Modularize main logic in the app package

Wrote some unit tests to verify proper dispatching of the profile and
server handling.

src/app/logic/__init__.py

@@ -0,0 +1 @@
+from . import config, main, sonarr

src/app/logic/main.py

@@ -0,0 +1,25 @@
+from pathlib import Path
+
+from app.logic import sonarr, config
+from app.cmd import setup_and_parse_args
+from app.logger import Logger
+from app.trash_error import TrashError
+
+# --------------------------------------------------------------------------------------------------
+def main(root_directory):
+    args = setup_and_parse_args()
+    logger = Logger(args)
+
+    config.load_config(args, logger, root_directory)
+
+    subcommand_handlers = {
+        ('sonarr', 'profile'): sonarr.process_profile,
+        ('sonarr', 'quality'): sonarr.process_quality,
+    }
+
+    server_name = args.type.split(':')[0]
+
+    try:
+        subcommand_handlers[server_name, args.subcommand](args, logger)
+    except KeyError:
+        raise TrashError(f'{args.subcommand} support in {server_name} is not implemented yet')

src/tests/logic/test_main.py

@@ -0,0 +1,20 @@
+import sys
+from app.logic import main
+
+def test_main_sonarr_profile(mocker):
+    test_args = ['trash.py', 'profile', 'sonarr:anime']
+    mock_processor = mocker.patch('app.logic.sonarr.process_profile')
+    mocker.patch.object(sys, 'argv', test_args)
+
+    main.main()
+
+    mock_processor.assert_called_once()
+
+def test_main_sonarr_quality(mocker):
+    test_args = ['trash.py', 'quality', 'sonarr:anime']
+    mock_processor = mocker.patch('app.logic.sonarr.process_quality')
+    mocker.patch.object(sys, 'argv', test_args)
+
+    main.main()
+
+    mock_processor.assert_called_once()

src/trash.py

@@ -1,33 +1,12 @@
 from pathlib import Path
 
-from app.logic import sonarr, config
-from app.cmd import setup_and_parse_args
-from app.logger import Logger
+from app.logic.main import main
 from app.trash_error import TrashError
 
-# --------------------------------------------------------------------------------------------------
-def main():
-    args = setup_and_parse_args()
-    logger = Logger(args)
-
-    config.load_config(args, logger, Path(__file__).parent)
-
-    if args.subcommand == 'profile':
-        if args.type.startswith('sonarr:'):
-            sonarr.process_profile(args, logger)
-        elif args.type.startswith('radarr:'):
-            raise TrashError('Radarr guide support is not implemented yet')
-
-    elif args.subcommand == 'quality':
-        if args.type.startswith('sonarr:'):
-            sonarr.process_quality(args, logger)
-        elif args.type.startswith('radarr:'):
-            raise TrashError('Radarr quality support is not implemented yet')
-
 # --------------------------------------------------------------------------------------------------
 if __name__ == '__main__':
     try:
-        main()
+        main(Path(__file__).parent)
     except TrashError as e:
         print(f'ERROR: {e}')
         exit(1)