Allow hiding and un-hiding of screenshot by moderators

app/models/screenshot.rb

@@ -5,7 +5,7 @@ class Screenshot < ApplicationRecord
   # Default sorting:
   # - unapproved first (to see them at the top when moderating)
   # - otherwise show newest first
-  default_scope { order(approved: :asc, created_at: :desc) }
+  default_scope { order(approved: :asc, hidden: :asc, created_at: :desc) }
 
   # Shrine
   include ImageUploader::Attachment(:simage) # adds an `simage` virtual attribute
@@ -63,6 +63,16 @@ class Screenshot < ApplicationRecord
     self.save!
   end
 
+  # Hide a screenshot from the public. Moderator level can do this.
+  def hide!
+    self.hidden = true
+    self.save!
+  end
+  def unhide!
+    self.hidden = false
+    self.save!
+  end
+
   # Get the newest screenshots regardless of the package it belongs to
   def self.newest
     self.order(created_at: :desc)