Exposed application settings to command line arguments

pyrousel/__main__.py

@@ -1,2 +1,2 @@
-from .app import Run
-Run()
+from .app import Main
+Main()

pyrousel/app.py

@@ -1,15 +1,70 @@
+import argparse
 from dataclasses import dataclass
 from .appwindow import AppWindow
 
 @dataclass
 class ApplicationSettings:
     window_width: int = 1024
     window_height: int = 1024
+    startup_model: str = None
+
+def Main() -> None:
+    args = ParseArgs()
+    if args is None:
+        exit(1)
+
+    app_settings = ApplicationSettings()
+    app_settings.window_width = args.width
+    app_settings.window_height = args.height
+    app_settings.startup_model = args.model
+
+    Run(app_settings)
+    exit(0)
 
 def Run(settings: ApplicationSettings = ApplicationSettings()) -> None:
     print('Running Pyrousel...')
+    print(f'--Window size: {settings.window_width}x{settings.window_height}')
+    print(f'--Startup model: {settings.startup_model}')
+    print('\n')
+
     app_window = AppWindow(settings.window_width, settings.window_height)
-    app_window.Init()    
+    app_window.Init()
+
+    if settings.startup_model is not None:
+        app_window.OnModelRequested(settings.startup_model)
+
     app_window.Run()
     print('Quitting Pyrousel')
 
+def ParseArgs():
+    arg_parser = argparse.ArgumentParser()
+    arg_parser.add_argument(
+        '--width',
+        type=int,
+        default=1024,
+        required=False,
+        help='window width in pixels'
+    )
+    arg_parser.add_argument(
+        '--height',
+        type=int,
+        default=1024,
+        required=False,
+        help='window height in pixels'
+    )
+    arg_parser.add_argument(
+        '--model',
+        type=str,
+        default=None,
+        required=False,
+        help='filepath to initial model file'
+    )
+
+    args = None
+    try:
+        args = arg_parser.parse_args()
+    except Exception as err:
+        err.print()
+        arg_parser.print_help()
+
+    return args

setup.py

@@ -33,7 +33,7 @@
     ],
     entry_points={
         'console_scripts': [
-            'pyrousel=pyrousel.app:Run'
+            'pyrousel=pyrousel.app:Main'
         ]
     }
 )