// Copyright 2024 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .

package utils

import (
	"github.com/TeaOSLab/EdgeCommon/pkg/iputils"
	"strings"
)

// ParseIPValue 解析IP值
func ParseIPValue(value string) (newValue string, ipFrom string, ipTo string, ok bool) {
	if len(value) == 0 {
		return
	}

	newValue = value

	// ip1-ip2
	if strings.Contains(value, "-") {
		var pieces = strings.Split(value, "-")
		if len(pieces) != 2 {
			return
		}

		ipFrom = strings.TrimSpace(pieces[0])
		ipTo = strings.TrimSpace(pieces[1])

		if !iputils.IsValid(ipFrom) || !iputils.IsValid(ipTo) {
			return
		}

		if !iputils.IsSameVersion(ipFrom, ipTo) {
			return
		}

		if iputils.CompareIP(ipFrom, ipTo) > 0 {
			ipFrom, ipTo = ipTo, ipFrom
			newValue = ipFrom + "-" + ipTo
		}

		ok = true
		return
	}

	// ip/mask
	if strings.Contains(value, "/") {
		cidr, err := iputils.ParseCIDR(value)
		if err != nil {
			return
		}
		return newValue, cidr.From().String(), cidr.To().String(), true
	}

	// single value
	if iputils.IsValid(value) {
		ipFrom = value
		ok = true
		return
	}

	return
}