Use PDF rendering tools from core

aleksis/apps/chronos/views.py

@@ -18,6 +18,7 @@ from rules.contrib.views import permission_required
 from aleksis.core.models import Announcement, Group, Person
 from aleksis.core.util import messages
 from aleksis.core.util.core_helpers import get_site_preferences, has_person
+from aleksis.core.util.pdf import render_pdf
 
 from .forms import LessonSubstitutionForm
 from .managers import TimetableType
@@ -195,17 +196,10 @@ def timetable(
 
     if is_print:
         template_name = "chronos/timetable_print.html"
-        template = get_template(template_name)
-
-        html_template = render_to_string(template_name, context).replace("/static", STATIC_ROOT)
-        f, path = mkstemp(".html")
-        print(path)
-        with open(path, "w") as f:
-            f.write(html_template)
-        f2, path2 = mkstemp(".pdf")
-        subprocess.run(["electron-pdf", path, path2])
-        file = open(path2, "rb")
-        return FileResponse(file, content_type="application/pdf")
+        context["back_url"] = reverse(
+            "timetable_by_week", args=[type_.value, pk, wanted_week.year, wanted_week.week],
+        )
+        return render_pdf(request, template_name, context)
     else:
         template_name = "chronos/timetable.html"