first commit

libs/web/tracker/application/src/lib/stores/command.ts

@@ -0,0 +1,21 @@
+import { mapResponse } from '@ngrx/operators';
+import { EventInstance } from '@ngrx/signals/events';
+import { Observable } from 'rxjs';
+import { describeError } from '../notifications';
+
+type Creator = (message: string) => EventInstance<string, string>;
+
+/** Runs a command and turns its outcome into a succeeded/failed event. */
+export function runCommand<T>(
+  command$: Observable<T>,
+  successMessage: string,
+  succeeded: Creator,
+  failed: Creator,
+) {
+  return command$.pipe(
+    mapResponse({
+      next: () => succeeded(successMessage),
+      error: (error) => failed(describeError(error)),
+    }),
+  );
+}