Add support for my links to create a helper config entry

src/panels/config/helpers/dialog-helper-detail.ts

@@ -66,7 +66,7 @@ export class DialogHelperDetail extends LitElement {
 
   public async showDialog(params: ShowDialogHelperDetailParams): Promise<void> {
     this._params = params;
-    this._domain = undefined;
+    this._domain = params.domain;
     this._item = undefined;
     this._opened = true;
     await this.updateComplete;

src/panels/config/helpers/ha-config-helpers.ts

@@ -29,6 +29,14 @@ import { showEntityEditorDialog } from "../entities/show-dialog-entity-editor";
 import { configSections } from "../ha-panel-config";
 import { HELPER_DOMAINS } from "./const";
 import { showHelperDetailDialog } from "./show-dialog-helper-detail";
+import { navigate } from "../../../common/navigate";
+import { extractSearchParam } from "../../../common/url/search-params";
+import { getConfigFlowHandlers } from "../../../data/config_flow";
+import { showConfigFlowDialog } from "../../../dialogs/config-flow/show-dialog-config-flow";
+import {
+  showAlertDialog,
+  showConfirmationDialog,
+} from "../../../dialogs/generic/show-dialog-box";
 
 // This groups items by a key but only returns last entry per key.
 const groupByOne = <T>(
@@ -219,6 +227,67 @@ export class HaConfigHelpers extends SubscribeMixin(LitElement) {
   protected firstUpdated(changedProps: PropertyValues) {
     super.firstUpdated(changedProps);
     this._getConfigEntries();
+    if (this.route.path === "/add") {
+      this._handleAdd();
+    }
+  }
+
+  private async _handleAdd() {
+    const domain = extractSearchParam("domain");
+    navigate("/config/helpers", { replace: true });
+    if (!domain) {
+      return;
+    }
+    if (HELPER_DOMAINS.includes(domain)) {
+      showHelperDetailDialog(this, {
+        domain,
+      });
+      return;
+    }
+    const handlers = await getConfigFlowHandlers(this.hass, "helper");
+
+    if (!handlers.includes(domain)) {
+      const integrations = await getConfigFlowHandlers(
+        this.hass,
+        "integration"
+      );
+      if (integrations.includes(domain)) {
+        navigate(`/config/integrations/add?domain=${domain}`, {
+          replace: true,
+        });
+        return;
+      }
+      showAlertDialog(this, {
+        title: this.hass.localize(
+          "ui.panel.config.integrations.config_flow.error"
+        ),
+        text: this.hass.localize(
+          "ui.panel.config.integrations.config_flow.no_config_flow"
+        ),
+      });
+      return;
+    }
+    const localize = await this.hass.loadBackendTranslation(
+      "title",
+      domain,
+      true
+    );
+    if (
+      !(await showConfirmationDialog(this, {
+        title: this.hass.localize("ui.panel.config.integrations.confirm_new", {
+          integration: domainToName(localize, domain),
+        }),
+      }))
+    ) {
+      return;
+    }
+    showConfigFlowDialog(this, {
+      dialogClosedCallback: () => {
+        this._getConfigEntries();
+      },
+      startFlowHandler: domain,
+      showAdvanced: this.hass.userData?.showAdvanced,
+    });
   }
 
   protected willUpdate(changedProps: PropertyValues) {

src/panels/config/helpers/show-dialog-helper-detail.ts

@@ -4,8 +4,9 @@ import { DataEntryFlowDialogParams } from "../../../dialogs/config-flow/show-dia
 export const loadHelperDetailDialog = () => import("./dialog-helper-detail");
 
 export interface ShowDialogHelperDetailParams {
+  domain?: string;
   // Only used for config entries
-  dialogClosedCallback: DataEntryFlowDialogParams["dialogClosedCallback"];
+  dialogClosedCallback?: DataEntryFlowDialogParams["dialogClosedCallback"];
 }
 
 export const showHelperDetailDialog = (

src/panels/config/integrations/ha-config-integrations.ts

@@ -67,6 +67,7 @@ import "./ha-ignored-config-entry-card";
 import "./ha-integration-card";
 import type { HaIntegrationCard } from "./ha-integration-card";
 import { fetchDiagnosticHandlers } from "../../../data/diagnostics";
+import { HELPER_DOMAINS } from "../helpers/const";
 
 export interface ConfigEntryUpdatedEvent {
   entry: ConfigEntry;
@@ -661,6 +662,19 @@ class HaConfigIntegrations extends SubscribeMixin(LitElement) {
     const handlers = await getConfigFlowHandlers(this.hass, "integration");
 
     if (!handlers.includes(domain)) {
+      if (HELPER_DOMAINS.includes(domain)) {
+        navigate(`/config/helpers/add?domain=${domain}`, {
+          replace: true,
+        });
+        return;
+      }
+      const helpers = await getConfigFlowHandlers(this.hass, "helper");
+      if (helpers.includes(domain)) {
+        navigate(`/config/helpers/add?domain=${domain}`, {
+          replace: true,
+        });
+        return;
+      }
       showAlertDialog(this, {
         title: this.hass.localize(
           "ui.panel.config.integrations.config_flow.error"