Keep media folder clean (#28)

* Reorg roster, portal and bookshelf media
* Extend media reorg to consists
* Delete roster and bookshelf images on delte.
   Do not delete others data that might be dedup! 
* Bump version

ram/bookshelf/migrations/0009_alter_bookimage_image.py

@@ -0,0 +1,49 @@
+# Generated by Django 4.2.6 on 2023-10-30 13:16
+
+import os
+import sys
+import shutil
+import ram.utils
+import bookshelf.models
+
+from django.db import migrations, models
+from django.conf import settings
+
+
+def move_images(apps, schema_editor):
+    sys.stdout.write("\n  Processing files. Please await...")
+    for r in bookshelf.models.BookImage.objects.all():
+        fname = os.path.basename(r.image.path)
+        new_image = bookshelf.models.book_image_upload(r, fname)
+        new_path = os.path.join(settings.MEDIA_ROOT, new_image)
+        os.makedirs(os.path.dirname(new_path), exist_ok=True)
+        try:
+            shutil.move(r.image.path, new_path)
+        except FileNotFoundError:
+            sys.stderr.write("  !! FileNotFoundError: {}\n".format(new_image))
+            pass
+        r.image.name = new_image
+        r.save()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("bookshelf", "0008_alter_author_options_alter_publisher_options"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="bookimage",
+            name="image",
+            field=models.ImageField(
+                blank=True,
+                null=True,
+                storage=ram.utils.DeduplicatedStorage,
+                upload_to=bookshelf.models.book_image_upload,
+            ),
+        ),
+        migrations.RunPython(
+            move_images,
+            reverse_code=migrations.RunPython.noop
+        ),
+    ]

ram/bookshelf/models.py

@@ -1,3 +1,5 @@
+import os
+import shutil
 from uuid import uuid4
 from django.db import models
 from django.conf import settings
@@ -70,13 +72,31 @@ class Book(models.Model):
     def get_absolute_url(self):
         return reverse("book", kwargs={"uuid": self.uuid})
 
+    def delete(self, *args, **kwargs):
+        shutil.rmtree(
+            os.path.join(
+                settings.MEDIA_ROOT, "images", "books", str(self.uuid)
+            ),
+            ignore_errors=True
+        )
+        super(Book, self).delete(*args, **kwargs)
+
+
+def book_image_upload(instance, filename):
+    return os.path.join(
+        "images",
+        "books",
+        str(instance.book.uuid),
+        filename
+    )
+
 
 class BookImage(Image):
     book = models.ForeignKey(
         Book, on_delete=models.CASCADE, related_name="image"
     )
     image = models.ImageField(
-        upload_to="images/books/",  # FIXME, find a better way to replace this
+        upload_to=book_image_upload,
         storage=DeduplicatedStorage,
         null=True,
         blank=True