From ce5ea027d2d1e3e732b640b36333b68ee919b08c Mon Sep 17 00:00:00 2001
From: cuom1999 <lephuocdinh99@gmail.com>
Date: Sun, 18 Jul 2021 20:22:44 -0500
Subject: [PATCH] Add live contest notification

---
 dmoj/urls.py                         |   2 +
 judge/models/problem.py              |  22 +++++++++
 judge/views/blog.py                  |   6 +++
 judge/views/contests.py              |  70 +++++++++++++++++++++++++--
 judge/views/problem.py               |   4 ++
 logo.png                             | Bin 0 -> 13880 bytes
 resources/common.js                  |   4 ++
 templates/blog/list.html             |  19 +++++++-
 templates/contest/clarification.html |  54 +++++++++++++++++++++
 templates/problem/list.html          |  15 ++++++
 templates/problem/problem.html       |  38 +++++++++++++++
 11 files changed, 229 insertions(+), 5 deletions(-)
 create mode 100644 logo.png
 create mode 100644 templates/contest/clarification.html

diff --git a/dmoj/urls.py b/dmoj/urls.py
index 91ce3b2..0a73d5e 100644
--- a/dmoj/urls.py
+++ b/dmoj/urls.py
@@ -225,6 +225,8 @@ urlpatterns = [
         url(r'^/participation/disqualify$', contests.ContestParticipationDisqualify.as_view(),
             name='contest_participation_disqualify'),
 
+        url(r'^/clarification$', contests.NewContestClarificationView.as_view(), name='new_contest_clarification'),
+
         url(r'^/$', lambda _, contest: HttpResponsePermanentRedirect(reverse('contest_view', args=[contest]))),
     ])),
 
diff --git a/judge/models/problem.py b/judge/models/problem.py
index 4f7e545..e56b1c7 100644
--- a/judge/models/problem.py
+++ b/judge/models/problem.py
@@ -11,7 +11,9 @@ from django.db.models.functions import Coalesce
 from django.urls import reverse
 from django.utils.functional import cached_property
 from django.utils.translation import gettext_lazy as _
+from django.utils import timezone
 
+from judge import event_poster as event
 from judge.fulltext import SearchQuerySet
 from judge.models.profile import Organization, Profile
 from judge.models.runtime import Language
@@ -407,6 +409,26 @@ class ProblemClarification(models.Model):
     description = models.TextField(verbose_name=_('clarification body'))
     date = models.DateTimeField(verbose_name=_('clarification timestamp'), auto_now_add=True)
 
+    def save(self, *args, **kwargs):
+        super(ProblemClarification, self).save(*args, **kwargs)
+
+        if event.real:
+            from judge.models import ContestProblem
+
+            now = timezone.now()
+            # List all ongoing contests containing this problem
+            contest_problems = ContestProblem.objects.filter(
+                                        contest__start_time__lte=now,
+                                        contest__end_time__gt=now,
+                                        problem=self.problem).values_list('order', 'contest')
+            
+            for order, contest_id in contest_problems.iterator(): 
+                event.post('contest_clarification_' + str(contest_id), {
+                    'problem_label':  order,
+                    'problem_name': self.problem.name,
+                    'problem_code': self.problem.code,
+                    'body': self.description
+                })
 
 class LanguageLimit(models.Model):
     problem = models.ForeignKey(Problem, verbose_name=_('problem'), related_name='language_limits', on_delete=CASCADE)
diff --git a/judge/views/blog.py b/judge/views/blog.py
index 7c6cc11..07912b2 100644
--- a/judge/views/blog.py
+++ b/judge/views/blog.py
@@ -104,6 +104,12 @@ class PostList(ListView):
             context['open_tickets'] = filter_visible_tickets(tickets, self.request.user, profile)[:10]
         else:
             context['open_tickets'] = []
+
+        if self.request.in_contest:
+            if self.request.user.is_superuser or \
+               self.request.profile in self.request.participation.contest.authors.all() or \
+               self.request.profile in self.request.participation.contest.curators.all():
+                context['can_edit_contest'] = True
         return context
 
 
diff --git a/judge/views/contests.py b/judge/views/contests.py
index a20117f..90dc3c2 100644
--- a/judge/views/contests.py
+++ b/judge/views/contests.py
@@ -18,10 +18,10 @@ from django.db.models.expressions import CombinedExpression
 from django.http import Http404, HttpResponse, HttpResponseBadRequest, HttpResponseRedirect
 from django.shortcuts import get_object_or_404, render
 from django.template.defaultfilters import date as date_filter
-from django.urls import reverse
+from django.urls import reverse, reverse_lazy
 from django.utils import timezone
 from django.utils.functional import cached_property
-from django.utils.html import format_html
+from django.utils.html import format_html, escape
 from django.utils.safestring import mark_safe
 from django.utils.timezone import make_aware
 from django.utils.translation import gettext as _, gettext_lazy
@@ -32,7 +32,7 @@ from judge import event_poster as event
 from judge.comments import CommentedDetailView
 from judge.forms import ContestCloneForm
 from judge.models import Contest, ContestMoss, ContestParticipation, ContestProblem, ContestTag, \
-    Organization, Problem, Profile, Submission
+    Organization, Problem, Profile, Submission, ProblemClarification
 from judge.tasks import run_moss
 from judge.utils.celery import redirect_to_task_status
 from judge.utils.opengraph import generate_opengraph
@@ -40,11 +40,12 @@ from judge.utils.problems import _get_result_data
 from judge.utils.ranker import ranker
 from judge.utils.stats import get_bar_chart, get_pie_chart, get_histogram
 from judge.utils.views import DiggPaginatorMixin, SingleObjectFormView, TitleMixin, generic_message
+from judge.widgets import HeavyPreviewPageDownWidget
 
 __all__ = ['ContestList', 'ContestDetail', 'ContestRanking', 'ContestJoin', 'ContestLeave', 'ContestCalendar',
            'ContestClone', 'ContestStats', 'ContestMossView', 'ContestMossDelete', 'contest_ranking_ajax',
            'ContestParticipationList', 'ContestParticipationDisqualify', 'get_contest_ranking_list',
-           'base_contest_ranking_list']
+           'base_contest_ranking_list', 'ContestClarificationView']
 
 
 def _find_contest(request, key, private_check=True):
@@ -854,3 +855,64 @@ class ContestTagDetail(TitleMixin, ContestTagDetailAjax):
 
     def get_title(self):
         return _('Contest tag: %s') % self.object.name
+
+
+class ProblemClarificationForm(forms.Form):
+    body = forms.CharField(widget=HeavyPreviewPageDownWidget(preview=reverse_lazy('comment_preview'),
+                                                         preview_timeout=1000, hide_preview_button=True))
+
+    def __init__(self, request, *args, **kwargs):
+        self.request = request
+        super(ProblemClarificationForm, self).__init__(*args, **kwargs)
+        self.fields['body'].widget.attrs.update({'placeholder': _('Issue description')})
+
+
+class NewContestClarificationView(ContestMixin, TitleMixin, SingleObjectFormView):
+    form_class = ProblemClarificationForm
+    template_name = 'contest/clarification.html'
+
+    def get_form_kwargs(self):
+        kwargs = super(NewContestClarificationView, self).get_form_kwargs()
+        kwargs['request'] = self.request
+        return kwargs
+
+    def is_accessible(self):
+        if not self.request.user.is_authenticated:
+            return False
+        if not self.request.in_contest:
+            return False
+        if not self.request.participation.contest == self.get_object():
+            return False
+        return self.request.user.is_superuser or \
+               self.request.profile in self.request.participation.contest.authors.all() or \
+               self.request.profile in self.request.participation.contest.curators.all()
+
+    def get(self, request, *args, **kwargs):
+        if not self.is_accessible():
+            raise Http404()
+        return super().get(self, request, *args, **kwargs)
+
+    def form_valid(self, form):
+        problem_code = self.request.POST['problem']
+        description = form.cleaned_data['body']
+
+        clarification = ProblemClarification(description=description)
+        clarification.problem = Problem.objects.get(code=problem_code)
+        clarification.save()
+        
+        link = reverse('home')
+        return HttpResponseRedirect(link)
+
+    def get_title(self):
+        return "New clarification for %s" % self.object.name
+
+    def get_content_title(self):
+        return mark_safe(escape(_('New clarification for %s')) %
+                         format_html('<a href="{0}">{1}</a>', reverse('problem_detail', args=[self.object.key]),
+                                     self.object.name))
+
+    def get_context_data(self, **kwargs):
+        context = super(NewContestClarificationView, self).get_context_data(**kwargs)
+        context['problems'] = ContestProblem.objects.filter(contest=self.object)\
+                                         .order_by('order')
+        return context
\ No newline at end of file
diff --git a/judge/views/problem.py b/judge/views/problem.py
index 4c8e345..bfa6bb0 100644
--- a/judge/views/problem.py
+++ b/judge/views/problem.py
@@ -25,6 +25,7 @@ from django.views.generic import ListView, View
 from django.views.generic.base import TemplateResponseMixin
 from django.views.generic.detail import SingleObjectMixin
 
+from judge import event_poster as event
 from judge.comments import CommentedDetailView
 from judge.forms import ProblemCloneForm, ProblemSubmitForm
 from judge.models import ContestProblem, ContestSubmission, Judge, Language, Problem, ProblemGroup, \
@@ -170,8 +171,10 @@ class ProblemDetail(ProblemMixin, SolvedProblemMixin, CommentedDetailView):
         contest_problem = (None if not authed or user.profile.current_contest is None else
                            get_contest_problem(self.object, user.profile))
         context['contest_problem'] = contest_problem
+
         if contest_problem:
             clarifications = self.object.clarifications
+            context['last_msg'] = event.last()
             context['has_clarifications'] = clarifications.count() > 0
             context['clarifications'] = clarifications.order_by('-date')
             context['submission_limit'] = contest_problem.max_submissions
@@ -434,6 +437,7 @@ class ProblemList(QueryStringSortMixin, TitleMixin, SolvedProblemMixin, ListView
             context['hot_problems'] = hot_problems(timedelta(days=1), 7)
             context['point_start'], context['point_end'], context['point_values'] = self.get_noui_slider_points()
         else:
+            context['last_msg'] = event.last()
             context['hot_problems'] = None
             context['point_start'], context['point_end'], context['point_values'] = 0, 0, {}
             context['hide_contest_scoreboard'] = self.contest.scoreboard_visibility in \
diff --git a/logo.png b/logo.png
new file mode 100644
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GIT binary patch
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literal 0
HcmV?d00001

diff --git a/resources/common.js b/resources/common.js
index 04e8ebe..d2955ab 100644
--- a/resources/common.js
+++ b/resources/common.js
@@ -322,6 +322,10 @@ window.register_notify = function (type, options) {
     status_change();
 };
 
+window.notify_clarification = function(msg) {
+    var message = `Problem ${msg.problem_label} (${msg.problem_name}):\n` + msg.body;
+    alert(message);
+}
 
 $(function () {
     // Close dismissable boxes
diff --git a/templates/blog/list.html b/templates/blog/list.html
index cf11c72..38ead62 100644
--- a/templates/blog/list.html
+++ b/templates/blog/list.html
@@ -48,6 +48,14 @@
         h3 a {
             color: lightcyan;
         }
+
+        #add-clarification {
+            float: left;
+            color: chartreuse;
+        }
+        #add-clarification:hover {
+            color: cyan;
+        }
     </style>
 {% endblock %}
 
@@ -104,7 +112,16 @@
         <div class="blog-sidebar">
             {% if request.in_contest and request.participation.contest.use_clarifications %}
                 <div class="blog-sidebox sidebox">
-                    <h3>{{ _('Clarifications') }} <i class="fa fa-question-circle"></i></h3>
+                    <h3>{{ _('Clarifications') }}
+                            <i class="fa fa-question-circle"></i>
+                            {% if can_edit_contest %}
+                            <a href="{{url('new_contest_clarification', request.participation.contest.key)}}" 
+                               class="fa fa-plus-circle" 
+                               id="add-clarification"
+                               title="{{_('Add')}}">
+                            </a>
+                            {% endif %}
+                    </h3>
                     <div class="sidebox-content">
                         {% if has_clarifications %}
                             <ul>
diff --git a/templates/contest/clarification.html b/templates/contest/clarification.html
new file mode 100644
index 0000000..156ea17
--- /dev/null
+++ b/templates/contest/clarification.html
@@ -0,0 +1,54 @@
+{% extends "base.html" %}
+
+{% block media %}
+    {{ form.media.css }}
+    <style>
+        form#clarification-form {
+            display: block;
+            margin: 0 auto;
+            width: 100%;
+            max-width: 750px;
+            padding-top: 1em;
+        }
+
+        #id_title {
+            width: 100%;
+        }
+
+        form#clarification-form .submit {
+            margin: 10px 0 0 auto;
+        }
+    </style>
+{% endblock %}
+
+{% block js_media %}
+{{ form.media.js }}
+<script>
+    $(function() {
+        $('#problem-select').select2({width: '40em'});
+    });
+</script>
+{% endblock %}
+
+{% block body %}
+    <form id="clarification-form" action="" method="POST" class="form-area">
+        {% csrf_token %}
+        {% if form.body.errors %}
+            <div class="form-errors">
+                {{ form.body.errors }}
+            </div>
+        {% endif %}
+        <h4>
+            <span>{{_('Problem')}}: </span>
+            <select name="problem" id="problem-select">
+                {% for problem in problems %}
+                    <option value="{{ problem.problem.code }}" class="point-dropdown">
+                        {{ problem.order }}. {{problem.problem.name}}
+                    </option>
+                {% endfor %}
+            </select>
+        </h4>
+        <div class="body-block">{{ form.body }}</div>
+        <button type="submit" class="submit">{{ _('Create') }}</button>
+    </form>
+{% endblock %}
diff --git a/templates/problem/list.html b/templates/problem/list.html
index 0054d24..7057d74 100644
--- a/templates/problem/list.html
+++ b/templates/problem/list.html
@@ -132,6 +132,21 @@
         </script>
     {% endcompress %}
     {% if request.in_contest %}
+        {% if last_msg %}
+            <script type="text/javascript" src="{{ static('event.js') }}"></script>
+            <script>
+                function setup_event_contest(last_msg) {
+                    var channel = ['contest_clarification_' + {{request.participation.contest.id}}]
+                    return new EventReceiver(
+                        "{{ EVENT_DAEMON_LOCATION }}", "{{ EVENT_DAEMON_POLL_LOCATION }}",
+                        channel, last_msg, function (message) {
+                            notify_clarification(message);
+                        }
+                    );
+                }
+                setup_event_contest();
+            </script>
+        {% endif %}
         {% compress js %}
             <script src="{{ static('libs/tablesorter.js') }}" type="text/javascript"></script>
             <script type="text/javascript">
diff --git a/templates/problem/problem.html b/templates/problem/problem.html
index 9dab1f6..3c0669c 100644
--- a/templates/problem/problem.html
+++ b/templates/problem/problem.html
@@ -47,11 +47,36 @@
             width: 0;
             height: 0;
         }
+
+        #clarification_header {
+            color: red;
+            cursor: pointer;
+        }
+        #clarification_header:hover {
+            color: orange;
+        }
     </style>
 {% endblock %}
 
 {% block content_js_media %}
     {% include "comments/media-js.html" %}
+    {% if request.in_contest %}
+        {% if last_msg %}
+            <script type="text/javascript" src="{{ static('event.js') }}"></script>
+            <script>
+                function setup_event_contest(last_msg) {
+                    var channel = ['contest_clarification_' + {{request.participation.contest.id}}]
+                    return new EventReceiver(
+                        "{{ EVENT_DAEMON_LOCATION }}", "{{ EVENT_DAEMON_POLL_LOCATION }}",
+                        channel, last_msg, function (message) {
+                            notify_clarification(message);
+                        }
+                    );
+                }
+                setup_event_contest();
+            </script>
+        {% endif %}
+    {% endif %}
     <script type="text/javascript">
         $(function() {
             $('#pdf_button').click(async function(e) {
@@ -61,6 +86,10 @@
                 }
                 frames['raw_problem'].print();
             });
+            $('#clarification_header').on('click', function() {
+                $('#clarification_header_container').hide();
+                window.scrollTo(0, document.body.scrollHeight);
+            })
         });
     </script>
 {% endblock %}
@@ -299,6 +328,15 @@
 {% endblock %}
 
 {% block description %}
+    {% if contest_problem and contest_problem.contest.use_clarifications and has_clarifications %}
+        <div id="clarification_header_container">
+            <i class="fa fa-question-circle"></i>
+            <a id="clarification_header">
+                {{ _('This problem has %d clarification(s)' % clarifications|length) }}
+            </a>
+        </div>
+    {% endif %}
+
     {% cache 86400 'problem_html' problem.id MATH_ENGINE LANGUAGE_CODE %}
         {{ description|markdown("problem", MATH_ENGINE)|reference|str|safe }}
     {% endcache %}