//go:build extended
// +build extended

package sync_test

import (
	"context"
	"crypto/tls"
	"crypto/x509"
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"io/ioutil"
	"os"
	"os/exec"
	"path"
	"reflect"
	"strings"
	"testing"
	"time"

	"github.com/notaryproject/notation-go-lib"
	godigest "github.com/opencontainers/go-digest"
	ispec "github.com/opencontainers/image-spec/specs-go/v1"
	artifactspec "github.com/oras-project/artifacts-spec/specs-go/v1"
	"github.com/sigstore/cosign/cmd/cosign/cli/generate"
	"github.com/sigstore/cosign/cmd/cosign/cli/options"
	"github.com/sigstore/cosign/cmd/cosign/cli/sign"
	"github.com/sigstore/cosign/cmd/cosign/cli/verify"
	. "github.com/smartystreets/goconvey/convey"
	"gopkg.in/resty.v1"
	"zotregistry.io/zot/pkg/api"
	"zotregistry.io/zot/pkg/api/config"
	extconf "zotregistry.io/zot/pkg/extensions/config"
	"zotregistry.io/zot/pkg/extensions/sync"
	. "zotregistry.io/zot/test"
)

const (
	ServerCert = "../../../test/data/server.cert"
	ServerKey  = "../../../test/data/server.key"
	CACert     = "../../../test/data/ca.crt"
	ClientCert = "../../../test/data/client.cert"
	ClientKey  = "../../../test/data/client.key"

	testImage    = "zot-test"
	testImageTag = "0.0.1"
	testCveImage = "zot-cve-test"
)

var errSync = errors.New("sync error, src oci repo differs from dest one")

type TagsList struct {
	Name string
	Tags []string
}

type ReferenceList struct {
	References []notation.Descriptor `json:"references"`
}

type catalog struct {
	Repositories []string `json:"repositories"`
}

func copyFile(sourceFilePath, destFilePath string) error {
	destFile, err := os.Create(destFilePath)
	if err != nil {
		return err
	}
	defer destFile.Close()

	sourceFile, err := os.Open(sourceFilePath)
	if err != nil {
		return err
	}
	defer sourceFile.Close()

	if _, err = io.Copy(destFile, sourceFile); err != nil {
		return err
	}

	return nil
}

func startUpstreamServer(secure, basicAuth bool) (*api.Controller, string, string, string, *resty.Client) {
	srcPort := GetFreePort()

	srcConfig := config.New()

	client := resty.New()

	var srcBaseURL string
	if secure {
		srcBaseURL = GetSecureBaseURL(srcPort)

		srcConfig.HTTP.TLS = &config.TLSConfig{
			Cert:   ServerCert,
			Key:    ServerKey,
			CACert: CACert,
		}

		caCert, err := ioutil.ReadFile(CACert)
		if err != nil {
			panic(err)
		}

		caCertPool := x509.NewCertPool()
		caCertPool.AppendCertsFromPEM(caCert)

		client.SetTLSClientConfig(&tls.Config{RootCAs: caCertPool, MinVersion: tls.VersionTLS12})

		cert, err := tls.LoadX509KeyPair("../../../test/data/client.cert", "../../../test/data/client.key")
		if err != nil {
			panic(err)
		}

		client.SetCertificates(cert)
	} else {
		srcBaseURL = GetBaseURL(srcPort)
	}

	var htpasswdPath string
	if basicAuth {
		htpasswdPath = MakeHtpasswdFile()
		srcConfig.HTTP.Auth = &config.AuthConfig{
			HTPasswd: config.AuthHTPasswd{
				Path: htpasswdPath,
			},
		}
	}

	srcConfig.HTTP.Port = srcPort

	srcDir, err := ioutil.TempDir("", "oci-src-repo-test")
	if err != nil {
		panic(err)
	}

	err = CopyFiles("../../../test/data", srcDir)
	if err != nil {
		panic(err)
	}

	srcConfig.Storage.RootDirectory = srcDir

	sctlr := api.NewController(srcConfig)

	go func() {
		// this blocks
		if err := sctlr.Run(); err != nil {
			return
		}
	}()

	// wait till ready
	for {
		_, err := client.R().Get(srcBaseURL)
		if err == nil {
			break
		}

		time.Sleep(100 * time.Millisecond)
	}

	return sctlr, srcBaseURL, srcDir, htpasswdPath, client
}

func startDownstreamServer(secure bool, syncConfig *sync.Config) (*api.Controller, string, string, *resty.Client) {
	destPort := GetFreePort()

	destConfig := config.New()

	client := resty.New()

	var destBaseURL string
	if secure {
		destBaseURL = GetSecureBaseURL(destPort)

		destConfig.HTTP.TLS = &config.TLSConfig{
			Cert:   ServerCert,
			Key:    ServerKey,
			CACert: CACert,
		}

		caCert, err := ioutil.ReadFile(CACert)
		if err != nil {
			panic(err)
		}

		caCertPool := x509.NewCertPool()
		caCertPool.AppendCertsFromPEM(caCert)

		client.SetTLSClientConfig(&tls.Config{RootCAs: caCertPool, MinVersion: tls.VersionTLS12})

		cert, err := tls.LoadX509KeyPair("../../../test/data/client.cert", "../../../test/data/client.key")
		if err != nil {
			panic(err)
		}

		client.SetCertificates(cert)
	} else {
		destBaseURL = GetBaseURL(destPort)
	}

	destConfig.HTTP.Port = destPort

	destDir, err := ioutil.TempDir("", "oci-dest-repo-test")
	if err != nil {
		panic(err)
	}

	destConfig.Storage.RootDirectory = destDir
	destConfig.Storage.Dedupe = false
	destConfig.Storage.GC = false

	destConfig.Extensions = &extconf.ExtensionConfig{}
	destConfig.Extensions.Search = nil
	destConfig.Extensions.Sync = syncConfig

	dctlr := api.NewController(destConfig)

	go func() {
		// this blocks
		if err := dctlr.Run(); err != nil {
			return
		}
	}()

	// wait till ready
	for {
		_, err := client.R().Get(destBaseURL)
		if err == nil {
			break
		}

		time.Sleep(100 * time.Millisecond)
	}

	return dctlr, destBaseURL, destDir, client
}

func TestSyncOnDemand(t *testing.T) {
	Convey("Verify sync on demand feature", t, func() {
		sctlr, srcBaseURL, srcDir, _, srcClient := startUpstreamServer(false, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		var tlsVerify bool

		regex := ".*"
		semver := true

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					Prefix: testImage,
					Tags: &sync.Tags{
						Regex:  &regex,
						Semver: &semver,
					},
				},
			},
			URL:       srcBaseURL,
			TLSVerify: &tlsVerify,
			CertDir:   "",
			OnDemand:  true,
		}

		syncConfig := &sync.Config{
			Registries: []sync.RegistryConfig{syncRegistryConfig},
		}

		dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		var srcTagsList TagsList
		var destTagsList TagsList

		resp, _ := srcClient.R().Get(srcBaseURL + "/v2/" + testImage + "/tags/list")
		So(resp, ShouldNotBeNil)
		So(resp.StatusCode(), ShouldEqual, 200)

		err := json.Unmarshal(resp.Body(), &srcTagsList)
		if err != nil {
			panic(err)
		}

		resp, err = destClient.R().Get(destBaseURL + "/v2/" + "inexistent" + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + "inexistent")
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		err = os.Chmod(path.Join(destDir, testImage), 0o000)
		if err != nil {
			panic(err)
		}

		resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 500)

		err = os.Chmod(path.Join(destDir, testImage), 0o755)
		if err != nil {
			panic(err)
		}

		resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + "1.1.1")
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		err = os.Chmod(path.Join(destDir, testImage, sync.SyncBlobUploadDir), 0o000)
		if err != nil {
			panic(err)
		}

		resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + "1.1.1")
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		err = os.Chmod(path.Join(destDir, testImage, sync.SyncBlobUploadDir), 0o755)
		if err != nil {
			panic(err)
		}

		err = os.MkdirAll(path.Join(destDir, testImage, "blobs"), 0o000)
		if err != nil {
			panic(err)
		}

		resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		err = os.Chmod(path.Join(destDir, testImage, "blobs"), 0o755)
		if err != nil {
			panic(err)
		}

		resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 200)

		resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/tags/list")
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 200)

		err = json.Unmarshal(resp.Body(), &destTagsList)
		if err != nil {
			panic(err)
		}

		So(destTagsList, ShouldResemble, srcTagsList)
	})
}

func TestSync(t *testing.T) {
	Convey("Verify sync feature", t, func() {
		updateDuration, _ := time.ParseDuration("30m")

		sctlr, srcBaseURL, srcDir, _, srcClient := startUpstreamServer(false, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		regex := ".*"
		semver := true
		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					Prefix: testImage,
					Tags: &sync.Tags{
						Regex:  &regex,
						Semver: &semver,
					},
				},
			},
			URL:          srcBaseURL,
			PollInterval: updateDuration,
			TLSVerify:    &tlsVerify,
			CertDir:      "",
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		var srcTagsList TagsList
		var destTagsList TagsList

		resp, _ := srcClient.R().Get(srcBaseURL + "/v2/" + testImage + "/tags/list")
		So(resp, ShouldNotBeNil)
		So(resp.StatusCode(), ShouldEqual, 200)

		err := json.Unmarshal(resp.Body(), &srcTagsList)
		if err != nil {
			panic(err)
		}

		for {
			resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/tags/list")
			if err != nil {
				panic(err)
			}

			err = json.Unmarshal(resp.Body(), &destTagsList)
			if err != nil {
				panic(err)
			}

			if len(destTagsList.Tags) > 0 {
				break
			}

			time.Sleep(500 * time.Millisecond)
		}

		So(destTagsList, ShouldResemble, srcTagsList)

		Convey("Test sync with more contents", func() {
			regex := ".*"
			semver := true

			invalidRegex := "invalid"

			var tlsVerify bool

			syncRegistryConfig := sync.RegistryConfig{
				Content: []sync.Content{
					{
						Prefix: testImage,
						Tags: &sync.Tags{
							Regex:  &regex,
							Semver: &semver,
						},
					},
					{
						Prefix: testCveImage,
						Tags: &sync.Tags{
							Regex:  &invalidRegex,
							Semver: &semver,
						},
					},
				},
				URL:          srcBaseURL,
				PollInterval: updateDuration,
				TLSVerify:    &tlsVerify,
				CertDir:      "",
			}

			syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

			dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
			defer os.RemoveAll(destDir)

			defer func() {
				dctlr.Shutdown()
			}()

			var srcTagsList TagsList
			var destTagsList TagsList

			resp, err := srcClient.R().Get(srcBaseURL + "/v2/" + testImage + "/tags/list")
			So(err, ShouldBeNil)
			So(resp, ShouldNotBeNil)
			So(resp.StatusCode(), ShouldEqual, 200)

			err = json.Unmarshal(resp.Body(), &srcTagsList)
			if err != nil {
				panic(err)
			}

			for {
				resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/tags/list")
				if err != nil {
					panic(err)
				}

				err = json.Unmarshal(resp.Body(), &destTagsList)
				if err != nil {
					panic(err)
				}

				if len(destTagsList.Tags) > 0 {
					break
				}

				time.Sleep(500 * time.Millisecond)
			}

			So(destTagsList, ShouldResemble, srcTagsList)

			// testCveImage should not be synced because of regex being "invalid", shouldn't match anything
			resp, _ = srcClient.R().Get(srcBaseURL + "/v2/" + testCveImage + "/tags/list")
			So(resp, ShouldNotBeNil)
			So(resp.StatusCode(), ShouldEqual, 200)

			err = json.Unmarshal(resp.Body(), &srcTagsList)
			So(err, ShouldBeNil)

			resp, err = destClient.R().Get(destBaseURL + "/v2/" + testCveImage + "/tags/list")
			So(err, ShouldBeNil)

			err = json.Unmarshal(resp.Body(), &destTagsList)
			So(err, ShouldBeNil)

			So(destTagsList, ShouldNotResemble, srcTagsList)
		})
	})
}

func TestSyncPermsDenied(t *testing.T) {
	Convey("Verify sync feature without perm on sync cache", t, func() {
		updateDuration, _ := time.ParseDuration("30m")

		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(false, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		regex := ".*"
		semver := true
		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					Prefix: testImage,
					Tags: &sync.Tags{
						Regex:  &regex,
						Semver: &semver,
					},
				},
			},
			URL:          srcBaseURL,
			PollInterval: updateDuration,
			TLSVerify:    &tlsVerify,
			CertDir:      "",
			OnDemand:     true,
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		err := os.Chmod(path.Join(destDir, testImage, sync.SyncBlobUploadDir), 0o000)
		if err != nil {
			panic(err)
		}

		resp, err := destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		err = os.Chmod(path.Join(destDir, testImage, sync.SyncBlobUploadDir), 0o755)
		if err != nil {
			panic(err)
		}
	})
}

func TestSyncBadTLS(t *testing.T) {
	Convey("Verify sync TLS feature", t, func() {
		updateDuration, _ := time.ParseDuration("30m")

		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(true, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		regex := ".*"
		var semver bool
		tlsVerify := true

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					Prefix: testImage,
					Tags: &sync.Tags{
						Regex:  &regex,
						Semver: &semver,
					},
				},
			},
			URL:          srcBaseURL,
			OnDemand:     true,
			PollInterval: updateDuration,
			TLSVerify:    &tlsVerify,
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, destBaseURL, destDir, destClient := startDownstreamServer(true, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		// give it time to set up sync
		time.Sleep(2 * time.Second)

		resp, _ := destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + "invalid")
		So(resp, ShouldNotBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		resp, _ = destClient.R().Get(destBaseURL + "/v2/" + "invalid" + "/manifests/" + testImageTag)
		So(resp, ShouldNotBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		resp, err := destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)
	})
}

func TestSyncTLS(t *testing.T) {
	Convey("Verify sync TLS feature", t, func() {
		updateDuration, _ := time.ParseDuration("1h")

		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(true, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		var srcIndex ispec.Index
		var destIndex ispec.Index

		srcBuf, err := ioutil.ReadFile(path.Join(srcDir, testImage, "index.json"))
		if err != nil {
			panic(err)
		}

		if err := json.Unmarshal(srcBuf, &srcIndex); err != nil {
			panic(err)
		}

		// copy upstream client certs, use them in sync config
		destClientCertDir, err := ioutil.TempDir("", "destCerts")
		if err != nil {
			panic(err)
		}

		destFilePath := path.Join(destClientCertDir, "ca.crt")
		err = copyFile(CACert, destFilePath)
		if err != nil {
			panic(err)
		}

		destFilePath = path.Join(destClientCertDir, "client.cert")
		err = copyFile(ClientCert, destFilePath)
		if err != nil {
			panic(err)
		}

		destFilePath = path.Join(destClientCertDir, "client.key")
		err = copyFile(ClientKey, destFilePath)
		if err != nil {
			panic(err)
		}

		defer os.RemoveAll(destClientCertDir)

		regex := ".*"
		var semver bool
		tlsVerify := true

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					Prefix: testImage,
					Tags: &sync.Tags{
						Regex:  &regex,
						Semver: &semver,
					},
				},
			},
			URL:          srcBaseURL,
			PollInterval: updateDuration,
			TLSVerify:    &tlsVerify,
			CertDir:      destClientCertDir,
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, _, destDir, _ := startDownstreamServer(true, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		// wait till ready
		for {
			destBuf, _ := ioutil.ReadFile(path.Join(destDir, testImage, "index.json"))
			_ = json.Unmarshal(destBuf, &destIndex)
			time.Sleep(500 * time.Millisecond)
			if len(destIndex.Manifests) > 0 {
				break
			}
		}

		var found bool
		for _, manifest := range srcIndex.Manifests {
			if reflect.DeepEqual(manifest.Annotations, destIndex.Manifests[0].Annotations) {
				found = true
			}
		}

		if !found {
			panic(errSync)
		}
	})
}

func TestSyncBasicAuth(t *testing.T) {
	Convey("Verify sync basic auth", t, func() {
		updateDuration, _ := time.ParseDuration("1h")

		sctlr, srcBaseURL, srcDir, htpasswdPath, srcClient := startUpstreamServer(false, true)
		defer os.Remove(htpasswdPath)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		Convey("Verify sync basic auth with file credentials", func() {
			registryName := strings.Replace(strings.Replace(srcBaseURL, "http://", "", 1), "https://", "", 1)
			credentialsFile := makeCredentialsFile(fmt.Sprintf(`{"%s":{"username": "test", "password": "test"}}`, registryName))

			var tlsVerify bool

			syncRegistryConfig := sync.RegistryConfig{
				Content: []sync.Content{
					{
						Prefix: testImage,
					},
				},
				URL:          srcBaseURL,
				PollInterval: updateDuration,
				TLSVerify:    &tlsVerify,
				CertDir:      "",
			}

			syncConfig := &sync.Config{
				CredentialsFile: credentialsFile,
				Registries:      []sync.RegistryConfig{syncRegistryConfig},
			}

			dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
			defer os.RemoveAll(destDir)

			defer func() {
				dctlr.Shutdown()
			}()

			var srcTagsList TagsList
			var destTagsList TagsList

			resp, _ := srcClient.R().SetBasicAuth("test", "test").Get(srcBaseURL + "/v2/" + testImage + "/tags/list")
			So(resp, ShouldNotBeNil)
			So(resp.StatusCode(), ShouldEqual, 200)

			err := json.Unmarshal(resp.Body(), &srcTagsList)
			if err != nil {
				panic(err)
			}

			for {
				resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/tags/list")
				if err != nil {
					panic(err)
				}

				err = json.Unmarshal(resp.Body(), &destTagsList)
				if err != nil {
					panic(err)
				}

				if len(destTagsList.Tags) > 0 {
					break
				}

				time.Sleep(500 * time.Millisecond)
			}

			So(destTagsList, ShouldResemble, srcTagsList)
		})

		Convey("Verify sync basic auth with wrong file credentials", func() {
			destPort := GetFreePort()
			destBaseURL := GetBaseURL(destPort)

			destConfig := config.New()
			destConfig.HTTP.Port = destPort

			destDir, err := ioutil.TempDir("", "oci-dest-repo-test")
			if err != nil {
				panic(err)
			}

			destConfig.Storage.SubPaths = map[string]config.StorageConfig{
				"a": {
					RootDirectory: destDir,
					GC:            true,
					Dedupe:        true,
				},
			}

			defer os.RemoveAll(destDir)

			destConfig.Storage.RootDirectory = destDir

			regex := ".*"
			var semver bool

			registryName := strings.Replace(strings.Replace(srcBaseURL, "http://", "", 1), "https://", "", 1)

			credentialsFile := makeCredentialsFile(fmt.Sprintf(`{"%s":{"username": "test", "password": "invalid"}}`,
				registryName))

			var tlsVerify bool

			syncRegistryConfig := sync.RegistryConfig{
				Content: []sync.Content{
					{
						Prefix: testImage,
						Tags: &sync.Tags{
							Regex:  &regex,
							Semver: &semver,
						},
					},
				},
				URL:          srcBaseURL,
				PollInterval: updateDuration,
				TLSVerify:    &tlsVerify,
				CertDir:      "",
				OnDemand:     true,
			}

			destConfig.Extensions = &extconf.ExtensionConfig{}
			destConfig.Extensions.Search = nil
			destConfig.Extensions.Sync = &sync.Config{
				CredentialsFile: credentialsFile,
				Registries:      []sync.RegistryConfig{syncRegistryConfig},
			}

			dctlr := api.NewController(destConfig)

			go func() {
				// this blocks
				if err := dctlr.Run(); err != nil {
					return
				}
			}()

			defer func() {
				dctlr.Shutdown()
			}()

			// wait till ready
			for {
				_, err := resty.R().Get(destBaseURL)
				if err == nil {
					break
				}
				time.Sleep(100 * time.Millisecond)
			}

			time.Sleep(2 * time.Second)

			resp, err := resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
			So(err, ShouldBeNil)
			So(resp.StatusCode(), ShouldEqual, 404)
		})

		Convey("Verify sync basic auth with bad file credentials", func() {
			registryName := strings.Replace(strings.Replace(srcBaseURL, "http://", "", 1), "https://", "", 1)

			credentialsFile := makeCredentialsFile(fmt.Sprintf(`{"%s":{"username": "test", "password": "test"}}`,
				registryName))

			err := os.Chmod(credentialsFile, 0o000)
			So(err, ShouldBeNil)

			defer func() {
				So(os.Chmod(credentialsFile, 0o755), ShouldBeNil)
				So(os.RemoveAll(credentialsFile), ShouldBeNil)
			}()

			regex := ".*"
			var semver bool
			var tlsVerify bool

			syncRegistryConfig := sync.RegistryConfig{
				Content: []sync.Content{
					{
						Prefix: testImage,
						Tags: &sync.Tags{
							Regex:  &regex,
							Semver: &semver,
						},
					},
				},
				URL:          srcBaseURL,
				PollInterval: updateDuration,
				TLSVerify:    &tlsVerify,
				CertDir:      "",
			}

			syncConfig := &sync.Config{
				CredentialsFile: credentialsFile,
				Registries:      []sync.RegistryConfig{syncRegistryConfig},
			}

			dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
			defer os.RemoveAll(destDir)

			defer func() {
				dctlr.Shutdown()
			}()

			time.Sleep(2 * time.Second)

			resp, err := destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
			So(err, ShouldBeNil)
			So(resp.StatusCode(), ShouldEqual, 404)
		})

		Convey("Verify on demand sync with basic auth", func() {
			registryName := strings.Replace(strings.Replace(srcBaseURL, "http://", "", 1), "https://", "", 1)
			credentialsFile := makeCredentialsFile(fmt.Sprintf(`{"%s":{"username": "test", "password": "test"}}`, registryName))

			syncRegistryConfig := sync.RegistryConfig{
				URL:      srcBaseURL,
				OnDemand: true,
			}

			unreacheableSyncRegistryConfig1 := sync.RegistryConfig{
				URL:      "localhost:999999",
				OnDemand: true,
			}

			unreacheableSyncRegistryConfig2 := sync.RegistryConfig{
				URL:      "localhost:999999",
				OnDemand: false,
			}

			// add file path to the credentials
			syncConfig := &sync.Config{
				CredentialsFile: credentialsFile,
				Registries: []sync.RegistryConfig{
					unreacheableSyncRegistryConfig1,
					unreacheableSyncRegistryConfig2,
					syncRegistryConfig,
				},
			}

			dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
			defer os.RemoveAll(destDir)

			defer func() {
				dctlr.Shutdown()
			}()

			var srcTagsList TagsList
			var destTagsList TagsList

			resp, _ := srcClient.R().SetBasicAuth("test", "test").Get(srcBaseURL + "/v2/" + testImage + "/tags/list")
			So(resp, ShouldNotBeNil)
			So(resp.StatusCode(), ShouldEqual, 200)

			err := json.Unmarshal(resp.Body(), &srcTagsList)
			if err != nil {
				panic(err)
			}

			resp, err = destClient.R().Get(destBaseURL + "/v2/" + "inexistent" + "/manifests/" + testImageTag)
			So(err, ShouldBeNil)
			So(resp.StatusCode(), ShouldEqual, 404)

			resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + "inexistent")
			So(err, ShouldBeNil)
			So(resp.StatusCode(), ShouldEqual, 404)

			resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
			So(err, ShouldBeNil)
			So(resp.StatusCode(), ShouldEqual, 200)

			err = dctlr.StoreController.DefaultStore.DeleteImageManifest(testImage, testImageTag)
			So(err, ShouldBeNil)

			resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + "1.1.1")
			So(err, ShouldBeNil)
			So(resp.StatusCode(), ShouldEqual, 404)

			resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
			So(err, ShouldBeNil)
			So(resp.StatusCode(), ShouldEqual, 200)

			resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/tags/list")
			if err != nil {
				panic(err)
			}

			err = json.Unmarshal(resp.Body(), &destTagsList)
			if err != nil {
				panic(err)
			}

			So(destTagsList, ShouldResemble, srcTagsList)
		})
	})
}

func TestSyncBadURL(t *testing.T) {
	Convey("Verify sync with bad url", t, func() {
		updateDuration, _ := time.ParseDuration("1h")

		regex := ".*"
		var semver bool
		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					Prefix: testImage,
					Tags: &sync.Tags{
						Regex:  &regex,
						Semver: &semver,
					},
				},
			},
			URL:          "bad-registry-url",
			PollInterval: updateDuration,
			TLSVerify:    &tlsVerify,
			CertDir:      "",
			OnDemand:     true,
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		resp, err := destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		defer func() {
			dctlr.Shutdown()
		}()
	})
}

func TestSyncNoImagesByRegex(t *testing.T) {
	Convey("Verify sync with no images on source based on regex", t, func() {
		updateDuration, _ := time.ParseDuration("1h")

		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(false, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		regex := "9.9.9"
		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					Prefix: testImage,
					Tags: &sync.Tags{
						Regex: &regex,
					},
				},
			},
			URL:          srcBaseURL,
			TLSVerify:    &tlsVerify,
			PollInterval: updateDuration,
			CertDir:      "",
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		resp, err := destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		resp, err = destClient.R().Get(destBaseURL + "/v2/_catalog")
		So(err, ShouldBeNil)
		So(resp, ShouldNotBeEmpty)
		So(resp.StatusCode(), ShouldEqual, 200)

		var c catalog
		err = json.Unmarshal(resp.Body(), &c)
		if err != nil {
			panic(err)
		}

		So(c.Repositories, ShouldResemble, []string{})
	})
}

func TestSyncInvalidRegex(t *testing.T) {
	Convey("Verify sync with invalid regex", t, func() {
		updateDuration, _ := time.ParseDuration("1h")

		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(false, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		regex := "["
		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					Prefix: testImage,
					Tags: &sync.Tags{
						Regex: &regex,
					},
				},
			},
			URL:          srcBaseURL,
			TLSVerify:    &tlsVerify,
			PollInterval: updateDuration,
			CertDir:      "",
			OnDemand:     true,
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, _, destDir, _ := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()
	})
}

func TestSyncNotSemver(t *testing.T) {
	Convey("Verify sync feature semver compliant", t, func() {
		updateDuration, _ := time.ParseDuration("30m")

		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(false, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		// get manifest so we can update it with a semver non compliant tag
		resp, err := resty.R().Get(srcBaseURL + "/v2/zot-test/manifests/0.0.1")
		So(err, ShouldBeNil)
		So(resp, ShouldNotBeNil)
		So(resp.StatusCode(), ShouldEqual, 200)

		manifestBlob := resp.Body()

		resp, err = resty.R().SetHeader("Content-type", "application/vnd.oci.image.manifest.v1+json").
			SetBody(manifestBlob).
			Put(srcBaseURL + "/v2/" + testImage + "/manifests/notSemverTag")
		So(err, ShouldBeNil)
		So(resp, ShouldNotBeNil)
		So(resp.StatusCode(), ShouldEqual, 201)

		semver := true
		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					Prefix: testImage,
					Tags: &sync.Tags{
						Semver: &semver,
					},
				},
			},
			URL:          srcBaseURL,
			PollInterval: updateDuration,
			TLSVerify:    &tlsVerify,
			CertDir:      "",
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		var destTagsList TagsList

		for {
			resp, err = destClient.R().Get(destBaseURL + "/v2/" + testImage + "/tags/list")
			So(err, ShouldBeNil)
			So(resp, ShouldNotBeNil)

			err = json.Unmarshal(resp.Body(), &destTagsList)
			if err != nil {
				panic(err)
			}
			if len(destTagsList.Tags) > 0 {
				break
			}

			time.Sleep(500 * time.Millisecond)
		}

		So(len(destTagsList.Tags), ShouldEqual, 1)
		So(destTagsList.Tags[0], ShouldEqual, testImageTag)
	})
}

func TestSyncInvalidCerts(t *testing.T) {
	Convey("Verify sync with bad certs", t, func() {
		updateDuration, _ := time.ParseDuration("1h")

		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(true, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		// copy client certs, use them in sync config
		clientCertDir, err := ioutil.TempDir("", "certs")
		if err != nil {
			panic(err)
		}

		destFilePath := path.Join(clientCertDir, "ca.crt")
		err = copyFile(CACert, destFilePath)
		if err != nil {
			panic(err)
		}

		dstfile, err := os.OpenFile(destFilePath, os.O_TRUNC|os.O_WRONLY|os.O_CREATE, 0o600)
		if err != nil {
			panic(err)
		}

		defer dstfile.Close()

		if _, err = dstfile.WriteString("Add Invalid Text In Cert"); err != nil {
			panic(err)
		}

		destFilePath = path.Join(clientCertDir, "client.cert")
		err = copyFile(ClientCert, destFilePath)
		if err != nil {
			panic(err)
		}

		destFilePath = path.Join(clientCertDir, "client.key")
		err = copyFile(ClientKey, destFilePath)
		if err != nil {
			panic(err)
		}

		defer os.RemoveAll(clientCertDir)

		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					Prefix: "",
				},
			},
			URL:          srcBaseURL,
			PollInterval: updateDuration,
			TLSVerify:    &tlsVerify,
			CertDir:      clientCertDir,
			OnDemand:     true,
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		resp, err := destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		defer func() {
			dctlr.Shutdown()
		}()
	})
}

func makeCredentialsFile(fileContent string) string {
	tmpfile, err := ioutil.TempFile("", "sync-credentials-")
	if err != nil {
		panic(err)
	}

	content := []byte(fileContent)
	if err := ioutil.WriteFile(tmpfile.Name(), content, 0o600); err != nil {
		panic(err)
	}

	return tmpfile.Name()
}

func TestSyncInvalidUrl(t *testing.T) {
	Convey("Verify sync invalid url", t, func() {
		updateDuration, _ := time.ParseDuration("30m")
		regex := ".*"
		var semver bool
		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					// won't match any image on source registry, we will sync on demand
					Prefix: "dummy",
					Tags: &sync.Tags{
						Regex:  &regex,
						Semver: &semver,
					},
				},
			},
			URL:          "http://invalid.invalid/invalid/",
			PollInterval: updateDuration,
			TLSVerify:    &tlsVerify,
			CertDir:      "",
			OnDemand:     true,
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		resp, err := destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)
	})
}

func TestSyncInvalidTags(t *testing.T) {
	Convey("Verify sync invalid tags", t, func() {
		updateDuration, _ := time.ParseDuration("30m")

		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(false, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		regex := ".*"
		var semver bool
		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					// won't match any image on source registry, we will sync on demand
					Prefix: "dummy",
					Tags: &sync.Tags{
						Regex:  &regex,
						Semver: &semver,
					},
				},
			},
			URL:          srcBaseURL,
			PollInterval: updateDuration,
			TLSVerify:    &tlsVerify,
			CertDir:      "",
			OnDemand:     true,
		}

		syncConfig := &sync.Config{
			Registries: []sync.RegistryConfig{syncRegistryConfig},
		}

		dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		resp, err := destClient.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + "invalid:tag")
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)
	})
}

func TestSyncSubPaths(t *testing.T) {
	Convey("Verify sync with storage subPaths", t, func() {
		updateDuration, _ := time.ParseDuration("30m")

		srcPort := GetFreePort()
		srcConfig := config.New()
		client := resty.New()
		srcBaseURL := GetBaseURL(srcPort)

		srcConfig.HTTP.Port = srcPort

		srcDir, err := ioutil.TempDir("", "oci-src-repo-test")
		if err != nil {
			panic(err)
		}

		subpath := "/subpath"

		err = CopyFiles("../../../test/data", path.Join(srcDir, subpath))
		if err != nil {
			panic(err)
		}

		srcConfig.Storage.RootDirectory = srcDir

		sctlr := api.NewController(srcConfig)

		go func() {
			// this blocks
			if err := sctlr.Run(); err != nil {
				return
			}
		}()

		// wait till ready
		for {
			_, err := client.R().Get(srcBaseURL)
			if err == nil {
				break
			}

			time.Sleep(100 * time.Millisecond)
		}

		defer func() {
			sctlr.Shutdown()
		}()

		regex := ".*"
		var semver bool
		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					Prefix: path.Join(subpath, testImage),
					Tags: &sync.Tags{
						Regex:  &regex,
						Semver: &semver,
					},
				},
			},
			URL:          srcBaseURL,
			PollInterval: updateDuration,
			TLSVerify:    &tlsVerify,
			CertDir:      "",
			OnDemand:     true,
		}

		syncConfig := &sync.Config{
			Registries: []sync.RegistryConfig{syncRegistryConfig},
		}

		destPort := GetFreePort()
		destConfig := config.New()

		destDir, err := ioutil.TempDir("", "oci-dest-repo-test")
		if err != nil {
			panic(err)
		}
		defer os.RemoveAll(destDir)

		subPathDestDir, err := ioutil.TempDir("", "oci-dest-subpath-repo-test")
		if err != nil {
			panic(err)
		}
		defer os.RemoveAll(subPathDestDir)

		destConfig.Storage.RootDirectory = destDir

		destConfig.Storage.SubPaths = map[string]config.StorageConfig{
			subpath: {
				RootDirectory: subPathDestDir,
				GC:            true,
				Dedupe:        true,
			},
		}

		destBaseURL := GetBaseURL(destPort)
		destConfig.HTTP.Port = destPort

		destConfig.Extensions = &extconf.ExtensionConfig{}
		destConfig.Extensions.Search = nil
		destConfig.Extensions.Sync = syncConfig

		dctlr := api.NewController(destConfig)

		go func() {
			// this blocks
			if err := dctlr.Run(); err != nil {
				return
			}
		}()

		// wait till ready
		for {
			_, err := resty.R().Get(destBaseURL)
			if err == nil {
				break
			}

			time.Sleep(100 * time.Millisecond)
		}

		defer func() {
			dctlr.Shutdown()
		}()

		var destTagsList TagsList

		for {
			resp, err := resty.R().Get(destBaseURL + "/v2" + path.Join(subpath, testImage) + "/tags/list")
			if err != nil {
				panic(err)
			}

			err = json.Unmarshal(resp.Body(), &destTagsList)
			if err != nil {
				panic(err)
			}

			if len(destTagsList.Tags) > 0 {
				break
			}

			time.Sleep(500 * time.Millisecond)
		}

		// synced image should get into subpath instead of rootDir
		binfo, err := os.Stat(path.Join(subPathDestDir, subpath, testImage, "blobs/sha256"))
		So(binfo, ShouldNotBeNil)
		So(err, ShouldBeNil)

		// check rootDir is not populated with any image.
		binfo, err = os.Stat(path.Join(destDir, subpath))
		So(binfo, ShouldBeNil)
		So(err, ShouldNotBeNil)
	})
}

func TestSyncOnDemandRepoErr(t *testing.T) {
	Convey("Verify sync on demand parseRepositoryReference error", t, func() {
		tlsVerify := false
		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					// will sync on demand, should not be filtered out
					Prefix: testImage,
				},
			},
			URL:       "docker://invalid",
			TLSVerify: &tlsVerify,
			CertDir:   "",
			OnDemand:  true,
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, destBaseURL, destDir, _ := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		resp, err := resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)
	})
}

func TestSyncOnDemandContentFiltering(t *testing.T) {
	Convey("Verify sync on demand feature", t, func() {
		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(false, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		Convey("Test image is filtered out by content", func() {
			regex := ".*"
			var semver bool
			var tlsVerify bool

			syncRegistryConfig := sync.RegistryConfig{
				Content: []sync.Content{
					{
						// should be filtered out
						Prefix: "dummy",
						Tags: &sync.Tags{
							Regex:  &regex,
							Semver: &semver,
						},
					},
				},
				URL:       srcBaseURL,
				TLSVerify: &tlsVerify,
				CertDir:   "",
				OnDemand:  true,
			}

			syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

			dctlr, destBaseURL, destDir, _ := startDownstreamServer(false, syncConfig)
			defer os.RemoveAll(destDir)

			defer func() {
				dctlr.Shutdown()
			}()

			resp, err := resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
			So(err, ShouldBeNil)
			So(resp.StatusCode(), ShouldEqual, 404)
		})

		Convey("Test image is not filtered out by content", func() {
			regex := ".*"
			semver := true
			var tlsVerify bool

			syncRegistryConfig := sync.RegistryConfig{
				Content: []sync.Content{
					{
						// will sync on demand, should not be filtered out
						Prefix: testImage,
						Tags: &sync.Tags{
							Regex:  &regex,
							Semver: &semver,
						},
					},
				},
				URL:       srcBaseURL,
				TLSVerify: &tlsVerify,
				CertDir:   "",
				OnDemand:  true,
			}

			syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

			dctlr, destBaseURL, destDir, _ := startDownstreamServer(false, syncConfig)
			defer os.RemoveAll(destDir)

			defer func() {
				dctlr.Shutdown()
			}()

			resp, err := resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
			So(err, ShouldBeNil)
			So(resp.StatusCode(), ShouldEqual, 200)
		})
	})
}

func TestSyncConfigRules(t *testing.T) {
	Convey("Verify sync config rules", t, func() {
		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(false, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		Convey("Test periodically sync is disabled when pollInterval is not set", func() {
			regex := ".*"
			var semver bool
			var tlsVerify bool

			syncRegistryConfig := sync.RegistryConfig{
				Content: []sync.Content{
					{
						Prefix: testImage,
						Tags: &sync.Tags{
							Regex:  &regex,
							Semver: &semver,
						},
					},
				},
				URL:       srcBaseURL,
				TLSVerify: &tlsVerify,
				CertDir:   "",
				OnDemand:  false,
			}

			syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

			dctlr, destBaseURL, destDir, _ := startDownstreamServer(false, syncConfig)
			defer os.RemoveAll(destDir)

			defer func() {
				dctlr.Shutdown()
			}()

			// image should not be synced
			resp, err := resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
			So(err, ShouldBeNil)
			So(resp.StatusCode(), ShouldEqual, 404)
		})

		Convey("Test periodically sync is disabled when content is not set", func() {
			var tlsVerify bool
			updateDuration, _ := time.ParseDuration("30m")

			syncRegistryConfig := sync.RegistryConfig{
				PollInterval: updateDuration,
				URL:          srcBaseURL,
				TLSVerify:    &tlsVerify,
				CertDir:      "",
				OnDemand:     false,
			}

			syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

			dctlr, destBaseURL, destDir, _ := startDownstreamServer(false, syncConfig)
			defer os.RemoveAll(destDir)

			defer func() {
				dctlr.Shutdown()
			}()

			resp, err := resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
			So(err, ShouldBeNil)
			So(resp.StatusCode(), ShouldEqual, 404)
		})

		Convey("Test ondemand sync is disabled when ondemand is false", func() {
			var tlsVerify bool

			syncRegistryConfig := sync.RegistryConfig{
				URL:       srcBaseURL,
				TLSVerify: &tlsVerify,
				CertDir:   "",
				OnDemand:  false,
			}

			syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

			dctlr, destBaseURL, destDir, _ := startDownstreamServer(false, syncConfig)
			defer os.RemoveAll(destDir)

			defer func() {
				dctlr.Shutdown()
			}()

			resp, err := resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
			So(err, ShouldBeNil)
			So(resp.StatusCode(), ShouldEqual, 404)
		})
	})
}

func TestSyncSignatures(t *testing.T) {
	Convey("Verify sync signatures", t, func() {
		updateDuration, _ := time.ParseDuration("30m")

		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(false, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		// create repo, push and sign it
		repoName := "signed-repo"
		var digest godigest.Digest
		So(func() { digest = pushRepo(srcBaseURL, repoName) }, ShouldNotPanic)

		splittedURL := strings.SplitAfter(srcBaseURL, ":")
		srcPort := splittedURL[len(splittedURL)-1]

		cwd, err := os.Getwd()
		So(err, ShouldBeNil)

		defer func() { _ = os.Chdir(cwd) }()
		tdir, err := ioutil.TempDir("", "sigs")
		So(err, ShouldBeNil)
		defer os.RemoveAll(tdir)
		_ = os.Chdir(tdir)

		So(func() { signImage(tdir, srcPort, repoName, digest) }, ShouldNotPanic)

		regex := ".*"
		var semver bool
		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					// won't match any image on source registry, we will sync on demand
					Prefix: repoName,
					Tags: &sync.Tags{
						Regex:  &regex,
						Semver: &semver,
					},
				},
			},
			URL:          srcBaseURL,
			PollInterval: updateDuration,
			TLSVerify:    &tlsVerify,
			CertDir:      "",
			OnDemand:     true,
		}

		syncConfig := &sync.Config{
			Registries: []sync.RegistryConfig{syncRegistryConfig},
		}

		dctlr, destBaseURL, destDir, destClient := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		// wait for sync
		var destTagsList TagsList

		for {
			resp, err := destClient.R().Get(destBaseURL + "/v2/" + repoName + "/tags/list")
			if err != nil {
				panic(err)
			}

			err = json.Unmarshal(resp.Body(), &destTagsList)
			if err != nil {
				panic(err)
			}

			if len(destTagsList.Tags) > 0 {
				break
			}

			time.Sleep(500 * time.Millisecond)
		}

		splittedURL = strings.SplitAfter(destBaseURL, ":")
		destPort := splittedURL[len(splittedURL)-1]

		a := &options.AnnotationOptions{Annotations: []string{"tag=1.0"}}
		amap, err := a.AnnotationsMap()
		if err != nil {
			panic(err)
		}

		// notation verify the image
		image := fmt.Sprintf("localhost:%s/%s:%s", destPort, repoName, "1.0")
		cmd := exec.Command("notation", "verify", "--cert", "good", "--plain-http", image)
		out, err := cmd.CombinedOutput()
		So(err, ShouldBeNil)
		msg := string(out)
		So(msg, ShouldNotBeEmpty)
		So(strings.Contains(msg, "verification failure"), ShouldBeFalse)

		// cosign verify the image
		vrfy := verify.VerifyCommand{
			RegistryOptions: options.RegistryOptions{AllowInsecure: true},
			CheckClaims:     true,
			KeyRef:          path.Join(tdir, "cosign.pub"),
			Annotations:     amap,
		}
		err = vrfy.Exec(context.TODO(), []string{fmt.Sprintf("localhost:%s/%s:%s", destPort, repoName, "1.0")})
		So(err, ShouldBeNil)

		// test negative cases (trigger errors)
		// test notary signatures errors

		// based on manifest digest get referrers
		getReferrersURL := srcBaseURL + path.Join("/oras/artifacts/v1/", repoName, "manifests", digest.String(), "referrers")

		resp, err := resty.R().
			SetHeader("Content-Type", "application/json").
			SetQueryParam("artifactType", "application/vnd.cncf.notary.v2.signature").
			Get(getReferrersURL)

		So(err, ShouldBeNil)
		So(resp, ShouldNotBeEmpty)

		var referrers ReferenceList

		err = json.Unmarshal(resp.Body(), &referrers)
		So(err, ShouldBeNil)

		// read manifest
		var nm artifactspec.Manifest
		for _, ref := range referrers.References {
			refPath := path.Join(srcDir, repoName, "blobs", string(ref.Digest.Algorithm()), ref.Digest.Hex())
			body, err := ioutil.ReadFile(refPath)
			So(err, ShouldBeNil)

			err = json.Unmarshal(body, &nm)
			So(err, ShouldBeNil)

			// triggers perm denied on sig blobs
			for _, blob := range nm.Blobs {
				blobPath := path.Join(srcDir, repoName, "blobs", string(blob.Digest.Algorithm()), blob.Digest.Hex())
				err := os.Chmod(blobPath, 0o000)
				So(err, ShouldBeNil)
			}
		}

		// err = os.Chmod(path.Join(srcDir, repoName, "index.json"), 0000)
		// if err != nil {
		// 	panic(err)
		// }

		resp, err = resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		for _, blob := range nm.Blobs {
			srcBlobPath := path.Join(srcDir, repoName, "blobs", string(blob.Digest.Algorithm()), blob.Digest.Hex())
			err := os.Chmod(srcBlobPath, 0o755)
			So(err, ShouldBeNil)

			destBlobPath := path.Join(destDir, repoName, "blobs", string(blob.Digest.Algorithm()), blob.Digest.Hex())
			err = os.Remove(destBlobPath)
			So(err, ShouldBeNil)
			err = os.MkdirAll(destBlobPath, 0o000)
			So(err, ShouldBeNil)
		}

		resp, err = resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		// clean
		for _, blob := range nm.Blobs {
			destBlobPath := path.Join(destDir, repoName, "blobs", string(blob.Digest.Algorithm()), blob.Digest.Hex())
			err = os.Chmod(destBlobPath, 0o755)
			So(err, ShouldBeNil)
			err = os.Remove(destBlobPath)
			So(err, ShouldBeNil)
		}

		// test cosign signatures errors
		// based on manifest digest get cosign manifest
		cosignEncodedDigest := strings.Replace(digest.String(), ":", "-", 1) + ".sig"
		getCosignManifestURL := srcBaseURL + path.Join("/v2", repoName, "manifests", cosignEncodedDigest)

		mResp, err := resty.R().Get(getCosignManifestURL)
		So(err, ShouldBeNil)

		var cm ispec.Manifest

		err = json.Unmarshal(mResp.Body(), &cm)
		So(err, ShouldBeNil)

		for _, blob := range cm.Layers {
			blobPath := path.Join(srcDir, repoName, "blobs", string(blob.Digest.Algorithm()), blob.Digest.Hex())
			err := os.Chmod(blobPath, 0o000)
			So(err, ShouldBeNil)
		}

		resp, err = resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		for _, blob := range cm.Layers {
			srcBlobPath := path.Join(srcDir, repoName, "blobs", string(blob.Digest.Algorithm()), blob.Digest.Hex())
			err := os.Chmod(srcBlobPath, 0o755)
			So(err, ShouldBeNil)

			destBlobPath := path.Join(destDir, repoName, "blobs", string(blob.Digest.Algorithm()), blob.Digest.Hex())
			err = os.Remove(destBlobPath)
			So(err, ShouldBeNil)
			err = os.MkdirAll(destBlobPath, 0o000)
			So(err, ShouldBeNil)
		}

		resp, err = resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		for _, blob := range cm.Layers {
			destBlobPath := path.Join(destDir, repoName, "blobs", string(blob.Digest.Algorithm()), blob.Digest.Hex())
			err = os.Chmod(destBlobPath, 0o755)
			So(err, ShouldBeNil)
			err = os.Remove(destBlobPath)
			So(err, ShouldBeNil)
		}

		// trigger error on config blob
		srcConfigBlobPath := path.Join(srcDir, repoName, "blobs", string(cm.Config.Digest.Algorithm()),
			cm.Config.Digest.Hex())
		err = os.Chmod(srcConfigBlobPath, 0o000)
		So(err, ShouldBeNil)

		resp, err = resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)

		err = os.Chmod(srcConfigBlobPath, 0o755)
		So(err, ShouldBeNil)

		destConfigBlobPath := path.Join(destDir, repoName, "blobs", string(cm.Config.Digest.Algorithm()),
			cm.Config.Digest.Hex())
		err = os.Remove(destConfigBlobPath)
		So(err, ShouldBeNil)
		err = os.MkdirAll(destConfigBlobPath, 0o000)
		So(err, ShouldBeNil)

		resp, err = resty.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)
	})
}

func TestSyncError(t *testing.T) {
	Convey("Verify periodically sync pushSyncedLocalImage() error", t, func() {
		updateDuration, _ := time.ParseDuration("30m")

		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(false, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		regex := ".*"
		semver := true
		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			Content: []sync.Content{
				{
					Prefix: testImage,
					Tags: &sync.Tags{
						Regex:  &regex,
						Semver: &semver,
					},
				},
			},
			URL:          srcBaseURL,
			PollInterval: updateDuration,
			TLSVerify:    &tlsVerify,
			CertDir:      "",
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, destBaseURL, destDir, client := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		// give permission denied on pushSyncedLocalImage()
		localRepoPath := path.Join(destDir, testImage, "blobs")
		err := os.MkdirAll(localRepoPath, 0o000)
		So(err, ShouldBeNil)

		resp, err := client.R().Get(destBaseURL + "/v2/" + testImage + "/manifests/" + testImageTag)
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)
	})
}

func TestSyncSignaturesOnDemand(t *testing.T) {
	Convey("Verify sync signatures on demand feature", t, func() {
		sctlr, srcBaseURL, srcDir, _, _ := startUpstreamServer(false, false)
		defer os.RemoveAll(srcDir)

		defer func() {
			sctlr.Shutdown()
		}()

		// create repo, push and sign it
		repoName := "signed-repo"
		var digest godigest.Digest
		So(func() { digest = pushRepo(srcBaseURL, repoName) }, ShouldNotPanic)

		splittedURL := strings.SplitAfter(srcBaseURL, ":")
		srcPort := splittedURL[len(splittedURL)-1]

		cwd, err := os.Getwd()
		So(err, ShouldBeNil)

		defer func() { _ = os.Chdir(cwd) }()
		tdir, err := ioutil.TempDir("", "sigs")
		So(err, ShouldBeNil)
		defer os.RemoveAll(tdir)
		_ = os.Chdir(tdir)

		So(func() { signImage(tdir, srcPort, repoName, digest) }, ShouldNotPanic)

		var tlsVerify bool

		syncRegistryConfig := sync.RegistryConfig{
			URL:       srcBaseURL,
			TLSVerify: &tlsVerify,
			CertDir:   "",
			OnDemand:  true,
		}

		syncConfig := &sync.Config{Registries: []sync.RegistryConfig{syncRegistryConfig}}

		dctlr, destBaseURL, destDir, _ := startDownstreamServer(false, syncConfig)
		defer os.RemoveAll(destDir)

		defer func() {
			dctlr.Shutdown()
		}()

		// sync on demand
		resp, err := resty.R().Get(destBaseURL + "/v2/" + repoName + "/manifests/1.0")
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 200)

		splittedURL = strings.SplitAfter(destBaseURL, ":")
		destPort := splittedURL[len(splittedURL)-1]

		a := &options.AnnotationOptions{Annotations: []string{"tag=1.0"}}
		amap, err := a.AnnotationsMap()
		if err != nil {
			panic(err)
		}

		// notation verify the synced image
		image := fmt.Sprintf("localhost:%s/%s:%s", destPort, repoName, "1.0")
		cmd := exec.Command("notation", "verify", "--cert", "good", "--plain-http", image)
		out, err := cmd.CombinedOutput()
		So(err, ShouldBeNil)
		msg := string(out)
		So(msg, ShouldNotBeEmpty)
		So(strings.Contains(msg, "verification failure"), ShouldBeFalse)

		// cosign verify the synced image
		vrfy := verify.VerifyCommand{
			RegistryOptions: options.RegistryOptions{AllowInsecure: true},
			CheckClaims:     true,
			KeyRef:          path.Join(tdir, "cosign.pub"),
			Annotations:     amap,
		}
		err = vrfy.Exec(context.TODO(), []string{fmt.Sprintf("localhost:%s/%s:%s", destPort, repoName, "1.0")})
		So(err, ShouldBeNil)

		// test negative case
		cosignEncodedDigest := strings.Replace(digest.String(), ":", "-", 1) + ".sig"
		getCosignManifestURL := srcBaseURL + path.Join("/v2", repoName, "manifests", cosignEncodedDigest)

		mResp, err := resty.R().Get(getCosignManifestURL)
		So(err, ShouldBeNil)

		var cm ispec.Manifest

		err = json.Unmarshal(mResp.Body(), &cm)
		So(err, ShouldBeNil)

		// trigger error on config blob
		srcConfigBlobPath := path.Join(srcDir, repoName, "blobs", string(cm.Config.Digest.Algorithm()),
			cm.Config.Digest.Hex())
		err = os.Chmod(srcConfigBlobPath, 0o000)
		So(err, ShouldBeNil)

		// remove already synced image
		err = os.RemoveAll(path.Join(destDir, repoName))
		So(err, ShouldBeNil)

		// sync on demand
		resp, err = resty.R().Get(destBaseURL + "/v2/" + repoName + "/manifests/1.0")
		So(err, ShouldBeNil)
		So(resp.StatusCode(), ShouldEqual, 404)
	})
}

func signImage(tdir, port, repoName string, digest godigest.Digest) {
	// push signatures to upstream server so that we can sync them later
	// generate a keypair
	os.Setenv("COSIGN_PASSWORD", "")

	err := generate.GenerateKeyPairCmd(context.TODO(), "", nil)
	if err != nil {
		panic(err)
	}

	// sign the image
	err = sign.SignCmd(context.TODO(),
		sign.KeyOpts{KeyRef: path.Join(tdir, "cosign.key"), PassFunc: generate.GetPass},
		options.RegistryOptions{AllowInsecure: true},
		map[string]interface{}{"tag": "1.0"},
		[]string{fmt.Sprintf("localhost:%s/%s@%s", port, repoName, digest.String())},
		"", true, "", false, false, "")
	if err != nil {
		panic(err)
	}

	// verify the image
	a := &options.AnnotationOptions{Annotations: []string{"tag=1.0"}}

	amap, err := a.AnnotationsMap()
	if err != nil {
		panic(err)
	}

	vrfy := verify.VerifyCommand{
		RegistryOptions: options.RegistryOptions{AllowInsecure: true},
		CheckClaims:     true,
		KeyRef:          path.Join(tdir, "cosign.pub"),
		Annotations:     amap,
	}

	err = vrfy.Exec(context.TODO(), []string{fmt.Sprintf("localhost:%s/%s:%s", port, repoName, "1.0")})
	if err != nil {
		panic(err)
	}

	// "notation" (notaryv2) doesn't yet support exported apis, so use the binary instead
	_, err = exec.LookPath("notation")
	if err != nil {
		panic(err)
	}

	os.Setenv("XDG_CONFIG_HOME", tdir)

	// generate a keypair
	cmd := exec.Command("notation", "cert", "generate-test", "--trust", "good")

	err = cmd.Run()
	if err != nil {
		panic(err)
	}

	// sign the image
	image := fmt.Sprintf("localhost:%s/%s:%s", port, repoName, "1.0")
	cmd = exec.Command("notation", "sign", "--key", "good", "--plain-http", image)

	err = cmd.Run()
	if err != nil {
		panic(err)
	}

	// verify the image
	cmd = exec.Command("notation", "verify", "--cert", "good", "--plain-http", image)
	out, err := cmd.CombinedOutput()
	So(err, ShouldBeNil)

	msg := string(out)
	So(msg, ShouldNotBeEmpty)
	So(strings.Contains(msg, "verification failure"), ShouldBeFalse)
}

func pushRepo(url, repoName string) godigest.Digest {
	// create a blob/layer
	resp, err := resty.R().Post(url + fmt.Sprintf("/v2/%s/blobs/uploads/", repoName))
	if err != nil {
		panic(err)
	}

	loc := Location(url, resp)

	_, err = resty.R().Get(loc)
	if err != nil {
		panic(err)
	}

	content := []byte("this is a blob")
	digest := godigest.FromBytes(content)

	_, err = resty.R().SetQueryParam("digest", digest.String()).
		SetHeader("Content-Type", "application/octet-stream").SetBody(content).Put(loc)
	if err != nil {
		panic(err)
	}

	// create a manifest
	manifest := ispec.Manifest{
		Config: ispec.Descriptor{
			Digest: digest,
			Size:   int64(len(content)),
		},
		Layers: []ispec.Descriptor{
			{
				MediaType: "application/vnd.oci.image.layer.v1.tar",
				Digest:    digest,
				Size:      int64(len(content)),
			},
		},
	}

	manifest.SchemaVersion = 2

	content, err = json.Marshal(manifest)
	if err != nil {
		panic(err)
	}

	digest = godigest.FromBytes(content)

	_, err = resty.R().SetHeader("Content-Type", "application/vnd.oci.image.manifest.v1+json").
		SetBody(content).Put(url + fmt.Sprintf("/v2/%s/manifests/1.0", repoName))
	if err != nil {
		panic(err)
	}

	return digest
}