package utils

import (
	"net/url"
	"strconv"
	"strings"
)

func GetQueryParam(query url.Values, key string, defaultVal string) string {
	data := query.Get(key)

	if data == "" {
		return defaultVal
	}

	return data
}

func GetPaginationParams(query url.Values) (int, int) {
	offset := GetQueryParam(query, "offset", "0")
	limit := GetQueryParam(query, "limit", "10")

	limitInt, err := strconv.Atoi(limit)

	if err != nil {
		limitInt = 10
	}

	offsetInt, err := strconv.Atoi(offset)

	if err != nil {
		offsetInt = 0
	}

	return limitInt, offsetInt
}

func GetFilterParams(query url.Values) (string, bool, map[string]string) {
	sort := GetQueryParam(query, "sort", "id:asc")
	filter := GetQueryParam(query, "filter", "")

	filtersMap := make(map[string]string)

	filters := strings.Split(filter, "|")
	sorts := strings.Split(sort, ":")

	for _, filter := range filters {
		tmp := strings.Split(filter, "=")
		if len(tmp) == 2 {
			filtersMap[tmp[0]] = tmp[1]
		}
	}

	isDesc := false

	if sorts[1] == "desc" {
		isDesc = true
	}

	return sorts[0], isDesc, filtersMap
}