package weldr

import (

	"errors"

	"net/url"

	"strconv"

)

func parseOffsetAndLimit(query url.Values) (uint, uint, error) {

	var offset, limit uint64 = 0, 20

	var err error

	if v := query.Get("offset"); v != "" {

		offset, err = strconv.ParseUint(v, 10, 64)

		if err != nil {

			return 0, 0, errors.New("invalid value for 'offset': " + err.Error())

		}

	}

	if v := query.Get("limit"); v != "" {

		limit, err = strconv.ParseUint(v, 10, 64)

		if err != nil {

			return 0, 0, errors.New("invalid value for 'limit': " + err.Error())

		}

	}

	return uint(offset), uint(limit), nil

}

func min(a, b uint) uint {

	if a < b {

		return a

	}

	return b

}