feat: Add ComponentLimits and EmbedLimits classes for constraint defini…

CHANGELOG.md

@@ -14,6 +14,8 @@ These changes are available on the `master` branch, but have not yet been releas
 
 - Support for **Python 3.14**.
   ([#2948](https://github.com/Pycord-Development/pycord/pull/2948))
+- Added `ComponentLimits` and `EmbedLimits` enums for Discord API constraints.
+  ([#3217](https://github.com/Pycord-Development/pycord/pull/3217))
 
 ### Changed
 

discord/components.py

@@ -32,6 +32,7 @@
 from .enums import (
     ButtonStyle,
     ChannelType,
+    ComponentLimits,
     ComponentType,
     InputTextStyle,
     SelectDefaultValueType,
@@ -724,14 +725,26 @@ def __init__(
         emoji: str | GuildEmoji | AppEmoji | PartialEmoji | None = None,
         default: bool = False,
     ) -> None:
-        if len(label) > 100:
-            raise ValueError("label must be 100 characters or fewer")
+        if len(label) > ComponentLimits.select_option_label_max.value:
+            raise ValueError(
+                f"label must be {ComponentLimits.select_option_label_max.value} characters or fewer"
+            )
 
-        if value is not MISSING and len(value) > 100:
-            raise ValueError("value must be 100 characters or fewer")
+        if (
+            value is not MISSING
+            and len(value) > ComponentLimits.select_option_value_max.value
+        ):
+            raise ValueError(
+                f"value must be {ComponentLimits.select_option_value_max.value} characters or fewer"
+            )
 
-        if description is not None and len(description) > 100:
-            raise ValueError("description must be 100 characters or fewer")
+        if (
+            description is not None
+            and len(description) > ComponentLimits.select_option_description_max.value
+        ):
+            raise ValueError(
+                f"description must be {ComponentLimits.select_option_description_max.value} characters or fewer"
+            )
 
         self.label = label
         self.value = label if value is MISSING else value
@@ -990,7 +1003,7 @@ class Thumbnail(Component):
     media: :class:`UnfurledMediaItem`
         The component's underlying media object.
     description: Optional[:class:`str`]
-        The thumbnail's description, up to 1024 characters.
+        The thumbnail's description, up to 256 characters.
     spoiler: Optional[:class:`bool`]
         Whether the thumbnail has the spoiler overlay.
     """
@@ -1039,7 +1052,7 @@ class MediaGalleryItem:
     url: :class:`str`
         The URL of this gallery item. This can either be an arbitrary URL or an ``attachment://`` URL to work with local files.
     description: Optional[:class:`str`]
-        The gallery item's description, up to 1024 characters.
+        The gallery item's description, up to 256 characters.
     spoiler: Optional[:class:`bool`]
         Whether the gallery item is a spoiler.
     """
@@ -1527,14 +1540,26 @@ def __init__(
         description: str | None = None,
         default: bool = False,
     ) -> None:
-        if len(label) > 100:
-            raise ValueError("label must be 100 characters or fewer")
+        if len(label) > ComponentLimits.select_option_label_max.value:
+            raise ValueError(
+                f"label must be {ComponentLimits.select_option_label_max.value} characters or fewer"
+            )
 
-        if value is not MISSING and len(value) > 100:
-            raise ValueError("value must be 100 characters or fewer")
+        if (
+            value is not MISSING
+            and len(value) > ComponentLimits.select_option_value_max.value
+        ):
+            raise ValueError(
+                f"value must be {ComponentLimits.select_option_value_max.value} characters or fewer"
+            )
 
-        if description is not None and len(description) > 100:
-            raise ValueError("description must be 100 characters or fewer")
+        if (
+            description is not None
+            and len(description) > ComponentLimits.select_option_description_max.value
+        ):
+            raise ValueError(
+                f"description must be {ComponentLimits.select_option_description_max.value} characters or fewer"
+            )
 
         self.label = label
         self.value = label if value is MISSING else value
@@ -1687,14 +1712,26 @@ def __init__(
         description: str | None = None,
         default: bool = False,
     ) -> None:
-        if len(label) > 100:
-            raise ValueError("label must be 100 characters or fewer")
+        if len(label) > ComponentLimits.select_option_label_max.value:
+            raise ValueError(
+                f"label must be {ComponentLimits.select_option_label_max.value} characters or fewer"
+            )
 
-        if value is not MISSING and len(value) > 100:
-            raise ValueError("value must be 100 characters or fewer")
+        if (
+            value is not MISSING
+            and len(value) > ComponentLimits.select_option_value_max.value
+        ):
+            raise ValueError(
+                f"value must be {ComponentLimits.select_option_value_max.value} characters or fewer"
+            )
 
-        if description is not None and len(description) > 100:
-            raise ValueError("description must be 100 characters or fewer")
+        if (
+            description is not None
+            and len(description) > ComponentLimits.select_option_description_max.value
+        ):
+            raise ValueError(
+                f"description must be {ComponentLimits.select_option_description_max.value} characters or fewer"
+            )
 
         self.label = label
         self.value = label if value is MISSING else value

discord/enums.py

@@ -88,6 +88,8 @@
     "SelectDefaultValueType",
     "ApplicationEventWebhookStatus",
     "InviteTargetUsersJobStatusCode",
+    "ComponentLimits",
+    "EmbedLimits",
 )
 
 
@@ -96,21 +98,17 @@ def _create_value_cls(name, comparable):
     cls.__repr__ = lambda self: f"<{name}.{self.name}: {self.value!r}>"
     cls.__str__ = lambda self: f"{name}.{self.name}"
     if comparable:
-        cls.__le__ = (
-            lambda self, other: isinstance(other, self.__class__)
-            and self.value <= other.value
+        cls.__le__ = lambda self, other: (
+            isinstance(other, self.__class__) and self.value <= other.value
         )
-        cls.__ge__ = (
-            lambda self, other: isinstance(other, self.__class__)
-            and self.value >= other.value
+        cls.__ge__ = lambda self, other: (
+            isinstance(other, self.__class__) and self.value >= other.value
         )
-        cls.__lt__ = (
-            lambda self, other: isinstance(other, self.__class__)
-            and self.value < other.value
+        cls.__lt__ = lambda self, other: (
+            isinstance(other, self.__class__) and self.value < other.value
         )
-        cls.__gt__ = (
-            lambda self, other: isinstance(other, self.__class__)
-            and self.value > other.value
+        cls.__gt__ = lambda self, other: (
+            isinstance(other, self.__class__) and self.value > other.value
         )
     return cls
 
@@ -1212,6 +1210,106 @@ class InviteTargetUsersJobStatusCode(Enum):
     failed = 3
 
 
+class ComponentLimits(Enum):
+    # View constraints
+    view_children_max = 40
+
+    # ActionRow constraints
+    action_row_children_max = 5
+
+    # Button constraints
+    button_label_max = 80
+
+    # Container constraints
+    container_children_max = float("inf")  # No limit
+
+    # MediaGallery constraints
+    media_gallery_items_min = 1
+    media_gallery_items_max = 10
+
+    # MediaGalleryItem constraints
+    media_gallery_item_description_max = 256
+
+    # Select constraints
+    select_placeholder_max = 150
+    select_min_value_min = 0
+    select_min_value_max = 25
+    select_max_value_min = 1
+    select_max_value_max = 25
+    select_options_max = 25
+    select_default_values_max = 25
+
+    # Select option constraints
+    select_option_label_max = 100
+    select_option_value_max = 100
+    select_option_description_max = 100
+
+    # Section constraints
+    section_accessory_max = 1
+    section_children_min = 1
+    section_children_max = 3
+
+    # TextInput constraints
+    text_input_max_count = 5
+    text_input_label_max = 45
+    text_input_placeholder_max = 100
+    text_input_min_length_min = 0
+    text_input_min_length_max = 4000
+    text_input_max_length_min = 1
+    text_input_max_length_max = 4000
+    text_input_value_max = 4000
+
+    # TextDisplay constraints
+    text_display_content_max = 4000
+
+    # Thumbnail constraints
+    thumbnail_description_max = 256
+
+    # Custom ID constraints
+    custom_id_min = 1
+    custom_id_max = 100
+
+    # RadioGroup constraints
+    radio_options_max = 10
+
+    # CheckboxGroup constraints
+    checkbox_options_max = 10
+    checkbox_min_values_min = 0
+    checkbox_min_values_max = 10
+    checkbox_max_values_min = 1
+    checkbox_max_values_max = 10
+
+    # FileUpload constraints
+    file_upload_min_files = 0
+    file_upload_max_files = 10
+
+    # Modal constraints
+    modal_title_max = 45
+    modal_rows_max = 5
+
+
+class EmbedLimits(Enum):
+    # Embed field constraints
+    fields_max = 25
+
+    # Field title/name constraints
+    field_name_max = 256
+
+    # Field value constraints
+    field_value_max = 1024
+
+    # Embed description constraints
+    description_max = 4096
+
+    # Embed footer constraints
+    footer_text_max = 2048
+
+    # Embed author constraints
+    author_name_max = 256
+    title_max = 256
+    total_max = 6000
+
+
 T = TypeVar("T")
 
 

discord/ui/button.py

@@ -30,7 +30,7 @@
 from typing import TYPE_CHECKING, Callable, TypeVar
 
 from ..components import Button as ButtonComponent
-from ..enums import ButtonStyle, ComponentType
+from ..enums import ButtonStyle, ComponentLimits, ComponentType
 from ..partial_emoji import PartialEmoji, _EmojiTag
 from .item import ItemCallbackType, ViewItem
 
@@ -113,10 +113,17 @@ def __init__(
         self._row: int | None = None
         self._rendered_row: int | None = None
         super().__init__()
-        if label and len(str(label)) > 80:
-            raise ValueError("label must be 80 characters or fewer")
-        if custom_id is not None and len(str(custom_id)) > 100:
-            raise ValueError("custom_id must be 100 characters or fewer")
+        if label and len(str(label)) > ComponentLimits.button_label_max.value:
+            raise ValueError(
+                f"label must be {ComponentLimits.button_label_max.value} characters or fewer"
+            )
+        if (
+            custom_id is not None
+            and len(str(custom_id)) > ComponentLimits.custom_id_max.value
+        ):
+            raise ValueError(
+                f"custom_id must be {ComponentLimits.custom_id_max.value} characters or fewer"
+            )
         if custom_id is not None and url is not None:
             raise TypeError("cannot mix both url and custom_id with Button")
         if sku_id is not None and url is not None:
@@ -206,8 +213,10 @@ def custom_id(self) -> str | None:
     def custom_id(self, value: str | None):
         if value is not None and not isinstance(value, str):
             raise TypeError("custom_id must be None or str")
-        if value and len(value) > 100:
-            raise ValueError("custom_id must be 100 characters or fewer")
+        if value and len(value) > ComponentLimits.custom_id_max.value:
+            raise ValueError(
+                f"custom_id must be {ComponentLimits.custom_id_max.value} characters or fewer"
+            )
         self.underlying.custom_id = value
         self._provided_custom_id = value is not None
 
@@ -238,8 +247,10 @@ def label(self) -> str | None:
 
     @label.setter
     def label(self, value: str | None):
-        if value and len(str(value)) > 80:
-            raise ValueError("label must be 80 characters or fewer")
+        if value and len(str(value)) > ComponentLimits.button_label_max.value:
+            raise ValueError(
+                f"label must be {ComponentLimits.button_label_max.value} characters or fewer"
+            )
         self.underlying.label = str(value) if value is not None else value
 
     @property

discord/ui/checkbox.py

@@ -28,7 +28,7 @@
 from typing import TYPE_CHECKING
 
 from ..components import Checkbox as CheckboxComponent
-from ..enums import ComponentType
+from ..enums import ComponentLimits, ComponentType
 from .item import ModalItem
 
 __all__ = ("Checkbox",)
@@ -105,8 +105,10 @@ def custom_id(self) -> str:
     def custom_id(self, value: str):
         if not isinstance(value, str):
             raise TypeError(f"custom_id must be str not {value.__class__.__name__}")
-        if len(value) > 100:
-            raise ValueError("custom_id must be 100 characters or fewer")
+        if len(value) > ComponentLimits.custom_id_max.value:
+            raise ValueError(
+                f"custom_id must be {ComponentLimits.custom_id_max.value} characters or fewer"
+            )
         self.underlying.custom_id = value
 
     @property