package syn

import (
	omd "git.loafle.net/overflow/model/discovery"
	omm "git.loafle.net/overflow/model/meta"
	"git.loafle.net/overflow_scanner/probe/discovery/session"
)

var (
	discovererType = omm.ToMetaDiscovererType(omm.MetaDiscovererTypeEnumTCPSyn)
)

func Scan(discoverySession session.DiscoverySession, targetHost *omd.Host) error {
	if nil == targetHost || nil == discoverySession.DiscoverPort() || !discoverySession.DiscoverPort().IncludeTCP {
		return nil
	}

	if !discoverySession.HostNeedScan(targetHost, discovererType) {
		return nil
	}

	metaIPTypeEnum := omm.ToMetaIPTypeEnum(discoverySession.Zone().MetaIPType)

	switch metaIPTypeEnum {
	case omm.MetaIPTypeEnumV4:
		return scanV4(discoverySession, targetHost)
	case omm.MetaIPTypeEnumV6:
		return scanV6(discoverySession, targetHost)
	}

	return nil
}