/**
 * Copyright since 2025 Mifos Initiative
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

/**
 * The GL accounts a financial activity may be mapped to.
 *
 * The activity itself says which kind of account it needs — the template returns `mappedGLAccountType` on every
 * option — so the answer is read from the activity rather than worked out from its id. The screens used to switch on
 * the id instead, listing the ones they knew:
 *
 *     case 100, 101, 102, 103 → asset
 *     case 200, 201           → liability
 *     case 300                → equity
 *
 * Every activity added since fell through that switch and left the account dropdown empty, which is how dividendPaid
 * (202), reserveForDividend (301), distributableProfit (302), retainedProfit (303) and dividendRoundOff (304) became
 * unmappable — the screen offered no accounts and gave no reason. A list keyed on ids has to be extended by hand for
 * each new activity, and is silently wrong until someone notices; asking the activity what it needs cannot fall out
 * of step with the backend.
 *
 * @param activities the template's financialActivityOptions
 * @param activityId the activity the user picked
 * @param glAccountOptions the template's glAccountOptions, keyed assetAccountOptions / liabilityAccountOptions / …
 */
export function accountOptionsForActivity(activities: any[], activityId: number, glAccountOptions: any): any[] {
  const activity = (activities || []).find((a) => a?.id === activityId);
  const accountType = activity?.mappedGLAccountType;
  if (!accountType || !glAccountOptions) {
    return [];
  }
  // ASSET → assetAccountOptions, and so on for LIABILITY, EQUITY, INCOME and EXPENSE.
  return glAccountOptions[`${accountType.toLowerCase()}AccountOptions`] ?? [];
}