Add option to delete older videos if a total size limit is reached

script.rb

@@ -12,6 +12,11 @@ OptionParser.new do |parser|
     parser.on("-f", "--feed FEED", "Feed to download videos from") do |feed|
         options[:feed]=feed
     end
+
+    parser.on("-m", "--max-storage SIZE", "Maximum bytes on disk to occupy with videos") do |maxstorage|
+        options[:maxstorage]=maxstorage
+    end
+
 end.parse!
 
 raise OptionParser::MissingArgument, "You must specify a feed (-f)" if options[:feed].nil?
@@ -38,5 +43,12 @@ open(options[:feed]) do |rss|
                       :filename => "#{video.filename}",
                       :filesize => File.size("#{video.filename}"),
                       :downloaded => DateTime.now)
+        if not options[:maxstorage].empty?
+            while videos.sum(:filesize) > options[:maxstorage].to_i
+                oldest=videos.order(:downloaded).first
+                File.delete(oldest[:filename])
+                videos.where(:id => oldest[:id]).delete
+            end
+        end
     end
 end