Patch/default thumbnail

src/apps/video/conf.py

@@ -164,7 +164,7 @@ class VideoConfig(BaseSettings):
     )
 
     # --- Media Defaults ---
-    default_thumbnail: str = Field(
+    default_thumbnail: str | None = Field(
         default=defaults.DEFAULT_THUMBNAIL,
         description="Path to the default video thumbnail.",
     )

src/apps/video/models/Video.py

@@ -247,7 +247,13 @@ def thumbnail_url(self):
         """Returns the thumbnail URL or the default one if it doesn't exist."""
         if self.thumbnail and hasattr(self.thumbnail, "url"):
             return self.thumbnail.url
-        return video_settings.default_thumbnail
+
+        if self.overview and hasattr(self.overview, "url"):
+            return self.overview.url
+
+        from django.templatetags.static import static
+
+        return static(video_settings.default_thumbnail or "img/default_thumbnail.png")
 
     def get_tag_list(self):
         """Returns the tags as a comma-separated string."""

src/apps/video/serializers/VideoSerializer.py

@@ -4,6 +4,7 @@
 
 from django.contrib.auth import get_user_model
 from rest_framework import serializers
+from drf_spectacular.utils import extend_schema_field
 from src.apps.video.models import Video, Type, Discipline
 from .SubtitleSerializer import SubtitleSerializer
 from django.contrib.auth.hashers import make_password
@@ -39,7 +40,7 @@ class VideoSerializer(serializers.ModelSerializer):
     created_at = serializers.DateTimeField(read_only=True)
     updated_at = serializers.DateTimeField(read_only=True)
     date_to_delete = serializers.DateField(required=False, allow_null=True)
-    thumbnail_url = serializers.ReadOnlyField()
+    thumbnail_url = serializers.SerializerMethodField()
     type_id = serializers.PrimaryKeyRelatedField(
         queryset=Type.objects.all(), source="type", write_only=True, required=False
     )
@@ -112,6 +113,19 @@ def get_encodings(self, obj):
         """Returns a list of available encoded resolutions (e.g., ['1080p', '720p'])."""
         return [enc.resolution for enc in obj.encodings.all()]
 
+    @extend_schema_field(serializers.URLField(allow_null=True))
+    def get_thumbnail_url(self, obj):
+        """Returns the absolute URL of the video thumbnail."""
+        request = self.context.get("request")
+        url = obj.thumbnail_url
+        if (
+            url
+            and request
+            and not (url.startswith("http://") or url.startswith("https://"))
+        ):
+            return request.build_absolute_uri(url)
+        return url
+
     def validate_password(self, value):
         """Hashes the password if it is provided."""
         if value:

src/config/defaults/video.py

@@ -45,7 +45,7 @@
     "TITLE_ETB": "University name",
 }
 
-DEFAULT_THUMBNAIL = "img/default.svg"
+DEFAULT_THUMBNAIL = "img/default_thumbnail.png"
 DEFAULT_TYPE_ID = 1
 
 ACCOMMODATION_YEARS = {}