NDOJ/chat_box/views.py
2023-05-20 08:52:37 +09:00

534 lines
15 KiB
Python
Executable file

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 = _("LQDOJ Chat")
def __init__(self):
super().__init__()
self.room_id = None
self.room = None
self.messages = None
self.page_size = 20
def get_queryset(self):
return self.messages
def has_next(self):
try:
msg = Message.objects.filter(room=self.room_id).earliest("id")
except Exception as e:
return False
return msg not in self.messages
def get(self, request, *args, **kwargs):
request_room = kwargs["room_id"]
try:
last_id = int(request.GET.get("last_id"))
except Exception:
last_id = 1e15
only_messages = request.GET.get("only_messages")
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
self.room_id = request_room
self.messages = Message.objects.filter(
hidden=False, room=self.room_id, id__lt=last_id
)[: self.page_size]
if not only_messages:
update_last_seen(request, **kwargs)
return super().get(request, *args, **kwargs)
return render(
request,
"chat/message_list.html",
{
"object_list": self.messages,
"has_next": self.has_next(),
},
)
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["has_next"] = self.has_next()
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 HttpResponseBadRequest()
if not request.user.is_staff:
return HttpResponseBadRequest()
try:
messid = int(request.POST.get("message"))
mess = Message.objects.get(id=messid)
except:
return HttpResponseBadRequest()
mess.hidden = True
mess.save()
return JsonResponse(ret)
def mute_message(request):
ret = {"mute": "done"}
if request.method == "GET":
return HttpResponseBadRequest()
if not request.user.is_staff:
return HttpResponseBadRequest()
try:
messid = int(request.POST.get("message"))
mess = Message.objects.get(id=messid)
except:
return HttpResponseBadRequest()
mess.author.mute = True
mess.author.save()
Message.objects.filter(room=None, author=mess.author).update(hidden=True)
return JsonResponse(ret)
@login_required
def post_message(request):
ret = {"msg": "posted"}
if request.method != "POST":
return HttpResponseBadRequest()
if len(request.POST["body"]) > 5000:
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": "Admin",
"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):
if request.method == "GET":
decrypted_other_id = request.GET.get("other")
elif request.method == "POST":
decrypted_other_id = request.POST.get("other")
else:
return HttpResponseBadRequest()
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)
for u in [other_user, user]:
user_room, created = UserRoom.objects.get_or_create(user=u, room=room)
if created:
user_room.last_seen = timezone.now()
user_room.save()
if request.method == "GET":
return JsonResponse({"room": room.id, "other_user_id": other_user.id})
return HttpResponseRedirect(reverse("chat", kwargs={"room_id": room.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)
.order_by()
.values("room")
.annotate(unread_count=Count("pk"))
.values("unread_count")
)
res = (
UserRoom.objects.filter(user=user, room__isnull=True)
.annotate(
unread_count=Coalesce(Subquery(mess, output_field=IntegerField()), 0),
)
.values_list("unread_count", flat=True)
)
return res[0] if len(res) else 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)