Add functionality for deleting project assets and related commands

src/commands/set-entity-authored-state-command.ts

@@ -0,0 +1,90 @@
+import { createOpaqueId } from "../core/ids";
+import { cloneEntityInstance } from "../entities/entity-instances";
+
+import type { EditorCommand } from "./command";
+
+interface SetEntityAuthoredStateCommandOptions {
+  entityId: string;
+  visible?: boolean;
+  enabled?: boolean;
+}
+
+function createCommandLabel(options: SetEntityAuthoredStateCommandOptions): string {
+  if (options.enabled !== undefined && options.visible === undefined) {
+    return options.enabled ? "Enable entity" : "Disable entity";
+  }
+
+  if (options.visible !== undefined && options.enabled === undefined) {
+    return options.visible ? "Show entity" : "Hide entity";
+  }
+
+  return "Update entity state";
+}
+
+export function createSetEntityAuthoredStateCommand(
+  options: SetEntityAuthoredStateCommandOptions
+): EditorCommand {
+  if (options.visible === undefined && options.enabled === undefined) {
+    throw new Error("Entity authored state command requires at least one change.");
+  }
+
+  let previousVisible: boolean | null = null;
+  let previousEnabled: boolean | null = null;
+
+  return {
+    id: createOpaqueId("command"),
+    label: createCommandLabel(options),
+    execute(context) {
+      const currentDocument = context.getDocument();
+      const entity = currentDocument.entities[options.entityId];
+
+      if (entity === undefined) {
+        throw new Error(`Entity ${options.entityId} does not exist.`);
+      }
+
+      if (previousVisible === null) {
+        previousVisible = entity.visible;
+      }
+
+      if (previousEnabled === null) {
+        previousEnabled = entity.enabled;
+      }
+
+      context.setDocument({
+        ...currentDocument,
+        entities: {
+          ...currentDocument.entities,
+          [entity.id]: cloneEntityInstance({
+            ...entity,
+            visible: options.visible ?? entity.visible,
+            enabled: options.enabled ?? entity.enabled
+          })
+        }
+      });
+    },
+    undo(context) {
+      if (previousVisible === null || previousEnabled === null) {
+        return;
+      }
+
+      const currentDocument = context.getDocument();
+      const entity = currentDocument.entities[options.entityId];
+
+      if (entity === undefined) {
+        return;
+      }
+
+      context.setDocument({
+        ...currentDocument,
+        entities: {
+          ...currentDocument.entities,
+          [entity.id]: cloneEntityInstance({
+            ...entity,
+            visible: previousVisible,
+            enabled: previousEnabled
+          })
+        }
+      });
+    }
+  };
+}