add chat box

chat_box/admin.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.

chat_box/apps.py

@@ -0,0 +1,5 @@
+from django.apps import AppConfig
+
+
+class ChatBoxConfig(AppConfig):
+    name = 'chat_box'

chat_box/consumers.py

@@ -0,0 +1,47 @@
+import json
+
+from channels.generic.websocket import AsyncWebsocketConsumer
+
+
+class ChatConsumer(AsyncWebsocketConsumer):
+    async def connect(self):
+        self.room_name = 'common'
+        self.room_group_name = 'chat_%s' % self.room_name
+
+        # Join room group
+        await self.channel_layer.group_add(
+            self.room_group_name,
+            self.channel_name,
+        )
+
+        await self.accept()
+
+    async def disconnect(self, close_code):
+        # Leave room group
+        await self.channel_layer.group_discard(
+            self.room_group_name,
+            self.channel_name,
+        )
+
+    # Receive message from WebSocket
+    async def receive(self, text_data):
+        text_data_json = json.loads(text_data)
+        message = text_data_json['message']
+
+        # Send message to room group
+        await self.channel_layer.group_send(
+            self.room_group_name,
+            {
+                'type': 'chat_message',
+                'message': message,
+            },
+        )
+
+    # Receive message from room group
+    async def chat_message(self, event):
+        message = event['message']
+
+        # Send message to WebSocket
+        await self.send(text_data=json.dumps({
+            'message': message,
+        }))

chat_box/models.py

@@ -0,0 +1,3 @@
+from django.db import models
+
+# Create your models here.

chat_box/routing.py

@@ -0,0 +1,7 @@
+from django.urls import re_path
+
+from . import consumers
+
+websocket_urlpatterns = [
+    re_path(r'ws/chat/', consumers.ChatConsumer),
+]

chat_box/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

chat_box/views.py

@@ -0,0 +1,8 @@
+from django.shortcuts import render
+from django.utils.translation import gettext as _
+
+
+def chat(request):
+    return render(request, 'chat/chat.html', {
+        'title': _('Chat Box'),
+    })

dmoj/routing.py

@@ -0,0 +1,13 @@
+import chat_box.routing
+from channels.auth import AuthMiddlewareStack
+from channels.routing import ProtocolTypeRouter, URLRouter
+
+
+application = ProtocolTypeRouter({
+    # (http->django views is added by default)
+    'websocket': AuthMiddlewareStack(
+        URLRouter(
+            chat_box.routing.websocket_urlpatterns,
+        ),
+    ),
+})

dmoj/settings.py

@@ -236,6 +236,8 @@ INSTALLED_APPS += (
     'statici18n',
     'impersonate',
     'django_jinja',
+    'chat_box',
+    'channels',
 )
 
 MIDDLEWARE = (
@@ -500,3 +502,13 @@ TESTCASE_VISIBLE_LENGTH = 60
 
 DATA_UPLOAD_MAX_NUMBER_FIELDS = 10240
 DATA_UPLOAD_MAX_MEMORY_SIZE = 2621440
+
+ASGI_APPLICATION = 'dmoj.routing.application'
+CHANNEL_LAYERS = {
+    'default': {
+        'BACKEND': 'channels_redis.core.RedisChannelLayer',
+        'CONFIG': {
+            "hosts": [('0.0.0.0', 6379)],
+        },
+    },
+}

dmoj/urls.py

@@ -1,3 +1,4 @@
+from chat_box.views import chat
 from django.conf import settings
 from django.conf.urls import include, url
 from django.contrib import admin
@@ -14,10 +15,9 @@ from judge.feed import AtomBlogFeed, AtomCommentFeed, AtomProblemFeed, BlogFeed,
 from judge.forms import CustomAuthenticationForm
 from judge.sitemap import BlogPostSitemap, ContestSitemap, HomePageSitemap, OrganizationSitemap, ProblemSitemap, \
     SolutionSitemap, UrlSitemap, UserSitemap
-from judge.views import TitledTemplateView, api, blog, comment, contests, language, license, mailgun, organization, \
-    preview, problem, problem_manage, ranked_submission, register, stats, status, submission, tasks, ticket, totp, \
-    user, widgets
-from judge.views.about import about, custom_checker_sample
+from judge.views import TitledTemplateView, about, api, blog, comment, contests, language, license, mailgun, \
+    organization, preview, problem, problem_manage, ranked_submission, register, stats, status, submission, tasks, \
+    ticket, totp, user, widgets
 from judge.views.problem_data import ProblemDataView, ProblemSubmissionDiff, \
     problem_data_file, problem_init_view
 from judge.views.register import ActivationView, RegistrationView
@@ -25,6 +25,7 @@ from judge.views.select2 import AssigneeSelect2View, CommentSelect2View, Contest
     ContestUserSearchSelect2View, OrganizationSelect2View, ProblemSelect2View, TicketUserSelect2View, \
     UserSearchSelect2View, UserSelect2View
 
+
 admin.autodiscover()
 
 register_patterns = [
@@ -362,9 +363,11 @@ urlpatterns = [
         url(r'^progress$', tasks.demo_progress),
     ])),
 
-    url(r'^about/', about, name='about'),
+    url(r'^about/', about.about, name='about'),
 
-    url(r'^custom_checker_sample', custom_checker_sample, name='custom_checker_sample'),
+    url(r'^custom_checker_sample/', about.custom_checker_sample, name='custom_checker_sample'),
+
+    url(r'chat/', chat, name='chat'),
 ]
 
 favicon_paths = ['apple-touch-icon-180x180.png', 'apple-touch-icon-114x114.png', 'android-chrome-72x72.png',

judge/migrations/0100_auto_20200127_0059.py

@@ -0,0 +1,21 @@
+# Generated by Django 2.2.9 on 2020-01-27 00:59
+
+import django.core.validators
+from django.db import migrations, models
+import judge.models.problem_data
+import judge.utils.problem_data
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('judge', '0099_custom_checker'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='problemdata',
+            name='custom_checker',
+            field=models.FileField(blank=True, null=True, storage=judge.utils.problem_data.ProblemDataStorage(), upload_to=judge.models.problem_data.problem_directory_file, validators=[django.core.validators.FileExtensionValidator(allowed_extensions=['py'])], verbose_name='custom checker file'),
+        ),
+    ]

requirements.txt

@@ -30,3 +30,7 @@ packaging
 celery
 -e git://github.com/DMOJ/ansi2html.git#egg=ansi2html
 sqlparse
+channels
+channels-redis
+docker
+

templates/chat/chat.html

@@ -0,0 +1,40 @@
+{% extends "base.html" %}
+
+{% block js_media %}
+<script type="text/javascript">
+    var chatSocket = new WebSocket(
+        'ws://' + window.location.host +
+        '/ws/chat/');
+</script>
+<script type="text/javascript">
+    $(function() {
+        chatSocket.onmessage = function(e) {
+            var data = JSON.parse(e.data);
+            var message = data['message'];
+            $('#chat-log').append(message + '\n');
+        };
+        chatSocket.onclose = function(e) {
+            console.error('Chat socket closed unexpectedly');
+        };
+        $('#chat-message-input').focus();
+        $('#chat-message-input').keyup(function(e) {
+            if (e.keyCode === 13) {  // enter, return
+                $('#chat-message-submit').click();
+            }
+        });
+        $("#chat-message-submit").click(function() {
+            var message = "{{ request.user }}: " + $('input#chat-message-input').val();
+            chatSocket.send(JSON.stringify({
+                'message': message,
+            }));
+            $('input#chat-message-input').val('');
+        });
+    });
+</script>
+{% endblock js_media %}
+
+{% block body %}
+    <textarea id="chat-log" cols="100" rows="20"></textarea><br/>
+    <input id="chat-message-input" type="text" size="100"/><br/>
+    <button id="chat-message-submit"> Send </button>
+{% endblock body %}