diff --git a/main.rb b/main.rb
index c920f57..0e96098 100644
--- a/main.rb
+++ b/main.rb
@@ -1,7 +1,6 @@
 # frozen_string_literal: true
 
 require 'date'
-require 'set'
 
 logfile = File.open("teambuilder.pt.log")
 data = logfile.read
@@ -22,11 +21,13 @@ def get_line_date(line)
   Date.parse(match.gsub("[", "").gsub("]", ""))
 end
 
+# Gets the HTTP status code of the given log line
 def get_line_code(line)
   pattern = /\s(\d{3})\s/
   line.match(pattern)[1] if line.match(pattern)
 end
 
+# Gets the user agent of the given log line
 def get_line_ua(line)
   pattern = /"([^"]*)"$/
   user_agent = line.match(pattern)[0] if line.match(pattern)
@@ -45,32 +46,25 @@ def times_appeared_single(ips, ip_to_check)
   counter
 end
 
+# Returns all unique IPs in a given list of IP addresses with duplicates
 def sort_unique_ip(ips)
 
-  # Hash para rastrear IPs únicos
   seen_ips = {}
-
-  # Array para armazenar IPs únicos
   unique_ips = []
 
-  # Itera sobre cada IP no array
   ips.each do |ip|
-    # Verifica se o IP não está no hash
     unless seen_ips[ip]
-      # Adiciona o IP ao array de IPs únicos
       unique_ips << ip
-      # Marca o IP como visto no hash
       seen_ips[ip] = true
     end
   end
   unique_ips
 end
 
-
-
 visit_counter = {}
-
+client_errors = {}
 all_ips = []
+
 lines.each do | line |
   all_ips << get_line_ip(line)
 end
@@ -81,6 +75,11 @@ puts("Houve um total de #{unique_ips.length} visitas registas ao nosso site.")
 
 unique_ips.each do |ip|
   visit_counter[ip] = times_appeared_single(all_ips, ip)
-
   puts("O IP #{ip} contactou o nosso site #{times_appeared_single(all_ips, ip)} vezes.")
 end
+
+lines.each do |line|
+  cur_ip = get_line_ip(line)
+
+  client_errors[cur_ip]
+end
diff --git a/utils/http_codes.rb b/utils/http_codes.rb
new file mode 100644
index 0000000..35be317
--- /dev/null
+++ b/utils/http_codes.rb
@@ -0,0 +1,12 @@
+HTTP_CLIENT_ERROR_RANGE = 400..499
+HTTP_SERVER_ERROR_RANGE = 500..599
+HTTP_INFORMATIONAL_RANGE = 100..199
+HTTP_SUCCESS_RANGE = 200..299
+
+def is_client_err?(code)
+  HTTP_CLIENT_ERROR_RANGE === code
+end
+
+def is_server_err?(code)
+
+end
\ No newline at end of file