package intercept

import (
	"net"
	"testing"

	"github.com/google/uuid"
	"github.com/openziti/edge-api/rest_model"
	"github.com/openziti/foundation/v2/util"
	"github.com/openziti/ziti/v2/tunnel"
	"github.com/openziti/ziti/v2/tunnel/entities"
	"github.com/stretchr/testify/require"
)

type testProvider struct {
}

func (self *testProvider) PrepForUse(serviceId string) {
}

func (self *testProvider) GetCurrentIdentity() (*rest_model.IdentityDetail, error) {
	cost := rest_model.TerminatorCost(0)
	return &rest_model.IdentityDetail{
		Name:               util.Ptr("foo.bar"),
		DefaultHostingCost: &cost,
		AppData: &rest_model.Tags{
			SubTags: map[string]interface{}{
				"srcip":      "123.456.789.10:5555",
				"sourceIp":   "15.14.13.12",
				"sourcePort": 1999,
			},
		},
	}, nil
}

func (self *testProvider) GetCurrentIdentityWithBackoff() (*rest_model.IdentityDetail, error) {
	return self.GetCurrentIdentity()
}

func (self *testProvider) TunnelService(service tunnel.Service, identity string, conn net.Conn, halfClose bool, appInfo []byte) error {
	panic("implement me")
}

func (self *testProvider) HostService(hostCtx tunnel.HostingContext) (tunnel.HostControl, error) {
	panic("implement me")
}

func Test_SourceIp(t *testing.T) {
	svc := &entities.Service{}

	sourceAddr := &net.TCPAddr{IP: net.ParseIP("1.2.3.4"), Port: 5432}
	destAddr := &net.TCPAddr{IP: net.ParseIP("5.6.7.8"), Port: 80}

	req := require.New(t)

	poller := &ServiceListener{provider: &testProvider{}}
	req.NoError(poller.configureSourceAddrProvider(svc))
	req.Equal("", svc.GetSourceAddr(sourceAddr, destAddr))

	svc = &entities.Service{
		InterceptV1Config: &entities.InterceptV1Config{},
	}

	req.NoError(poller.configureSourceAddrProvider(svc))
	req.Equal("", svc.GetSourceAddr(sourceAddr, destAddr))

	testMatch := func(templ string, expected string) {
		svc.InterceptV1Config.SourceIp = &templ
		req.NoError(poller.configureSourceAddrProvider(svc))
		req.Equal(expected, svc.GetSourceAddr(sourceAddr, destAddr))
	}

	testMatch("$src_ip:$src_port", "1.2.3.4:5432")
	testMatch("$src_ip:$dst_port", "1.2.3.4:80")
	testMatch("$dst_ip:$src_port", "5.6.7.8:5432")
	testMatch("$dst_ip:$dst_port", "5.6.7.8:80")
	testMatch("$tunneler_id.name", "foo.bar")
	testMatch("$tunneler_id.appData[srcip]", "123.456.789.10:5555")
	testMatch("$tunneler_id.appData[sourceIp]:$tunneler_id.appData[sourcePort]", "15.14.13.12:1999")
}

func Test_TemplateIdentity(t *testing.T) {
	serviceId := uuid.NewString()
	svc := &entities.Service{
		ServiceDetail: rest_model.ServiceDetail{
			BaseEntity: rest_model.BaseEntity{
				ID: &serviceId,
			},
		},
	}
	hostTerminator := &entities.HostV1Config{ListenOptions: &entities.HostV1ListenOptions{}}
	provider := &testProvider{}
	currentIdentity, err := provider.GetCurrentIdentity()
	req := require.New(t)
	req.NoError(err)

	testMatch := func(templ string, expected string) {
		hostTerminator.ListenOptions.Identity = templ
		listenOptions, err := getDefaultOptions(svc, currentIdentity, hostTerminator)
		req.NoError(err)
		req.Equal(expected, listenOptions.Identity)
	}

	testMatch("$tunneler_id.appData[sourceIp]", "15.14.13.12")
}