Refactor config file loading with decorator

Introduced ConfigFile.loader decorator to handle config file loading in CLI entrypoint. Removed manual config file loading logic from main function for improved modularity and readability.

gamdl/cli/cli.py

@@ -47,6 +47,7 @@ def make_sync(func):
 @click.help_option("-h", "--help")
 @click.version_option(__version__, "-v", "--version")
 @dataclass_click(CliConfig)
+@ConfigFile.loader
 @make_sync
 async def main(config: CliConfig):
     colorama.just_fix_windows_console()
@@ -66,10 +67,6 @@ async def main(config: CliConfig):
 
     logger.info(f"Starting Gamdl {__version__}")
 
-    if not config.no_config_file:
-        config_file = ConfigFile(config.config_path)
-        config = config_file.load()
-
     if config.use_wrapper:
         apple_music_api = await AppleMusicApi.create_from_wrapper(
             wrapper_account_url=config.wrapper_account_url,

gamdl/cli/config_file.py

@@ -1,5 +1,6 @@
 import configparser
 import typing
+from functools import wraps
 from pathlib import Path
 
 import click
@@ -151,3 +152,16 @@ class ConfigFile:
         self.add_params_default_to_config()
         self.update_params_from_config()
         return self.get_cli_config()
+
+    @staticmethod
+    def loader(func):
+        @wraps(func)
+        def wrapper(cli_config: CliConfig):
+            ctx = click.get_current_context()
+            config_path = ctx.params.get("config_path")
+            no_config_file = ctx.params.get("no_config_file")
+            if config_path and not no_config_file:
+                cli_config = ConfigFile(config_path).load()
+            return func(cli_config)
+
+        return wrapper