Subtract account bandwidth on upload, refund on delete

app/controllers/content_controller.rb

@@ -103,8 +103,14 @@ class ContentController < ApplicationController
 
   def upload_files image_uploads_hash, content_type, content_id
     image_uploads_hash.values.each do |image_data|
+      image_size_kb = File.size(image_data.tempfile.path) / 1000.0
 
-      # todo check user bandwidth
+      if current_user.upload_bandwidth_kb < image_size_kb
+        flash[:error] = "At least one of your images failed to upload because you do not have enough upload bandwidth."
+        next
+      else
+        current_user.update(upload_bandwidth_kb: current_user.upload_bandwidth_kb - image_size_kb)
+      end
 
       related_image = ImageUpload.create(
         user: current_user,

app/controllers/image_upload_controller.rb

@@ -18,13 +18,13 @@ class ImageUploadController < ApplicationController
       return
     end
 
-    reclaimed_space = image.src_file_size
+    reclaimed_space_kb = image.src_file_size / 1000.0
 
     # If the user has access to delete the image, go for it
     result = image.destroy
 
     # And credit that space back to their bandwidth
-    #todo
+    current_user.update(upload_bandwidth_kb: current_user.upload_bandwidth_kb + reclaimed_space_kb)
 
     render json: { success: result }, status: 200
   end

app/views/content/form/_panel.html.erb

@@ -5,7 +5,12 @@
       <%= render partial: 'content/form/images/edit_list', locals: { content: content } %>
     </div>
     <div>
-      <h5>Upload more images</h5>
+      <h5>
+        Upload more images
+        <small class="grey-text">
+          You have <%= Filesize.from("#{current_user.upload_bandwidth_kb}KB").pretty %> of bandwidth remaining.
+        </small>
+      </h5>
     </div>
     <div>
       <%= render partial: 'content/form/images/upload', locals: { f: f, content: content } %>