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 ReactivateWorkRegimeInput {
  id: string;
}

/**
 * Function: reactivateWorkRegime
 * Description: Returns an INACTIVE work-regime catalog entry to ACTIVE so it
 * is selectable again. Rejected when the entry is already ACTIVE.
 */
export async function run(db: Transaction, input: ReactivateWorkRegimeInput, _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 !== "INACTIVE") {
    return err(new InvalidWorkRegimeStatusError(`${input.id}:${workRegime.status}`));
  }

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

  return ok({ workRegime: updated });
}