diff --git a/.gitignore b/.gitignore
index 3b35dc2..d0afe9e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -114,3 +114,4 @@ dmypy.json
 .pyre/
 toxic/
 .idea/
+fuck/
diff --git a/main.py b/main.py
index d6196d5..4f9e22e 100644
--- a/main.py
+++ b/main.py
@@ -9,10 +9,22 @@ unique_old = []
 
 
 def main(in_args):
-    # reading CSV file
-    user_data = read_csv(in_args.csv_input)
-    discord_ids = user_data['AuthorID'].tolist()
 
+    if not os.path.isfile(in_args.csv_input):
+        for filename in os.listdir(in_args.csv_input):
+            file_path = os.path.join(in_args.csv_input, filename)
+            process(in_args, str(file_path))
+    else:
+        # reading CSV file
+        csv_path = in_args.csv_input
+        process(in_args, csv_path)
+
+    print("Done.")
+
+
+def process(in_args, csv_path: str):
+    user_data = read_csv(csv_path)
+    discord_ids = user_data['AuthorID'].tolist()
     # check if the output exists to add new IDs too
     if os.path.isfile(in_args.csv_output) is False:
         write_csv(["User ID"], in_args.csv_output)
@@ -20,20 +32,18 @@ def main(in_args):
         old_data = read_csv(in_args.csv_output)
         for x in old_data['User ID'].tolist():
             unique_old.append(int(x))
-
     # check for new IDs
     for user_id in discord_ids:
         int_id = int(user_id)
         print("User: ", str(int_id), end="\r", flush=True)
         if user_id not in unique_ids and user_id not in unique_old:
             unique_ids.append(user_id)
-
     # add users to the CSV
     for user_id in unique_ids:
         print("User: ", str(user_id), end="\r", flush=True)
         update_csv(user_id, in_args.csv_output)
 
-    print("Done.")
+    unique_ids.clear()
 
 
 def write_csv(fields, csv_path):