feedback from review

Signed-off-by: Blake <[email protected]>

Author: blaketastic2

flytekit/interaction/click_types.py

@@ -8,6 +8,7 @@
 import os
 import pathlib
 import sys
+import types
 import typing
 import typing as t
 from typing import cast, get_args
@@ -264,27 +265,6 @@ def convert(
         return self._datetime_from_format(value, param, ctx)
 
 
-class DateType(DateTimeType):
-    """
-    A specialized type for handling date types that extends DateTimeType but returns date objects.
-    """
-
-    def convert(
-        self, value: typing.Any, param: typing.Optional[click.Parameter], ctx: typing.Optional[click.Context]
-    ) -> typing.Any:
-        if isinstance(value, ArtifactQuery):
-            return value
-
-        # First convert using the parent DateTime logic
-        dt_value = super().convert(value, param, ctx)
-
-        # Then convert to date if it's a datetime object
-        if isinstance(dt_value, datetime.datetime):
-            return dt_value.date()
-
-        return dt_value
-
-
 class DurationParamType(click.ParamType):
     name = "[1:24 | :22 | 1 minute | 10 days | ...]"
 
@@ -540,11 +520,7 @@ def literal_type_to_click_type(lt: LiteralType, python_type: typing.Type) -> cli
         for i in range(len(lt.union_type.variants)):
             variant = lt.union_type.variants[i]
             variant_python_type = typing.get_args(python_type)[i]
-            # Special handling for datetime.date in union types
-            if variant_python_type is datetime.date:
-                ct = DateType()
-            else:
-                ct = literal_type_to_click_type(variant, variant_python_type)
+            ct = literal_type_to_click_type(variant, variant_python_type)
             cts.append(ct)
 
         return UnionParamType(cts)
@@ -585,7 +561,14 @@ def convert(
             return value
         try:
             # If the expected Python type is datetime.date, adjust the value to date
-            if self._python_type is datetime.date and isinstance(value, datetime.datetime):
+            is_union = typing.get_origin(self._python_type) in (
+                typing.Union,
+                types.UnionType,
+            )
+            args = typing.get_args(self._python_type)
+            is_date_type = (is_union and datetime.date in args) or self._python_type is datetime.date
+
+            if is_date_type and isinstance(value, datetime.datetime):
                 # Click produces datetime, so converting to date to avoid type mismatch error
                 value = value.date()
             # If the input matches the default value in the launch plan, serialization can be skipped.