Restore LangBot branding on DingTalk A2UI cards

src/langbot/libs/dingtalk_api/a2ui.py

@@ -9,12 +9,40 @@ import typing
 A2UI_CATALOG_ID = 'https://dingtalk.com/card/a2ui/catalogs/public/catalog.json'
 A2UI_MESSAGE_VERSION = 'v1.0'
 A2UI_PROTOCOL_VERSION = '1.0'
+LANGBOT_LOGO_URL = 'https://langbot.app/logo-blue.png'
+LANGBOT_CARD_URL = 'https://langbot.app?utm_source=dingtalk&utm_medium=bot_card&utm_campaign=langbot'
 
 
 def binding(path: str) -> dict[str, str]:
     return {'path': path}
 
 
+def brand_components() -> list[dict[str, typing.Any]]:
+    return [
+        {
+            'id': 'langbot-brand',
+            'component': 'Row',
+            'children': ['langbot-brand-icon', 'langbot-brand-link'],
+            'align': 'center',
+            'gap': 4,
+        },
+        {
+            'id': 'langbot-brand-icon',
+            'component': 'Image',
+            'url': LANGBOT_LOGO_URL,
+            'variant': 'icon',
+            'fit': 'contain',
+            'previewEnabled': False,
+        },
+        {
+            'id': 'langbot-brand-link',
+            'component': 'Link',
+            'text': 'LangBot',
+            'action': {'functionCall': {'call': 'openUrl', 'args': {'url': LANGBOT_CARD_URL}}},
+        },
+    ]
+
+
 def serialize_messages(messages: typing.Iterable[dict | str]) -> list[str]:
     serialized = [
         message if isinstance(message, str) else json.dumps(message, ensure_ascii=False, separators=(',', ':'))
@@ -95,7 +123,7 @@ def text_card_components() -> list[dict[str, typing.Any]]:
         {
             'id': 'root',
             'component': 'Column',
-            'children': ['content'],
+            'children': ['content', 'langbot-brand'],
             'gap': 8,
         },
         {
@@ -103,6 +131,7 @@ def text_card_components() -> list[dict[str, typing.Any]]:
             'component': 'Markdown',
             'content': binding('/content'),
         },
+        *brand_components(),
     ]
 
 

src/langbot/pkg/platform/adapters/dingtalk/interaction.py

@@ -7,7 +7,7 @@ import time
 import typing
 import uuid
 
-from langbot.libs.dingtalk_api.a2ui import binding, create_surface_messages, update_surface_messages
+from langbot.libs.dingtalk_api.a2ui import brand_components, binding, create_surface_messages, update_surface_messages
 from langbot.libs.dingtalk_api.dingtalkevent import DingTalkEvent
 from langbot_plugin.api.entities.builtin.platform import events as platform_events
 
@@ -150,6 +150,8 @@ def _build_interaction_messages(
         )
         children.append(button_id)
 
+    children.append('langbot-brand')
+    components.extend(brand_components())
     components.insert(0, {'id': 'root', 'component': 'Column', 'children': children, 'gap': 12})
     return {'form': form}, components, field_types
 

src/langbot/pkg/platform/sources/dingtalk.py

@@ -1,4 +1,5 @@
 from langbot.libs.dingtalk_api.a2ui import (
+    brand_components,
     binding,
     create_surface_messages,
     create_text_card_messages,
@@ -519,6 +520,8 @@ def _dingtalk_a2ui_form(
                 ]
             )
             children.append(button_id)
+    children.append('langbot-brand')
+    components.extend(brand_components())
     return data, components