import { BodyValidator, Validator } from "sim-shared/aplication/BodyValidator.js";
import { QueryPaginationArgs } from "sim-shared/domain/PaginationArgs.js";

const limitPositiveOrUndefined = <Validator<QueryPaginationArgs>>{
  field: "limit",
  validationFunc: (args) => (args.limit == undefined || !isNaN(+args.limit) && parseInt(args.limit) >= 0),
  errorMsg: "El campo limit debe ser un numero o undefined (default 0)"
}
const offsetPositiveOrUndefined = <Validator<QueryPaginationArgs>>{
  field: "offset",
  validationFunc: (args) => (args.offset == undefined || isNaN(+args.offset) && parseInt(args.offset) >= 1),
  errorMsg: "El campo offset debe ser un numero o undefined (default 0)"
}

export const paginationValidator = new BodyValidator<QueryPaginationArgs & {}>([
  limitPositiveOrUndefined,
  offsetPositiveOrUndefined
])