import { err, ok, type CommandContext } from "@tailor-platform/erp-kit/core";
import type { Transaction } from "../generated/kysely-tailordb";
import { WorkRegimeNotFoundError, InvalidWorkRegimeStatusError } from "../lib/errors.generated";

export interface DeactivateWorkRegimeInput {
  id: string;
}

/**
 * Function: deactivateWorkRegime
 * Description: Marks an ACTIVE work-regime catalog entry INACTIVE so it is
 * no longer selectable for new employments; historical references keep working.
 * Rejected when the entry is already INACTIVE.
 */
export async function run(db: Transaction, input: DeactivateWorkRegimeInput, _ctx: CommandContext) {
  const workRegime = await db
    .selectFrom("WorkRegime")
    .selectAll()
    .where("id", "=", input.id)
    .forUpdate()
    .executeTakeFirst();
  if (!workRegime) {
    return err(new WorkRegimeNotFoundError(input.id));
  }
  if (workRegime.status !== "ACTIVE") {
    return err(new InvalidWorkRegimeStatusError(`${input.id}:${workRegime.status}`));
  }

  const updated = await db
    .updateTable("WorkRegime")
    .set({ status: "INACTIVE" })
    .where("id", "=", input.id)
    .returningAll()
    .executeTakeFirstOrThrow();

  return ok({ workRegime: updated });
}