Backup model

app/models/backup.rb

@@ -0,0 +1,37 @@
+class Backup
+  include UrlHelper
+  include ActiveModel::SerializerSupport
+
+  attr_reader :filename, :size, :path, :link
+
+  def initialize(filename)
+    @filename = filename
+    @path = File.join(Backup.base_directory, filename)
+    @link = schemaless "#{Discourse.base_url}/admin/backups/#{filename}"
+    @size = File.size(@path)
+  end
+
+  def self.all
+    backups = Dir.glob(File.join(Backup.base_directory, "*.tar.gz"))
+    backups.sort.reverse.map { |backup| Backup.new(File.basename(backup)) }
+  end
+
+  def self.[](filename)
+    path = File.join(Backup.base_directory, filename)
+    if File.exists?(path)
+      Backup.new(filename)
+    else
+      nil
+    end
+  end
+
+  def self.remove(filename)
+    path = File.join(Backup.base_directory, filename)
+    File.delete(path) if File.exists?(path)
+  end
+
+  def self.base_directory
+    @base_directory ||= File.join(Rails.root, "public", "backups", RailsMultisite::ConnectionManagement.current_db)
+  end
+
+end