almost chatbox

chat_box/consumers.py

@@ -2,6 +2,9 @@ import json
 from channels.generic.websocket import AsyncWebsocketConsumer
 from .models import Message
 from .views import format_time
+from django.urls import reverse
+from django.http import HttpResponse, HttpResponseRedirect
+
 
 from judge.models.profile import Profile
 
@@ -14,7 +17,7 @@ class ChatConsumer(AsyncWebsocketConsumer):
         # Join room group
         await self.channel_layer.group_add(
             self.room_group_name,
-            self.channel_name
+            self.channel_name,
         )
 
         await self.accept()
@@ -23,7 +26,7 @@ class ChatConsumer(AsyncWebsocketConsumer):
         # Leave room group
         await self.channel_layer.group_discard(
             self.room_group_name,
-            self.channel_name
+            self.channel_name,
         )
 
     # Receive message from WebSocket
@@ -58,6 +61,5 @@ def save_data_and_get_time(message):
                                         .get(id=message['author_id']),
                           )
     new_message.save()
+    HttpResponseRedirect(reverse('chat'))
     return new_message.time
-
-

chat_box/views.py

@@ -1,19 +1,44 @@
 from django.utils.translation import gettext as _
 from django.views.generic import ListView
+from django.http import HttpResponse, HttpResponseRedirect
+from django.shortcuts import render
+from django.core.paginator import Paginator
+from django.urls import reverse
 
+from judge.jinja2.gravatar import gravatar
 from .models import Message
+import json
 
 
 def format_time(time):
     return time.strftime('%H:%M %p  %d-%m-%Y')
 
 
+def format_messages(messages):
+    msg_list = [{
+        'time': format_time(msg.time),
+        'author': str(msg.author),
+        'body': msg.body,
+        'image': gravatar(msg.author, 32),
+    } for msg in messages]
+    return json.dumps(msg_list)
+
+
 class ChatView(ListView):
     model = Message
     context_object_name = 'message'
     template_name = 'chat/chat.html'
     title = _('Chat Box')
     paginate_by = 50
+    paginator = Paginator(Message.objects.all(), paginate_by)
+
+    def get(self, request, *args, **kwargs):
+        page = request.GET.get('page')
+        if (page == None):
+            return super().get(request, *args, **kwargs)
+
+        cur_page = self.paginator.get_page(page)
+        return HttpResponse(format_messages(cur_page.object_list))
 
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)

dmoj/urls.py

@@ -4,7 +4,7 @@ from django.conf.urls import include, url
 from django.contrib import admin
 from django.contrib.auth import views as auth_views
 from django.contrib.sitemaps.views import sitemap
-from django.http import Http404, HttpResponsePermanentRedirect
+from django.http import Http404, HttpResponsePermanentRedirect, HttpResponseRedirect
 from django.templatetags.static import static
 from django.urls import reverse
 from django.utils.functional import lazystr
@@ -369,7 +369,9 @@ urlpatterns = [
     url(r'^custom_checker_sample/', about.custom_checker_sample, name='custom_checker_sample'),
 
     url(r'^chat/', include([
-        url(r'^$', login_required(ChatView.as_view()), name='chat'),
+        url(r'^$', 
+            login_required(ChatView.as_view()),
+            name='chat'),
 
     ])),
 ]

resources/base.scss

@@ -219,11 +219,11 @@ header {
 
 #nav-shadow {
     height: 2px;
-    background: linear-gradient(#63c8f9, transparent);
+    background: linear-gradient(#7dc7ff, transparent);
 }
 
 #nav-container {
-    background: linear-gradient(#c1e9fd, #63c8f9);
+    background: #7dc7ff;
 
     // opacity: 0.77;
     // filter: alpha(opacity=77)

resources/chatbox.scss

@@ -7,6 +7,7 @@
     overflow-wrap: break-word;
     overflow-y: scroll;
 }
+
 #loader {
     display: block;
     margin-left: auto;
@@ -16,6 +17,7 @@
 
 #chat-log {
     padding: 0;
+    padding-top: 2em;
     width: 100%;
 }
 
@@ -61,8 +63,9 @@
 .clear {
     clear: both;
 }
-.message {
+.content-message {
     word-wrap: break-word;
+    white-space: pre-line;
 }
 
 

resources/widgets.scss

@@ -305,8 +305,8 @@ ul.pagination {
         .active-page > {
             a {
                 z-index: 2;
-                color: #FFF;
+                color: black;
-                background-color: $highlight_blue;
+                background-color: #7dc7ff;
                 border-color: transparent;
                 cursor: default;
             }

templates/chat/chat.html

@@ -7,6 +7,8 @@
 </script>
 <script type="text/javascript">
     $(function() {
+        let currentPage = 1;
+
         $('#loader').hide();
 
         chatSocket.onmessage = function(e) {
@@ -15,52 +17,86 @@
             loadMessage(data['body'],
                         data['author'],
                         data['time'],
-                        data['image'])
+                        data['image'],
+                        true)
+            $('#chat-box').scrollTop($('#chat-box')[0].scrollHeight);
         };
         
-        function loadMessage(content, user, time, image) {
+        function encodeHTML(content) {
-            li = `<li class="infinite-item"> 
+            return content.replace(/[\u00A0-\u9999<>\&]/gim, function(i) {
+                   return '&#'+i.charCodeAt(0)+';';
+            });
+        }
+
+        function loadMessage(content, user, time, image, isNew) {
+            if (isNew) content = encodeHTML(content)
+            li = `<li class="message"> 
                     <img src="${image}" class="profile-pic">
                     <div class="body-message">
                         <div class="user-time">
-                            <a href="#" class="user">
+                            <a href="{{ url('user_page') }}/${user}" class="user">
                                 ${user}
                             </a>
                             <span class="time">${time}</span>
                         </div>
-                        <span class="message">
+                        <span class="content-message">${content}                   </span>
-                            <span>${content}</span>
-                        </span>
                     </div>
                     <div class="clear"></div>
                 </li>`
             ul = $('#chat-log')
+            if (isNew) {
                 ul.append(li)
-            $('#chat-box').scrollTop($('#chat-box')[0].scrollHeight);
+            }
+            else {
+                ul.prepend(li)
+            }
         }
 
         (function init_chatlog() {
             ul = $('#chat-log')
-            {% for msg in message|reverse %}
+            {% for msg in message %}
-                loadMessage('{{msg.body}}', '{{msg.author}}', '{{msg.time}}', '{{gravatar(msg.author, 32)}}')
+                loadMessage(`{{msg.body}}`, `{{msg.author}}`, `{{msg.time}}`, `{{gravatar(msg.author, 32)}}`)
             {% endfor %}
+            $('#chat-box').scrollTop($('#chat-box')[0].scrollHeight);
         })()
 
-        $('#chat-box').scroll(function() {
+        function scrollTopOfBottom(container) {
-            if ($('#chat-box').scrollTop() == 0) {
+            return container[0].scrollHeight - container.innerHeight()
-                console.log('Hi')
+        }
-                $('#loader').show()
+
+        function scrollContainer(container, loader) {
+            container.scroll(function() {
+            if (container.scrollTop() == 0) {
+                if (currentPage < {{paginator.num_pages}}) {
+                    currentPage++;
+                    loader.show();
+                    $.ajax({
+                        url: `{{request.path}}?page=${currentPage}`,
+                        success: function(data) {
+                            let lastMsg = $('.message:first')
+                            let lastMsgPos = scrollTopOfBottom(container)
+
+                            data = JSON.parse(data)
+                            setTimeout( () => {
+                                for (msg of data) {
+                                    loadMessage(msg.body, msg.author, msg.time, msg.image)
+                                }
+                                
+                                loader.hide()
+
+                                // scroll to last msg
+                                container.scrollTop(
+                                    scrollTopOfBottom(container) - lastMsgPos
+                                )
+                            }, 500)
                         }
                     })
-        // var infinite = new Waypoint.Infinite({
+                }
-        //     element: $('.infinite-container')[0],
+            }
-        //     onBeforePageLoad: function () {
+        })}
-        //         $('.loading').show();
+
-        //     },
+        scrollContainer($('#chat-box'), $('#loader'))
-        //     onAfterPageLoad: function ($items) {
+
-        //         $('.loading').hide();
-        //     }
-        // });
         
         $("#chat-submit").click(function() {
             if ($("#chat-input").val().trim()) {
@@ -74,7 +110,6 @@
                     'author_id': {{request.profile.id}},
                 }
 
-                // $.post("send/", message)
                 chatSocket.send(JSON.stringify({
                     'message': message
                 }));
@@ -126,7 +161,7 @@
     <div id="chat-area">
         <div id="chat-box">
             <img src="http://opengraphicdesign.com/wp-content/uploads/2009/01/loader64.gif" id="loader">
-            <ul id="chat-log" class="infinite-container waypoint">
+            <ul id="chat-log">
             </ul>
         </div>
         {{_('Your message')}}