Added support for txt files and support for a config file

.gitignore

@@ -4,3 +4,4 @@
 /.shards/
 *.dwarf
 config.txt
+test.txt

src/rete.cr

@@ -1,22 +1,87 @@
+require "option_parser"
 require "http/client"
 require "validator"
 
+def checkUrlFromFile(content) # Sorry for the crappy method name.
   repeat = 0
+  working = 0
+  notWorking = 0
+  exist = true
+  config = File.read("config.txt")
 
+  urls = content.split("\n")
+
+  while repeat < urls.size
+    if Valid.url? urls[repeat]
+      begin
+        response = HTTP::Client.get(urls[repeat])
+        if config.includes?(response.status_code.to_s)
+          puts "#{urls[repeat]} is a valid URL and works. Status code: #{response.status_code}"
+          working += 1
+        else
+          puts "#{urls[repeat]} is a valid URL but does not work. Status Code: #{response.status_code}"
+          notWorking += 1
+        end
+      rescue Socket::Addrinfo::Error
+        puts "#{urls[repeat]} is a valid URL but does not exist."
+        notWorking += 1
+      end
+    else
+      puts "#{urls[repeat]} is not a valid URL"
+      notWorking += 1
+    end
+    repeat += 1
+  end
+  
+  puts "=============================="
+  puts "Finished testing urls."
+  puts "A total of #{repeat} url(s) were tested."
+  puts "#{working}/#{repeat} url(s) were working."
+  puts "#{notWorking}/#{repeat} url(s) were not working."
+  exit 0
+end
+
+OptionParser.parse do |parser|
+  parser.banner = "Usage: rete [arguments] [urls]"
+  parser.on("-f FILE", "--file=FILE", "Checks all urls in a txt file.") { |file|
+  urls = File.read(file)
+  checkUrlFromFile urls
+  exit 0}
+  parser.on("-h", "--help", "Show this help") do
+    puts parser
+    exit
+  end
+  parser.invalid_option do |flag|
+    STDERR.puts "ERROR: #{flag} is not a valid option."
+    STDERR.puts parser
+    exit(1)
+  end
+end
+
+repeat = 0
+working = 0
+notWorking = 0
 config = File.read("config.txt")
 
 while repeat < ARGV.size
   if Valid.url? ARGV[repeat]
     response = HTTP::Client.get(ARGV[repeat])
     if config.includes?(response.status_code.to_s)
-      puts "#{ARGV[repeat]} is a valid URL and works. #{response.status_code}"
+      puts "#{ARGV[repeat]} is a valid URL and works. Status code: #{response.status_code}"
+      working += 1
     else
-      puts "#{ARGV[repeat]} is a valid URL but does not work. #{response.status_code}"
+      puts "#{ARGV[repeat]} is a valid URL but does not work. Status Code: #{response.status_code}"
+      notWorking += 1
     end
   elsif
     puts "#{ARGV[repeat]} is not a valid URL"
+    notWorking += 1
   end
 repeat += 1
 end
 
-puts "=======================\nFinished"
+  puts "=============================="
+  puts "Finished testing urls."
+  puts "A total of #{repeat} url(s) were tested."
+  puts "#{working}/#{repeat} url(s) were working."
+  puts "#{notWorking}/#{repeat} url(s) were not working."