import { ok, err, type ReadonlyDB } from "@tailor-platform/erp-kit/core";
import type { DB } from "../generated/kysely-tailordb";
import { AssignmentNotFoundError } from "../lib/errors.generated";

export interface GetAssignmentInput {
  id: string;
}

export async function run(db: ReadonlyDB<DB>, input: GetAssignmentInput) {
  const assignment = await db
    .selectFrom("Assignment")
    .selectAll()
    .where("id", "=", input.id)
    .executeTakeFirst();

  if (!assignment) {
    return err(new AssignmentNotFoundError(input.id));
  }

  return ok({ assignment });
}