Add support for external assist (#16556)

* Add support for external assist

* Update hui-root.ts

src/dialogs/voice-command-dialog/show-ha-voice-command-dialog.ts

@@ -1,8 +1,18 @@
 import { fireEvent } from "../../common/dom/fire_event";
+import { HomeAssistant } from "../../types";
 
 const loadVoiceCommandDialog = () => import("./ha-voice-command-dialog");
 
-export const showVoiceCommandDialog = (element: HTMLElement): void => {
+export const showVoiceCommandDialog = (
+  element: HTMLElement,
+  hass: HomeAssistant
+): void => {
+  if (hass.auth.external?.config.hasAssist) {
+    hass.auth.external!.fireMessage({
+      type: "assist/show",
+    });
+    return;
+  }
   fireEvent(element, "show-dialog", {
     dialogTag: "ha-voice-command-dialog",
     dialogImport: loadVoiceCommandDialog,

src/external_app/external_messaging.ts

@@ -95,12 +95,21 @@ interface EMOutgoingMessageSidebarShow extends EMMessage {
   type: "sidebar/show";
 }
 
+interface EMOutgoingMessageAssistShow extends EMMessage {
+  type: "assist/show";
+  payload?: {
+    pipeline_id?: string;
+    start_listening?: boolean;
+  };
+}
+
 type EMOutgoingMessageWithoutAnswer =
   | EMOutgoingMessageHaptic
   | EMOutgoingMessageConnectionStatus
   | EMOutgoingMessageAppConfiguration
   | EMOutgoingMessageTagWrite
   | EMOutgoingMessageSidebarShow
+  | EMOutgoingMessageAssistShow
   | EMOutgoingMessageExoplayerPlayHLS
   | EMOutgoingMessageExoplayerResize
   | EMOutgoingMessageExoplayerStop
@@ -152,6 +161,7 @@ export interface ExternalConfig {
   canWriteTag: boolean;
   hasExoPlayer: boolean;
   canCommissionMatter: boolean;
+  hasAssist: boolean;
 }
 
 export class ExternalMessaging {

src/panels/lovelace/hui-root.ts

@@ -567,7 +567,7 @@ class HUIRoot extends LitElement {
     if (searchParams.edit === "1") {
       this.lovelace!.setEditMode(true);
     } else if (searchParams.conversation === "1") {
-      showVoiceCommandDialog(this);
+      showVoiceCommandDialog(this, this.hass);
       window.history.replaceState(
         null,
         "",
@@ -793,7 +793,7 @@ class HUIRoot extends LitElement {
   }
 
   private _showVoiceCommandDialog(): void {
-    showVoiceCommandDialog(this);
+    showVoiceCommandDialog(this, this.hass);
   }
 
   private _handleEnableEditMode(ev: CustomEvent<RequestSelectedDetail>): void {

src/panels/shopping-list/ha-panel-shopping-list.ts

@@ -76,7 +76,7 @@ class PanelShoppingList extends LitElement {
   }
 
   private _showVoiceCommandDialog(): void {
-    showVoiceCommandDialog(this);
+    showVoiceCommandDialog(this, this.hass);
   }
 
   static get styles(): CSSResultGroup {