Update metadata_format.py

tubesync/sync/models/metadata_format.py

@@ -1 +1,75 @@
+import uuid
+from django import db
+from django.utils.translation import gettext_lazy as _
+#from .metadata import Metadata
+from . import Metadata, JSONEncoder
 
+class MetadataFormat(db.models.Model):
+    '''
+        A format from the Metadata for an indexed `Media` item.
+    '''
+    class Meta:
+        db_table = f'{Metadata._meta.db_table}_format'
+        verbose_name = _('Format from Media Metadata')
+        verbose_name_plural = _('Formats from Media Metadata')
+        unique_together = (
+            ('metadata', 'site', 'key', 'number'),
+        )
+        ordering = ['site', 'key', 'number']
+
+    uuid = db.models.UUIDField(
+        _('uuid'),
+        primary_key=True,
+        editable=False,
+        default=uuid.uuid4,
+        help_text=_('UUID of the format'),
+    )
+    metadata = db.models.ForeignKey(
+        Metadata,
+        # on_delete=models.DO_NOTHING,
+        on_delete=db.models.CASCADE,
+        related_name='format',
+        help_text=_('Metadata the format belongs to'),
+        null=False,
+    )
+    site = db.models.CharField(
+        _('site'),
+        max_length=256,
+        blank=True,
+        db_index=True,
+        null=False,
+        default='Youtube',
+        help_text=_('Site from which the format is available'),
+    )
+    key = db.models.CharField(
+        _('key'),
+        max_length=256,
+        blank=True,
+        db_index=True,
+        null=False,
+        default='',
+        help_text=_('Media identifier at the site from which this format is available'),
+    )
+    number = db.models.PositiveIntegerField(
+        _('number'),
+        blank=False,
+        null=False,
+        help_text=_('Ordering number for this format'),
+    )
+    value = db.models.JSONField(
+        _('value'),
+        encoder=JSONEncoder,
+        null=False,
+        default=dict,
+        help_text=_('JSON metadata format object'),
+    )
+
+
+    def __str__(self):
+        template = '#{:n} "{}" from {}: {}'
+        return template.format(
+            self.number,
+            self.key,
+            self.site,
+            self.value.get('format') or self.value.get('format_id'),
+        )