Add download AC submissions

dmoj/urls.py

@@ -119,6 +119,7 @@ urlpatterns = [
         url(r'^/pdf$', problem.ProblemPdfView.as_view(), name='problem_pdf'),
         url(r'^/pdf/(?P<language>[a-z-]+)$', problem.ProblemPdfView.as_view(), name='problem_pdf'),
         url(r'^/clone', problem.ProblemClone.as_view(), name='problem_clone'),
+        url(r'^/downloadAC$', problem.download_submissions, name='download_submissions'),
         url(r'^/submit$', problem.problem_submit, name='problem_submit'),
         url(r'^/resubmit/(?P<submission>\d+)$', problem.problem_submit, name='problem_submit'),
 

judge/views/problem.py

@@ -4,6 +4,7 @@ import shutil
 from datetime import timedelta
 from operator import itemgetter
 from random import randrange
+import zipfile, tempfile
 
 from django.conf import settings
 from django.contrib.auth.decorators import login_required
@@ -676,4 +677,22 @@ class ProblemClone(ProblemMixin, PermissionRequiredMixin, TitleMixin, SingleObje
         problem.language_limits.set(language_limits)
         problem.types.set(types)
 
-        return HttpResponseRedirect(reverse('admin:judge_problem_change', args=(problem.id,)))
+        return HttpResponseRedirect(reverse('admin:judge_problem_change', args=(problem.id,)))
+
+
+def download_submissions(request, problem):
+    submissions = Submission.objects.filter(problem__code=problem, result='AC')
+
+    with tempfile.SpooledTemporaryFile() as tmp:
+        with zipfile.ZipFile(tmp, 'w', zipfile.ZIP_DEFLATED) as archive:
+            for submission in submissions:
+                file_name = str(submission.id) + '.' + str(submission.language.key)
+                archive.writestr(file_name, submission.source.source)
+            
+        # Reset file pointer
+        tmp.seek(0)
+
+        # Write file data to response
+        response = HttpResponse(tmp.read(), content_type='application/x-zip-compressed')
+        response['Content-Disposition'] = 'attachment; filename="%s"' % (str(problem) + '_submissions.zip')
+        return response

templates/problem/problem.html

@@ -126,6 +126,12 @@
     {% endif %}
     <div><a href="{{ url('chronological_submissions', problem.code) }}">{{ _('All submissions') }}</a></div>
     <div><a href="{{ url('ranked_submissions', problem.code) }}">{{ _('Best submissions') }}</a></div>
+    {% if request.user.is_superuser %}
+        <div>
+            <a href="{{ url('download_submissions', problem.code) }}"> {{ _('Download AC submissions') }} </a>
+        </div>
+    {% endif %}
+    
     {% if editorial and editorial.is_public and 
             not (request.user.is_authenticated and request.profile.current_contest) %}
         <hr>