Add clarifications to the team problemset page.

Fixes #3009

Author: meisterT

webapp/src/Service/DOMJudgeService.php

@@ -1028,6 +1028,7 @@ public function getTwigDataForProblemsAction(
 
         $problems = [];
         $samples = [];
+        $clars = [];
         if ($contest && ($forJury || $contest->getFreezeData()->started())) {
             $problems = $this->em->createQueryBuilder()
                 ->from(ContestProblem::class, 'cp')
@@ -1057,6 +1058,31 @@ public function getTwigDataForProblemsAction(
             foreach ($samplesData as $sample) {
                 $samples[$sample['probid']] = $sample['numsamples'];
             }
+
+            // Do not show any clars to the public.
+            $juryOrValidTeam = $forJury || $contest;
+            if ($juryOrValidTeam) {
+                $raw_clars = $this->em->createQueryBuilder()
+                    ->from(Clarification::class, 'clar')
+                    ->select('clar')
+                    ->andWhere('clar.contest = :cid')
+                    // Only clars associated with a problem.
+                    ->andWhere('clar.problem IS NOT NULL')
+                    // Only clars send from the jury.
+                    ->andWhere('clar.sender IS NULL')
+                    // Only clars send to all teams or just this team.
+                    ->andWhere('clar.recipient IS NULL OR clar.recipient = :teamid')
+                    ->setParameter('cid', $contest->getCid())
+                    ->setParameter('teamid', $teamId)
+                    ->orderBy('clar.submittime', 'DESC')
+                    ->getQuery()
+                    ->getResult();
+
+                // Group clarifications by problem id.
+                foreach ($raw_clars as $clar) {
+                    $clars[$clar->getProblem()->getProbid()][] = $clar;
+                }
+            }
         }
 
         $data = [
@@ -1065,6 +1091,7 @@ public function getTwigDataForProblemsAction(
             'showLimits' => $showLimits,
             'defaultMemoryLimit' => $defaultMemoryLimit,
             'timeFactorDiffers' => $timeFactorDiffers,
+            'clarifications' => $clars,
         ];
 
         if ($contest && $this->config->get('show_public_stats')) {

webapp/templates/partials/problem_list.html.twig

@@ -155,6 +155,21 @@
                                             </ol>
                                         {% endif %}
 
+                                        {% if clarifications[problem.probid] is defined and clarifications[problem.probid] %}
+                                            <hr/>
+                                            <h3 class="text-center">Clarifications</h3>
+                                            <ol class="list-group list-group-flush">
+                                                {% for clar in clarifications[problem.probid] %}
+                                                    <li class="list-group-item">
+                                                        <a data-ajax-modal data-ajax-modal-after="markSeen"
+                                                           href="{{ path('team_clarification', {clarId: clar.clarid}) }}">
+                                                            <strong>{{ clar.submittime | printtime(null, contest) }}:</strong>
+                                                            {{ clar.summary }}
+                                                        </a>
+                                                    </li>
+                                                {% endfor %}
+                                        {% endif %}
+
                                     </div>
                                 </div>
                 </div>