package inbound

import (
	"net"
	"net/netip"

	C "github.com/Dreamacro/clash/constant"
)

var skipAuthPrefixes []netip.Prefix

func SetSkipAuthPrefixes(prefixes []netip.Prefix) {
	skipAuthPrefixes = prefixes
}

func SkipAuthPrefixes() []netip.Prefix {
	return skipAuthPrefixes
}

func SkipAuthRemoteAddr(addr net.Addr) bool {
	m := C.Metadata{}
	if err := m.SetRemoteAddr(addr); err != nil {
		return false
	}
	return skipAuth(m.AddrPort().Addr())
}

func SkipAuthRemoteAddress(addr string) bool {
	m := C.Metadata{}
	if err := m.SetRemoteAddress(addr); err != nil {
		return false
	}
	return skipAuth(m.AddrPort().Addr())
}

func skipAuth(addr netip.Addr) bool {
	if addr.IsValid() {
		for _, prefix := range skipAuthPrefixes {
			if prefix.Contains(addr.Unmap()) {
				return true
			}
		}
	}
	return false
}