Fix storage helpers (#11697)

* Fix storage helpers

- Remove os.path reliance
- Move to standard django accessors

* Refactor rebuild_thumbnails

src/backend/InvenTree/InvenTree/helpers.py

@@ -8,6 +8,7 @@ import json
 import os.path
 import re
 from decimal import Decimal, InvalidOperation
+from pathlib import Path
 from typing import Optional, TypeVar
 from wsgiref.util import FileWrapper
 from zoneinfo import ZoneInfo, ZoneInfoNotFoundError
@@ -35,9 +36,6 @@ from InvenTree.sanitizer import (
     DEFAULT_TAGS,
 )
 
-from .setting.storages import StorageBackends
-from .settings import MEDIA_URL, STATIC_URL
-
 logger = structlog.get_logger('inventree')
 
 INT_CLIP_MAX = 0x7FFFFFFF
@@ -189,9 +187,8 @@ def getMediaUrl(
         )
     if name is not None:
         file = regenerate_imagefile(file, name)
-    if settings.STORAGE_TARGET == StorageBackends.S3:
-        return str(file.url)
-    return os.path.join(MEDIA_URL, str(file.url))
+
+    return default_storage.url(file.name)
 
 
 def regenerate_imagefile(_file, _name: str):
@@ -229,7 +226,7 @@ def image2name(img_obj: StdImageField, do_preview: bool, do_thumbnail: bool):
 
 def getStaticUrl(filename):
     """Return the qualified access path for the given file, under the static media directory."""
-    return os.path.join(STATIC_URL, str(filename))
+    return StaticFilesStorage().url(filename)
 
 
 def TestIfImage(img) -> bool:
@@ -261,8 +258,8 @@ def getBlankThumbnail():
 def checkStaticFile(*args) -> bool:
     """Check if a file exists in the static storage."""
     static_storage = StaticFilesStorage()
-    fn = os.path.join(*args)
-    return static_storage.exists(fn)
+    fn = Path(*args)
+    return static_storage.exists(str(fn))
 
 
 def getLogoImage(as_file=False, custom=True):

src/backend/InvenTree/InvenTree/management/commands/rebuild_thumbnails.py

@@ -3,8 +3,7 @@
 - May be required after importing a new dataset, for example
 """
 
-import os
-
+from django.core.files.storage import default_storage
 from django.core.management.base import BaseCommand
 from django.db.utils import OperationalError, ProgrammingError
 
@@ -35,7 +34,7 @@ class Command(BaseCommand):
                 img_paths.append(x.path)
 
         if len(img_paths) > 0:
-            if all(os.path.exists(path) for path in img_paths):
+            if all(default_storage.exists(p) for p in img_paths):
                 # All images exist - skip further work
                 return
 

src/backend/InvenTree/InvenTree/tests.py

@@ -692,13 +692,16 @@ class TestHelpers(TestCase):
             self.assertFalse(helpers.isNull(s))
 
     def testStaticUrl(self):
-        """Test static url helpers."""
+        """Test static URL helpers."""
         self.assertEqual(helpers.getStaticUrl('test.jpg'), '/static/test.jpg')
         self.assertEqual(helpers.getBlankImage(), '/static/img/blank_image.png')
         self.assertEqual(
             helpers.getBlankThumbnail(), '/static/img/blank_image.thumbnail.png'
         )
 
+        self.assertFalse(helpers.checkStaticFile('dummy', 'dir', 'test.jpg'))
+        self.assertTrue(helpers.checkStaticFile('img', 'blank_image.png'))
+
     def testMediaUrl(self):
         """Test getMediaUrl."""
         # Str should not work