1 files changed, 56 insertions, 0 deletions
diff --git a/packages/merchant-backoffice-ui/src/utils/table.ts b/packages/merchant-backoffice-ui/src/utils/table.ts
new file mode 100644
index 000000000..982b68e5e
--- /dev/null
+++ b/packages/merchant-backoffice-ui/src/utils/table.ts
@@ -0,0 +1,56 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021-2024 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+
+/**
+ *
+ * @author Sebastian Javier Marchano (sebasjm)
+ */
+
+export interface Actions<T extends WithId> {
+  element: T;
+  type: "DELETE" | "UPDATE";
+}
+
+function notEmpty<TValue>(value: TValue | null | undefined): value is TValue {
+  return value !== null && value !== undefined;
+}
+
+export function buildActions<T extends WithId>(
+  instances: T[],
+  selected: string[],
+  action: "DELETE",
+): Actions<T>[] {
+  return selected
+    .map((id) => instances.find((i) => i.id === id))
+    .filter(notEmpty)
+    .map((id) => ({ element: id, type: action }));
+}
+
+/**
+ * For any object or array, return the same object if is not empty.
+ * not empty:
+ *  - for arrays: at least one element not undefined
+ *  - for objects: at least one property not undefined
+ * @param obj
+ * @returns
+ */
+export function undefinedIfEmpty<
+  T extends Record<string, unknown> | Array<unknown>,
+>(obj: T | undefined): T | undefined {
+  if (obj === undefined) return undefined;
+  return Object.values(obj).some((v) => v !== undefined) ? obj : undefined;
+}