context['online_count'] = get_online_count()
context['message_template'] = {
'author': self.request.profile,
'id': '$id',
'time': timezone.now(),
'body': '$body'
}
return context
def delete_message(request):
ret = {'delete': 'done'}
if request.method == 'GET':
return JsonResponse(ret)
if request.user.is_staff:
try:
messid = int(request.POST.get('message'))
mess = Message.objects.get(id=messid)
except:
return HttpResponseBadRequest()
mess.hidden = True
mess.save()
return JsonResponse(ret)
return JsonResponse(ret)
@login_required
def post_message(request):
ret = {'msg': 'posted'}
if request.method != 'POST':
return HttpResponseBadRequest()
room = None
if request.POST['room']:
room = Room.objects.get(id=request.POST['room'])
if not can_access_room(request, room) or request.profile.mute:
return HttpResponseBadRequest()
new_message = Message(author=request.profile,
body=request.POST['body'],
room=room)
new_message.save()
if not room:
event.post('chat_lobby', {
'type': 'lobby',
'author_id': request.profile.id,
'message': new_message.id,
'room': 'None',
'tmp_id': request.POST.get('tmp_id')
})
else:
for user in room.users():
event.post('chat_' + str(user.id), {
'type': 'private',
'author_id': request.profile.id,
'message': new_message.id,
'room': room.id,
'tmp_id': request.POST.get('tmp_id')
})
return JsonResponse(ret)
def can_access_room(request, room):
return not room or room.user_one == request.profile or room.user_two == request.profile
@login_required
def chat_message_ajax(request):
if request.method != 'GET':
return HttpResponseBadRequest()
try:
message_id = request.GET['message']
except KeyError:
return HttpResponseBadRequest()
try:
message = Message.objects.filter(hidden=False).get(id=message_id)
room = message.room
if room and not room.contain(request.profile):
return HttpResponse('Unauthorized', status=401)
except Message.DoesNotExist:
return HttpResponseBadRequest()
return render(request, 'chat/message.html', {
'message': message,
})
@login_required
def update_last_seen(request, **kwargs):
if 'room_id' in kwargs:
room_id = kwargs['room_id']
elif request.method == 'GET':
room_id = request.GET.get('room')
elif request.method == 'POST':
room_id = request.POST.get('room')
else:
return HttpResponseBadRequest()
try:
profile = request.profile
room = None
if room_id:
room = Room.objects.get(id=int(room_id))
except Room.DoesNotExist:
return HttpResponseBadRequest()
except Exception as e:
return HttpResponseBadRequest()
if room and not room.contain(profile):
return HttpResponseBadRequest()
user_room, _ = UserRoom.objects.get_or_create(user=profile, room=room)
user_room.last_seen = timezone.now()
user_room.save()
return JsonResponse({'msg': 'updated'})
def get_online_count():
last_two_minutes = timezone.now()-timezone.timedelta(minutes=2)
return Profile.objects.filter(last_access__gte=last_two_minutes).count()
def get_user_online_status(user):
time_diff = timezone.now() - user.last_access
is_online = time_diff <= timezone.timedelta(minutes=2)
return is_online
def user_online_status_ajax(request):
if request.method != 'GET':
return HttpResponseBadRequest()
user_id = request.GET.get('user')
if user_id:
try:
user_id = int(user_id)
user = Profile.objects.get(id=user_id)
except Exception as e:
return HttpResponseBadRequest()
is_online = get_user_online_status(user)
return render(request, 'chat/user_online_status.html', {
'other_user': user,
'other_online': is_online,
'is_ignored': Ignore.is_ignored(request.profile, user)
})
else:
return render(request, 'chat/user_online_status.html', {
'online_count': get_online_count(),
})
def get_online_status(request_user, queryset, rooms=None):
if not queryset:
return None
last_two_minutes = timezone.now()-timezone.timedelta(minutes=2)
ret = []
if rooms:
unread_count = get_unread_count(rooms, request_user)
count = {}
for i in unread_count:
count[i['other_user']] = i['unread_count']
for user in queryset:
is_online = False
if (user.last_access >= last_two_minutes):
is_online = True
user_dict = {'user': user, 'is_online': is_online}
if rooms and user.id in count:
user_dict['unread_count'] = count[user.id]
user_dict['url'] = encrypt_url(request_user.id, user.id)
ret.append(user_dict)
return ret
def get_status_context(request, include_ignored=False):
if include_ignored:
ignored_users = Profile.objects.none()
queryset = Profile.objects
else:
ignored_users = Ignore.get_ignored_users(request.profile)
queryset = Profile.objects.exclude(id__in=ignored_users)
last_two_minutes = timezone.now()-timezone.timedelta(minutes=2)
recent_profile = Room.objects.filter(
Q(user_one=request.profile) | Q(user_two=request.profile)
).annotate(
last_msg_time=Subquery(
Message.objects.filter(room=OuterRef('pk')).values('time')[:1]
),
other_user=Case(
When(user_one=request.profile, then='user_two'),
default='user_one',
)
).filter(last_msg_time__isnull=False)\
.exclude(other_user__in=ignored_users)\
.order_by('-last_msg_time').values('other_user', 'id')[:20]
recent_profile_id = [str(i['other_user']) for i in recent_profile]
joined_id = ','.join(recent_profile_id)
recent_rooms = [int(i['id']) for i in recent_profile]
recent_list = None
if joined_id:
recent_list = Profile.objects.raw(
f'SELECT * from judge_profile where id in ({joined_id}) order by field(id,{joined_id})')
friend_list = Friend.get_friend_profiles(request.profile).exclude(id__in=recent_profile_id)\
.exclude(id__in=ignored_users)\
.order_by('-last_access')
admin_list = queryset.filter(display_rank='admin')\
.exclude(id__in=friend_list).exclude(id__in=recent_profile_id)
all_user_status = queryset\
.filter(display_rank='user',
last_access__gte = last_two_minutes)\
.annotate(is_online=Case(default=True,output_field=BooleanField()))\
.order_by('-rating').exclude(id__in=friend_list).exclude(id__in=admin_list)\
.exclude(id__in=recent_profile_id)[:30]
return [
{
'title': 'Recent',
'user_list': get_online_status(request.profile, recent_list, recent_rooms),
},
{
'title': 'Following',
'user_list': get_online_status(request.profile, friend_list),
},
{
'title': 'Admins',
'user_list': get_online_status(request.profile, admin_list),
},
{
'title': 'Other',
'user_list': get_online_status(request.profile, all_user_status),
},
]
@login_required
def online_status_ajax(request):
return render(request, 'chat/online_status.html', {
'status_sections': get_status_context(request),
'unread_count_lobby': get_unread_count(None, request.profile),
})
@login_required
def get_room(user_one, user_two):
if user_one.id > user_two.id:
user_one, user_two = user_two, user_one
room, created = Room.objects.get_or_create(user_one=user_one, user_two=user_two)
return room
@login_required
def get_or_create_room(request):
decrypted_other_id = request.GET.get('other')
request_id, other_id = decrypt_url(decrypted_other_id)
if not other_id or not request_id or request_id != request.profile.id:
return HttpResponseBadRequest()
try:
other_user = Profile.objects.get(id=int(other_id))
except Exception:
return HttpResponseBadRequest()
user = request.profile
if not other_user or not user:
return HttpResponseBadRequest()
# TODO: each user can only create <= 300 rooms
room = get_room(other_user, user)
return JsonResponse({'room': room.id, 'other_user_id': other_user.id})
def get_unread_count(rooms, user):
if rooms:
mess = Message.objects.filter(room=OuterRef('room'),
time__gte=OuterRef('last_seen'))\
.exclude(author=user)\
.order_by().values('room')\
.annotate(unread_count=Count('pk')).values('unread_count')
return UserRoom.objects\
.filter(user=user, room__in=rooms)\
.annotate(
unread_count=Coalesce(Subquery(mess, output_field=IntegerField()), 0),
other_user=Case(
When(room__user_one=user, then='room__user_two'),
default='room__user_one',
)
).filter(unread_count__gte=1).values('other_user', 'unread_count')
else: # lobby
mess = Message.objects.filter(room__isnull=True,
time__gte=OuterRef('last_seen'))\
.exclude(author=user)\
.annotate(unread_count=Count('pk')).values('unread_count')
return UserRoom.objects\
.filter(user=user, room__isnull=True)\
.annotate(
unread_count=Coalesce(Subquery(mess, output_field=IntegerField()), 0),
).values_list('unread_count', flat=True)[0]
@login_required
def toggle_ignore(request, **kwargs):
user_id = kwargs['user_id']
if not user_id:
return HttpResponseBadRequest()
try:
other_user = Profile.objects.get(id=user_id)
except:
return HttpResponseBadRequest()
Ignore.toggle_ignore(request.profile, other_user)
next_url = request.GET.get('next', '/')
return HttpResponseRedirect(next_url)