import { err, ok, type CommandContext } from "@tailor-platform/erp-kit/core";
import type { Transaction } from "../generated/kysely-tailordb";
import { ItemNotSellableError } from "../lib/errors.generated";
import {
  createSalesItemRepository,
  type SalesItemRepository,
} from "../repository/salesItemRepository";

export interface DeleteSalesItemInput {
  itemId: string;
}

export async function run(
  db: Transaction,
  input: DeleteSalesItemInput,
  _ctx: CommandContext,
  repositoryFactory: (db: Transaction) => SalesItemRepository = createSalesItemRepository,
) {
  const repository = repositoryFactory(db);
  const salesItem = await repository.findByItemId(input.itemId, { forUpdate: true });
  if (!salesItem) {
    return err(new ItemNotSellableError(input.itemId));
  }

  // Sales orders reference the item, not this record, so withdrawing the
  // adoption leaves ordered documents fulfillable and billable.
  await repository.deleteByItemId(input.itemId);
  return ok({ salesItemId: salesItem.id });
}