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/*
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;
}
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