Handle options with optparser

script.rb

@@ -5,13 +5,16 @@ require 'open-uri'
 require 'youtube-dl'
 require 'sequel'
 require 'date'
+require 'optparse'
 
-if ARGV.empty?
+options={}
-    puts "Please specify the URL of the feed as a parameter"
+OptionParser.new do |parser|
-    exit
+    parser.on("-f", "--feed FEED", "Feed to download videos from") do |feed|
-end
+        options[:feed]=feed
+    end
+end.parse!
 
-url=ARGV[0]
+raise OptionParser::MissingArgument, "You must specify a feed (-f)" if options[:feed].nil?
 
 DB = Sequel.connect('sqlite://videos.db')
 DB.create_table? :videos do
@@ -24,7 +27,7 @@ end
 
 videos=DB[:videos]
 
-open(url) do |rss|
+open(options[:feed]) do |rss|
     feed=RSS::Parser.parse(rss)
     feed.items.each do |item|
         video=YoutubeDL.download "#{item.link}"