feat: collect and show links from submissions

pretalx_musicrate/locale/de_DE/LC_MESSAGES/django.po

@@ -77,7 +77,7 @@ msgstr ""
 msgid "Join"
 msgstr "Mitmachen"
 
-#: pretalx_musicrate/templates/pretalx_musicrate/present.html:15
+#: pretalx_musicrate/templates/pretalx_musicrate/present.html:25
 msgid "Show Join QR Code"
 msgstr "Mitmach-QR-Code anzeigen"
 
@@ -101,19 +101,19 @@ msgstr "Zurück"
 msgid "Next"
 msgstr "Weiter"
 
-#: pretalx_musicrate/views.py:32
+#: pretalx_musicrate/views.py:40
 msgid "Invalid token"
 msgstr "Ungültiges Token"
 
-#: pretalx_musicrate/views.py:107
+#: pretalx_musicrate/views.py:115
 msgid "The pretalx-musicrate settings were updated."
 msgstr "Die pretalx-musicrate-Einstellungen wurden gespeichert."
 
-#: pretalx_musicrate/views.py:266
+#: pretalx_musicrate/views.py:274
 msgid "Saved!"
 msgstr "Gespeichert!"
 
-#: pretalx_musicrate/views.py:323
+#: pretalx_musicrate/views.py:372
 #, python-format
 msgid "%(num_ratings)d of %(num_jurors)d has rated this submission"
 msgid_plural "%(num_ratings)d of %(num_jurors)d have rated this submission"

pretalx_musicrate/templates/pretalx_musicrate/present.html

@@ -2,6 +2,7 @@
 {% load compress %}
 {% load i18n %}
 {% load static %}
+{% load youtube %}
 
 {% block submission_header %}
     {% if next %}
@@ -12,6 +13,15 @@
 {% endblock %}
 
 {% block submission_content %}
+    {% for type, link in links %}
+        {% if type == 'youtube' %}
+            <div class="embed-responsive embed-responsive-16by9 mb-3">
+                {% youtube link %}
+            </div>
+        {% else %}
+            <p>{{ link | urlize }}</p>
+        {% endif %}
+    {% endfor %}
     <a class="btn btn-primary btn-lg btn-block mb-3" href="{% url "plugins:pretalx_musicrate:qrcode" event=request.event.slug %}">{% translate "Show Join QR Code" %}</a>
     <p class="text-center" id="status"></p>
 {% endblock %}

pretalx_musicrate/templatetags/youtube.py

@@ -0,0 +1,12 @@
+from django import template
+from django.utils.html import format_html
+
+register = template.Library()
+
+
+@register.simple_tag
+def youtube(v):
+    return format_html(
+        '<iframe allow="autoplay; encrypted-media" allowfullscreen="" src="https://www.youtube-nocookie.com/embed/{}" width="560" height="315" frameborder="0"></iframe>',
+        v,
+    )

pretalx_musicrate/views.py

@@ -1,10 +1,13 @@
+import re
 from hmac import compare_digest
+from urllib.parse import parse_qs, urlparse
 
 from django.contrib import messages
 from django.http import JsonResponse
 from django.shortcuts import get_object_or_404, redirect
 from django.urls import reverse
 from django.utils.functional import cached_property
+from django.utils.html import Urlizer
 from django.utils.translation import gettext_lazy as _, ngettext
 from django.views.generic import FormView, TemplateView, View
 from django.views.generic.detail import SingleObjectMixin
@@ -14,6 +17,10 @@ from pretalx.common.mixins.views import EventPermissionRequired
 from .forms import MusicrateSettingsForm, RatingForm
 from .models import Juror, Rating
 
+youtube_re = re.compile(
+    r"(?:https?://)?(youtu\.be/|(?:(?:m|www)\.)?youtube\.com/watch\?)", re.IGNORECASE
+)
+
 
 class JoinView(TemplateView):
     template_name = "pretalx_musicrate/join.html"
@@ -286,6 +293,44 @@ class PresenterView(EventPermissionRequired, SubmissionMixin, TemplateView):
     permission_required = "orga.view_submissions"
     template_name = "pretalx_musicrate/present.html"
 
+    @context
+    @cached_property
+    def links(self):
+        class Extractor:
+            def __init__(self):
+                self.urls = []
+
+            def format(self, href, **kwargs):
+                self.urls.append(href)
+                return href
+
+        extractor = Extractor()
+        urlizer = Urlizer()
+        urlizer.url_template = extractor
+        urlizer(self.submission.abstract)
+        urlizer(self.submission.description)
+        urlizer(self.submission.notes)
+        urlizer(self.submission.internal_notes)
+        links = []
+        for url in extractor.urls:
+            if (m := youtube_re.search(url)) is not None:
+                links.append(
+                    (
+                        "youtube",
+                        url.removeprefix("http")
+                        .removeprefix("s")
+                        .removeprefix("://")
+                        .removeprefix("youtu.be/")[:11]
+                        if m[1] == "youtu.be/"
+                        else "".join(
+                            parse_qs(urlparse(url).query).get("v", "dQw4w9WgXcQ")
+                        ),
+                    )
+                )
+            else:
+                links.append(("other", url))
+        return links
+
     @context
     @property
     def can_continue(self):
@@ -303,7 +348,9 @@ class PresenterView(EventPermissionRequired, SubmissionMixin, TemplateView):
                 settings.save()
             except Exception:
                 pass
-        return super().get(request, *args, **kwargs)
+        response = super().get(request, *args, **kwargs)
+        response._csp_update = {"frame-src": "https://www.youtube-nocookie.com"}
+        return response
 
 
 class MayAdvanceView(EventPermissionRequired, SubmissionMixin, View):