add simple case and series size display

atlas/models.py

@@ -390,6 +390,8 @@ class Case(models.Model, AuthorMixin, QuestionMixin):
 
     resource = models.ManyToManyField("Resource", through="CaseResource")
 
+    total_images_series_size = models.BigIntegerField(null=True, blank=True)
+
     def get_app_name(self):
         return "atlas"
 
@@ -495,6 +497,17 @@ class Case(models.Model, AuthorMixin, QuestionMixin):
     def get_series(self):
         return self.series.all().prefetch_related("images", "examination", "plane")
 
+    def get_total_series_images_size(self, refresh=False):
+        if self.total_images_series_size is not None and not refresh:
+            return self.total_images_series_size
+
+        series = self.series.all()
+        size = sum(s.get_total_image_size(refresh=refresh) for s in series)
+
+        return size
+
+
+
 
 def extract_image_dicom_json_from_ds(ds, url, image_index):
     to_keep = [