Provide stub config for entity-filter (#8121)

* Provide stub config for entity-filter

* "card" option is optional since it has a default

* Search dynamically for stub config entities

src/panels/lovelace/cards/hui-entity-filter-card.ts

@@ -8,6 +8,7 @@ import { LovelaceCardConfig } from "../../../data/lovelace";
 import { HomeAssistant } from "../../../types";
 import { computeCardSize } from "../common/compute-card-size";
 import { evaluateFilter } from "../common/evaluate-filter";
+import { findEntities } from "../common/find-entites";
 import { processConfigEntities } from "../common/process-config-entities";
 import { createCardElement } from "../create-element/create-card-element";
 import { EntityFilterEntityConfig } from "../entity-rows/types";
@@ -15,6 +16,30 @@ import { LovelaceCard } from "../types";
 import { EntityFilterCardConfig } from "./types";
 
 class EntityFilterCard extends UpdatingElement implements LovelaceCard {
+  public static getStubConfig(
+    hass: HomeAssistant,
+    entities: string[],
+    entitiesFallback: string[]
+  ): EntityFilterCardConfig {
+    const maxEntities = 3;
+    const foundEntities = findEntities(
+      hass,
+      maxEntities,
+      entities,
+      entitiesFallback,
+      ["light", "switch", "sensor"]
+    );
+
+    return {
+      type: "entity-filter",
+      entities: foundEntities,
+      state_filter: [
+        foundEntities[0] ? hass.states[foundEntities[0]].state : "",
+      ],
+      card: { type: "entities" },
+    };
+  }
+
   @property({ attribute: false }) public hass?: HomeAssistant;
 
   @property() public isPanel = false;

src/panels/lovelace/cards/types.ts

@@ -92,7 +92,7 @@ export interface EntityFilterCardConfig extends LovelaceCardConfig {
   type: "entity-filter";
   entities: Array<EntityFilterEntityConfig | string>;
   state_filter: Array<{ key: string } | string>;
-  card: Partial<LovelaceCardConfig>;
+  card?: Partial<LovelaceCardConfig>;
   show_empty?: boolean;
 }
 

src/translations/en.json

@@ -2833,7 +2833,7 @@
               "image": "Image Path",
               "maximum": "Maximum",
               "manual": "Manual",
-              "manual_description": "Need to add a custom card or just want to manually write the yaml?",
+              "manual_description": "Need to add a custom card or just want to manually write the YAML?",
               "minimum": "Minimum",
               "name": "Name",
               "refresh_interval": "Refresh Interval",