import {
  DEFAULT_PAGE_SIZE,
  buildPaginatedResult,
  ok,
  type PaginationInput,
  type ReadonlyDB,
} from "@tailor-platform/erp-kit/core";
import type { DB } from "../generated/kysely-tailordb";

export type ListHolidayCalendarsInput = PaginationInput;

/**
 * Function: listHolidayCalendars
 * Description: Returns a paginated list of HolidayCalendars for admin review
 * and for choosing the calendar a WorkRule or CompanyHoliday binds to.
 */
export async function run(db: ReadonlyDB<DB>, input: ListHolidayCalendarsInput) {
  const limit = input.limit ?? DEFAULT_PAGE_SIZE;
  const offset = input.offset ?? 0;
  const orderBy = input.orderBy ?? "id";
  const orderDirection = input.orderDirection ?? "asc";

  const holidayCalendars = await db
    .selectFrom("HolidayCalendar")
    .selectAll()
    .orderBy(orderBy, orderDirection)
    .limit(limit + 1)
    .offset(offset)
    .execute();

  return ok(buildPaginatedResult(holidayCalendars, limit));
}