Add support for specifying the integrations manifest/list fetches (#71982)

* Add support for specifying the integrations manifest/list fetches

See https://github.com/home-assistant/core/pull/71979 for
the motovation

* Update homeassistant/components/websocket_api/commands.py

Co-authored-by: Paulus Schoutsen <paulus@home-assistant.io>

Co-authored-by: Paulus Schoutsen <paulus@home-assistant.io>

homeassistant/components/websocket_api/commands.py

@@ -359,15 +359,19 @@ def handle_get_config(
     connection.send_result(msg["id"], hass.config.as_dict())
 
 
-@decorators.websocket_command({vol.Required("type"): "manifest/list"})
+@decorators.websocket_command(
+    {vol.Required("type"): "manifest/list", vol.Optional("integrations"): [str]}
+)
 @decorators.async_response
 async def handle_manifest_list(
     hass: HomeAssistant, connection: ActiveConnection, msg: dict[str, Any]
 ) -> None:
     """Handle integrations command."""
-    loaded_integrations = async_get_loaded_integrations(hass)
+    wanted_integrations = msg.get("integrations")
+    if wanted_integrations is None:
+        wanted_integrations = async_get_loaded_integrations(hass)
     integrations = await asyncio.gather(
-        *(async_get_integration(hass, domain) for domain in loaded_integrations)
+        *(async_get_integration(hass, domain) for domain in wanted_integrations)
     )
     connection.send_result(
         msg["id"], [integration.manifest for integration in integrations]

tests/components/websocket_api/test_commands.py

@@ -1351,6 +1351,25 @@ async def test_manifest_list(hass, websocket_client):
     ]
 
 
+async def test_manifest_list_specific_integrations(hass, websocket_client):
+    """Test loading manifests for specific integrations."""
+    websocket_api = await async_get_integration(hass, "websocket_api")
+
+    await websocket_client.send_json(
+        {"id": 5, "type": "manifest/list", "integrations": ["hue", "websocket_api"]}
+    )
+    hue = await async_get_integration(hass, "hue")
+
+    msg = await websocket_client.receive_json()
+    assert msg["id"] == 5
+    assert msg["type"] == const.TYPE_RESULT
+    assert msg["success"]
+    assert sorted(msg["result"], key=lambda manifest: manifest["domain"]) == [
+        hue.manifest,
+        websocket_api.manifest,
+    ]
+
+
 async def test_manifest_get(hass, websocket_client):
     """Test getting a manifest."""
     hue = await async_get_integration(hass, "hue")