package connection

import (
	"crypto/tls"
	"net"
	"strings"
	"time"

	omd "git.loafle.net/overflow/model/discovery"
	omm "git.loafle.net/overflow/model/meta"
	ounp "git.loafle.net/overflow/util-go/net/ping"
)

func Ping(service *omd.Service, pingOption ounp.Option) (ounp.Result, error) {
	pingResult := &ounp.PingResult{
		Responses: make(map[int]ounp.Response, 0),
		Summary:   &ounp.PingSummary{},
	}

LOOP:
	for indexR := 0; indexR < pingOption.GetCount(); indexR++ {
		conn, err := getConnection(service, pingOption)
		if nil != err {
			pingResult.Responses[indexR] = &ounp.PingResponse{
				Error: err.Error(),
			}
			continue LOOP
		}

		pingResult.Responses[indexR] = &ounp.PingResponse{
			Time: 0,
		}

		conn.Close()
	}

	return pingResult, nil
}

func getConnection(service *omd.Service, pingOption ounp.Option) (net.Conn, error) {
	addr := net.JoinHostPort(service.Port.Host.Address, service.Port.PortNumber.String())
	portType := strings.ToLower(service.Port.MetaPortType.Key)

	switch omm.ToMetaCryptoTypeEnum(service.MetaCryptoType) {
	case omm.MetaCryptoTypeEnumTLS:
		dialer := &net.Dialer{
			Timeout: time.Duration(pingOption.GetDeadline()) * time.Second,
		}

		return tls.DialWithDialer(
			dialer,
			portType,
			addr,
			&tls.Config{
				InsecureSkipVerify: true,
				ServerName:         service.Port.Host.Address,
			},
		)
	default:

		return net.DialTimeout(portType, addr, time.Duration(pingOption.GetDeadline())*time.Second)
	}
}