🩹 use argparse library for parsing CLI arguments

src/delarte/__main__.py

@@ -12,11 +12,14 @@ usage: delarte [-h|--help]                         - print this message
 import sys
 import time
 
+from pprint import pprint
+
 from . import api
 from . import hls
 from . import muxing
 from . import naming
 from . import www
+from .cli_parser import create_parser, get_args_as_list
 
 
 def fail(message, code=1):
@@ -68,7 +71,9 @@ def create_progress():
 
 def main():
     """CLI command."""
-    args = sys.argv[1:]
+    parser = create_parser()
+    args = get_args_as_list(parser)
+
     if not args or args[0] == "-h" or args[0] == "--help":
         print(__doc__)
         return 0

src/delarte/cli_parser.py

@@ -0,0 +1,42 @@
+import argparse
+
+
+def create_parser() -> argparse.ArgumentParser:
+    """return a parser for the script arguments
+
+    Returns:
+        argparse.ArgumentParser: argument parser object dedicated to get arguments from CLI call
+    """
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "url",
+        help="url of Arte movie's webpage",
+        action="store",
+        type=str,
+    )
+    parser.add_argument(
+        "-l",
+        "--languages",
+        help="one of the language code proposed by Arte",
+        required=False,
+        action="store",
+        type=str,
+        nargs="?",
+    )
+    parser.add_argument(
+        "-r",
+        "--resolution",
+        help="directory where the output files will be stored",
+        required=False,
+        action="store",
+        type=str,
+        nargs="?",
+    )
+
+    return parser
+
+
+def get_args_as_list(parser):
+    parser.parse_args()
+    args_namespace = parser.parse_args()
+    return [args_namespace.url, args_namespace.languages, args_namespace.resolution]