diff --git a/src/ergogen_footprint_converter/main.py b/src/ergogen_footprint_converter/main.py
index 997d2bf..8dd2418 100644
--- a/src/ergogen_footprint_converter/main.py
+++ b/src/ergogen_footprint_converter/main.py
@@ -3,9 +3,31 @@
 from argparse import ArgumentParser
 from pathlib import Path
 
+from ergogen_footprint_converter.parser import Parser
+from ergogen_footprint_converter.converter import Converter
 
-def main (args):
-    print(args)
+
+def main (args) -> None:
+    check_args(args)
+
+    in_file: Path = args["in_file"]
+    out_dir: Path = args["out"]
+
+    parser = Parser(in_file)
+    parsed = parser.parse()
+
+    converter = Converter(parsed)
+    converted = converter.convert()
+
+    write_output(converted, in_file, out_dir)
+
+def write_output (output: str, in_file: Path, out_dir: Path) -> None:
+    filename = in_file.name
+
+    with open(filename, 'w') as file:
+        file.writelines(output)
+
+def check_args(args) -> None:
     in_file: Path = args["in_file"]
     out_dir: Path = args["out"]
     if not in_file.exists():
@@ -13,8 +35,6 @@ def main (args):
     
     out_dir.mkdir(exist_ok=True)
 
-    None
-
 def parse_args():
     parser = ArgumentParser()
     parser.add_argument("in_file", type=Path)
@@ -22,7 +42,7 @@ def parse_args():
 
     return parser.parse_args()
 
-def run ():
+def run () -> None:
     args = parse_args()
     main(args)
 
diff --git a/src/ergogen_footprint_converter/parser.py b/src/ergogen_footprint_converter/parser.py
index 06dab3c..77b4e2d 100644
--- a/src/ergogen_footprint_converter/parser.py
+++ b/src/ergogen_footprint_converter/parser.py
@@ -7,3 +7,6 @@ class Parser():
     def __init__(self, input_file: Path):
         self.footprint = Footprint.from_file(input_file.absolute().__str__())
 
+    def parse(self) -> str:
+        return ""
+
diff --git a/tests/unit/test_parser.py b/tests/unit/test_parser.py
index 953fe80..404b088 100644
--- a/tests/unit/test_parser.py
+++ b/tests/unit/test_parser.py
@@ -6,5 +6,5 @@ def test_parser_filenotexists():
     with pytest.raises(Exception, match=r".*Given path is not a file.*"):
         Parser(Path("nop"))
     
-def test_parser():
+def test_parse():
     None