decorators for instancem, project and service commands

kiwi_scp/misc.py

@@ -1,6 +1,47 @@
-from typing import Any, Type
+from typing import Any, Type, List, Callable
 
+import attr
 import click
+from click.decorators import FC
+
+
+@attr.s
+class _MultiDecorator:
+    options: List[Callable[[FC], FC]] = attr.ib(factory=list)
+
+    def __call__(self, target: FC):
+        for option in reversed(self.options):
+            target = option(target)
+
+        return target
+
+
+_instance_args = []
+
+instance_command = _MultiDecorator(_instance_args)
+
+_project_args = [
+    *_instance_args,
+    click.argument(
+        "project",
+        required=False,
+        type=click.Path(exists=True),
+        default=".",
+    ),
+]
+
+project_command = _MultiDecorator(_project_args)
+
+_service_args = [
+    *_project_args,
+    click.argument(
+        "service",
+        required=False,
+        type=str,
+    ),
+]
+
+service_command = _MultiDecorator(_service_args)
 
 
 def user_query(description: str, default: Any, cast_to: Type[Any] = str):