Merge pull request #66 from pyvec/session-slides-video

Session details: videos + slides

Author: jsmitka

program/admin.py

@@ -1,5 +1,11 @@
+from pathlib import PurePath
+from urllib.parse import quote
+
+import requests
 from django.contrib import admin
+from django.core.files.base import ContentFile
 from django.db import transaction
+from django.utils.html import format_html
 
 from program import pretalx, pretalx_sync
 from program.models import Room, Slot, Speaker, Talk, Utility, Workshop
@@ -140,7 +146,6 @@ class TalkAdmin(admin.ModelAdmin):
                 "fields": [
                     "pretalx_code",
                     "og_image",
-                    "video_id",
                 ],
             },
         ),
@@ -153,6 +158,17 @@ class TalkAdmin(admin.ModelAdmin):
                 ],
             },
         ),
+        (
+            "Slides and Video",
+            {
+                "fields": [
+                    "video_url",
+                    "video_image_html",
+                    "slides_file",
+                    "slides_description",
+                ],
+            },
+        ),
         (
             "Talk info (edit in pretalx)",
             {
@@ -181,10 +197,29 @@ class TalkAdmin(admin.ModelAdmin):
         "minimum_python_knowledge",
         "minimum_topic_knowledge",
         "type",
+        "video_image_html",
     ]
     actions = [make_public, make_not_public, talk_update_from_pretalx]
     change_form_template = "program/admin/change_form_session.html"
 
+    @admin.display(description="Video Image")
+    def video_image_html(self, obj: Talk):
+        if not obj.video_image:
+            return "(no image)"
+
+        html = (
+            '<a href="{image_url}" style="display: inline-block">'
+            '<img src="{image_url}" height="180"/><br>'
+            '<span style="display: inline-block; margin-top: 1ex;">{image_name}</span>'
+            "</a>"
+        )
+
+        return format_html(
+            html,
+            image_url=obj.video_image.url,
+            image_name=obj.video_image.name,
+        )
+
     def get_queryset(self, request):
         qs = super().get_queryset(request)
         qs = qs.prefetch_related("talk_speakers")
@@ -201,12 +236,52 @@ def get_readonly_fields(self, request, obj=None):
         return ro_fields
 
     def save_model(self, request, obj: Talk, form, change: bool) -> None:
+        if change:
+            self._update_video_image(obj)
+
         obj.save()
 
         if not change and obj.pretalx_code:
             sync = create_pretalx_sync()
             sync.update_talks([obj])
 
+    def _update_video_image(self, talk: Talk):
+        video_id = talk.video_id
+        if not video_id:
+            # Delete the existing image, if any.
+            if talk.video_image:
+                talk.video_image.delete(save=False)
+            return
+
+        # Get the video ID of the current image:
+        # the image is always named <video_id>.jpg
+        image_video_id: str | None = None
+        if talk.video_image:
+            image_path = PurePath(talk.video_image.name)
+            image_video_id = image_path.stem
+
+        # Check if the video ID has changed and download a new image when necessary.
+        if video_id != image_video_id:
+            image_data = self._download_youtube_video_image(video_id)
+            talk.video_image.save(
+                name=image_data.name,
+                content=image_data,
+                save=False,
+            )
+
+    def _download_youtube_video_image(self, video_id: str) -> ContentFile:
+        image_url = self._format_youtube_video_image_url(video_id)
+
+        with requests.get(image_url, timeout=30) as image_response:
+            image_response.raise_for_status()
+            return ContentFile(
+                content=image_response.content,
+                name=f"{video_id}.jpg",
+            )
+
+    def _format_youtube_video_image_url(self, video_id):
+        return f"https://img.youtube.com/vi/{quote(video_id)}/maxresdefault.jpg"
+
 
 @admin.action(description="Update from pretalx")
 def workshop_update_from_pretalx(modeladmin, request, queryset):
@@ -319,93 +394,92 @@ def save_model(self, request, obj: Workshop, form, change: bool) -> None:
 
 @admin.register(Utility)
 class UtilityAdmin(admin.ModelAdmin):
-    empty_value_display = 'not set'
+    empty_value_display = "not set"
     list_display = [
-        'title',
-        'short_description',
-        'url',
-        'is_streamed',
+        "title",
+        "short_description",
+        "url",
+        "is_streamed",
     ]
     list_editable = [
-        'is_streamed',
+        "is_streamed",
     ]
     prepopulated_fields = {
-        'slug': ['title'],
+        "slug": ["title"],
     }
 
-
     @admin.display(description="Description", empty_value="not set")
     def short_description(self, obj: Utility) -> str | None:
         """Shorten the description for admin inline.
 
         If there is no description, return None, so the "empty_value" fires.
         """
-        return obj.description[:180] + '...' if obj.description else None
+        return obj.description[:180] + "..." if obj.description else None
 
 
 @admin.register(Room)
 class RoomAdmin(admin.ModelAdmin):
     list_display = [
-        'label',
-        'order',
-        'slug',
+        "label",
+        "order",
+        "slug",
     ]
     list_editable = [
-        'order',
+        "order",
     ]
     fields = [
-        'label',
-        'order',
-        'slug',
+        "label",
+        "order",
+        "slug",
     ]
     prepopulated_fields = {
-        'slug': ['label'],
+        "slug": ["label"],
     }
 
 
 @admin.register(Slot)
 class SlotAdmin(admin.ModelAdmin):
     list_display = [
-        'event',
-        'start',
-        'end',
-        'room',
+        "event",
+        "start",
+        "end",
+        "room",
     ]
     list_filter = [
-        'room',
+        "room",
     ]
     list_editable = [
-        'room',
-        'start',
-        'end',
+        "room",
+        "start",
+        "end",
     ]
     fieldsets = [
         (
-            'Event',
+            "Event",
             {
-                'description': 'Select only one of the following.',
-                'fields': [
-                    'talk',
-                    'workshop',
-                    'utility',
+                "description": "Select only one of the following.",
+                "fields": [
+                    "talk",
+                    "workshop",
+                    "utility",
                 ],
             },
         ),
         (
-            'Times',
+            "Times",
             {
-                'fields': [
-                    ('start', 'end'),
+                "fields": [
+                    ("start", "end"),
                 ],
             },
         ),
         (
             None,
             {
-                'fields': [
-                    'room',
+                "fields": [
+                    "room",
                 ],
             },
         ),
     ]
-    date_hierarchy = 'start'
+    date_hierarchy = "start"

program/management/commands/pretalx_sync_submissions.py

@@ -1,7 +1,6 @@
 from django.core.management.base import BaseCommand
 
-from program import pretalx
-from program import pretalx_sync
+from program import pretalx, pretalx_sync
 
 
 class Command(BaseCommand):

program/management/commands/program_generate_og_images.py

@@ -51,7 +51,8 @@ def _generate_og_images(
         """
         objects = model_type.objects.filter(is_public=True)
         self.stdout.write(
-            f"Generating OG images for {len(objects)} {model_type._meta.verbose_name_plural}"
+            f"Generating OG images for {len(objects)} "
+            f"{model_type._meta.verbose_name_plural}",
         )
         for obj in objects:
             result = generator.generate_image(

program/management/commands/program_import_schedule.py

@@ -17,9 +17,10 @@ def add_arguments(self, parser: ArgumentParser) -> None:
 
     def handle(self, xlsx: str, output: str, *args, **options) -> None:
         # Lazy imports to save a bit of memory.
-        from program.schedule_import import ScheduleImporter
         from django.core import serializers
 
+        from program.schedule_import import ScheduleImporter
+
         importer = ScheduleImporter()
         new_objects = importer.import_xlsx(xlsx)
         data = serializers.serialize("json", new_objects)

program/management/commands/program_link_og_images.py

@@ -1,16 +1,13 @@
 import pathlib
+import re
 from functools import cached_property
 from typing import Type
 
+from django.conf import settings
 from django.core.management.base import BaseCommand
 
 from program import models
 
-import re
-
-
-from django.conf import settings
-
 
 class Command(BaseCommand):
     @cached_property

program/migrations/0017_slot.py

@@ -1,7 +1,7 @@
 # Generated by Django 4.2.1 on 2023-08-28 19:37
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):

program/migrations/0018_room_alter_slot_room.py

@@ -1,7 +1,7 @@
 # Generated by Django 4.2.1 on 2023-08-28 19:46
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):

program/migrations/0019_remove_slot_content_type_remove_slot_object_id_and_more.py

@@ -1,7 +1,7 @@
 # Generated by Django 4.2.1 on 2023-08-28 20:22
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):

program/migrations/0020_room_slug.py

@@ -31,5 +31,5 @@ class Migration(migrations.Migration):
         migrations.RunPython(
             code=populate_room_slugs,
             reverse_code=migrations.RunPython.noop,
-        )
+        ),
     ]

program/migrations/0022_talk_video.py

@@ -0,0 +1,46 @@
+# Generated by Django 4.2.1 on 2023-11-01 10:05
+
+import re
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("program", "0021_alter_room_options_remove_room_floor_room_order_and_more"),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="talk",
+            name="video_id",
+        ),
+        migrations.AddField(
+            model_name="talk",
+            name="video_image",
+            field=models.ImageField(
+                blank=True, null=True, upload_to="video-images/session/"
+            ),
+        ),
+        migrations.AddField(
+            model_name="talk",
+            name="video_url",
+            field=models.CharField(
+                blank=True,
+                help_text="YouTube video URL: <code>https://www.youtube.com/watch?v=&lt;VIDEO_ID&gt;</code>. Do not include any additional parameters, such as start time or tracking (UTM) parameters.",
+                max_length=1024,
+                null=True,
+                validators=[
+                    django.core.validators.RegexValidator(
+                        code="invalid_youtube_url",
+                        message="Invalid YouTube URL format.",
+                        regex=re.compile(
+                            "^https://www\\.youtube\\.com/watch\\?v=(?P<video_id>[0-9A-Za-z_-]{11,})$"
+                        ),
+                    )
+                ],
+                verbose_name="Video URL",
+            ),
+        ),
+    ]