/*
Copyright 2022 The Flux authors

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package controllers

import (
	"crypto/rand"
	"crypto/rsa"
	"crypto/tls"
	"crypto/x509"
	"crypto/x509/pkix"
	"encoding/pem"
	"errors"
	"fmt"
	coptions "github.com/sigstore/cosign/cmd/cosign/cli/options"
	"github.com/sigstore/cosign/cmd/cosign/cli/sign"
	"github.com/sigstore/cosign/pkg/cosign"
	"math/big"
	"net"
	"net/http"
	"net/http/httptest"
	"net/url"
	"os"
	"path"
	"path/filepath"
	"strings"
	"testing"
	"time"

	"github.com/darkowlzz/controller-check/status"
	"github.com/fluxcd/pkg/apis/meta"
	"github.com/fluxcd/pkg/oci"
	"github.com/fluxcd/pkg/runtime/conditions"
	"github.com/fluxcd/pkg/runtime/patch"
	"github.com/fluxcd/pkg/untar"
	sourcev1 "github.com/fluxcd/source-controller/api/v1beta2"
	serror "github.com/fluxcd/source-controller/internal/error"
	sreconcile "github.com/fluxcd/source-controller/internal/reconcile"
	"github.com/fluxcd/source-controller/pkg/git"
	"github.com/google/go-containerregistry/pkg/authn"
	"github.com/google/go-containerregistry/pkg/crane"
	"github.com/google/go-containerregistry/pkg/registry"
	gcrv1 "github.com/google/go-containerregistry/pkg/v1"
	"github.com/google/go-containerregistry/pkg/v1/mutate"
	. "github.com/onsi/gomega"
	corev1 "k8s.io/api/core/v1"
	apierrors "k8s.io/apimachinery/pkg/api/errors"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/client-go/tools/record"
	kstatus "sigs.k8s.io/cli-utils/pkg/kstatus/status"
	"sigs.k8s.io/controller-runtime/pkg/client"
	fakeclient "sigs.k8s.io/controller-runtime/pkg/client/fake"
	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
)

func TestOCIRepository_Reconcile(t *testing.T) {
	g := NewWithT(t)

	// Registry server with public images
	tmpDir := t.TempDir()
	regServer, err := setupRegistryServer(ctx, tmpDir, registryOptions{})
	if err != nil {
		g.Expect(err).ToNot(HaveOccurred())
	}

	podinfoVersions, err := pushMultiplePodinfoImages(regServer.registryHost, "6.1.4", "6.1.5", "6.1.6")

	tests := []struct {
		name           string
		url            string
		tag            string
		semver         string
		digest         string
		mediaType      string
		assertArtifact []artifactFixture
	}{
		{
			name:      "public tag",
			url:       podinfoVersions["6.1.6"].url,
			tag:       podinfoVersions["6.1.6"].tag,
			digest:    podinfoVersions["6.1.6"].digest.Hex,
			mediaType: "application/vnd.docker.image.rootfs.diff.tar.gzip",
			assertArtifact: []artifactFixture{
				{
					expectedPath:     "kustomize/deployment.yaml",
					expectedChecksum: "6fd625effe6bb805b6a78943ee082a4412e763edb7fcaed6e8fe644d06cbf423",
				},
				{
					expectedPath:     "kustomize/hpa.yaml",
					expectedChecksum: "d20e92e3b2926ebfee1644be0f4d0abadebfa95a8005c12f71bfd534a4be4ff9",
				},
			},
		},
		{
			name:   "public semver",
			url:    podinfoVersions["6.1.5"].url,
			semver: ">= 6.1 <= 6.1.5",
			digest: podinfoVersions["6.1.5"].digest.Hex,
			assertArtifact: []artifactFixture{
				{
					expectedPath:     "kustomize/deployment.yaml",
					expectedChecksum: "dce4f5f780a8e8994b06031e5b567bf488ceaaaabd9bd3fc278b4f3bfc8c577b",
				},
				{
					expectedPath:     "kustomize/hpa.yaml",
					expectedChecksum: "d20e92e3b2926ebfee1644be0f4d0abadebfa95a8005c12f71bfd534a4be4ff9",
				},
			},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			g := NewWithT(t)

			ns, err := testEnv.CreateNamespace(ctx, "ocirepository-reconcile-test")
			g.Expect(err).ToNot(HaveOccurred())
			defer func() { g.Expect(testEnv.Delete(ctx, ns)).To(Succeed()) }()

			obj := &sourcev1.OCIRepository{
				ObjectMeta: metav1.ObjectMeta{
					GenerateName: "ocirepository-reconcile",
					Namespace:    ns.Name,
				},
				Spec: sourcev1.OCIRepositorySpec{
					URL:       tt.url,
					Interval:  metav1.Duration{Duration: 60 * time.Minute},
					Reference: &sourcev1.OCIRepositoryRef{},
				},
			}

			if tt.tag != "" {
				obj.Spec.Reference.Tag = tt.tag
			}
			if tt.semver != "" {
				obj.Spec.Reference.SemVer = tt.semver
			}
			if tt.mediaType != "" {
				obj.Spec.LayerSelector = &sourcev1.OCILayerSelector{MediaType: tt.mediaType}
			}
			g.Expect(testEnv.Create(ctx, obj)).To(Succeed())

			key := client.ObjectKey{Name: obj.Name, Namespace: obj.Namespace}

			// Wait for the finalizer to be set
			g.Eventually(func() bool {
				if err := testEnv.Get(ctx, key, obj); err != nil {
					return false
				}
				return len(obj.Finalizers) > 0
			}, timeout).Should(BeTrue())

			// Wait for the object to be Ready
			g.Eventually(func() bool {
				if err := testEnv.Get(ctx, key, obj); err != nil {
					return false
				}
				if !conditions.IsReady(obj) {
					return false
				}
				readyCondition := conditions.Get(obj, meta.ReadyCondition)
				return obj.Generation == readyCondition.ObservedGeneration &&
					obj.Generation == obj.Status.ObservedGeneration
			}, timeout).Should(BeTrue())

			// Check if the revision matches the expected digest
			g.Expect(obj.Status.Artifact.Revision).To(Equal(tt.digest))

			// Check if the metadata matches the expected annotations
			g.Expect(obj.Status.Artifact.Metadata[oci.SourceAnnotation]).To(ContainSubstring("podinfo"))
			g.Expect(obj.Status.Artifact.Metadata[oci.RevisionAnnotation]).To(ContainSubstring(tt.tag))

			// Check if the artifact storage path matches the expected file path
			localPath := testStorage.LocalPath(*obj.Status.Artifact)
			t.Logf("artifact local path: %s", localPath)

			f, err := os.Open(localPath)
			g.Expect(err).ToNot(HaveOccurred())
			defer f.Close()

			// create a tmp directory to extract artifact
			tmp, err := os.MkdirTemp("", "ocirepository-test-")
			g.Expect(err).ToNot(HaveOccurred())
			defer os.RemoveAll(tmp)

			ep, err := untar.Untar(f, tmp)
			g.Expect(err).ToNot(HaveOccurred())
			t.Logf("extracted summary: %s", ep)

			for _, af := range tt.assertArtifact {
				expectedFile := filepath.Join(tmp, af.expectedPath)
				g.Expect(expectedFile).To(BeAnExistingFile())

				f2, err := os.Open(expectedFile)
				g.Expect(err).ToNot(HaveOccurred())
				defer f2.Close()

				h := testStorage.Checksum(f2)
				t.Logf("file %q hash: %q", expectedFile, h)
				g.Expect(h).To(Equal(af.expectedChecksum))
			}

			// Check if the object status is valid
			condns := &status.Conditions{NegativePolarity: ociRepositoryReadyCondition.NegativePolarity}
			checker := status.NewChecker(testEnv.Client, condns)
			checker.CheckErr(ctx, obj)

			// kstatus client conformance check
			u, err := patch.ToUnstructured(obj)
			g.Expect(err).ToNot(HaveOccurred())
			res, err := kstatus.Compute(u)
			g.Expect(err).ToNot(HaveOccurred())
			g.Expect(res.Status).To(Equal(kstatus.CurrentStatus))

			// Patch the object with reconcile request annotation.
			patchHelper, err := patch.NewHelper(obj, testEnv.Client)
			g.Expect(err).ToNot(HaveOccurred())
			annotations := map[string]string{
				meta.ReconcileRequestAnnotation: "now",
			}
			obj.SetAnnotations(annotations)
			g.Expect(patchHelper.Patch(ctx, obj)).ToNot(HaveOccurred())
			g.Eventually(func() bool {
				if err := testEnv.Get(ctx, key, obj); err != nil {
					return false
				}
				return obj.Status.LastHandledReconcileAt == "now"
			}, timeout).Should(BeTrue())

			// Wait for the object to be deleted
			g.Expect(testEnv.Delete(ctx, obj)).To(Succeed())
			g.Eventually(func() bool {
				if err := testEnv.Get(ctx, key, obj); err != nil {
					return apierrors.IsNotFound(err)
				}
				return false
			}, timeout).Should(BeTrue())
		})
	}
}

func TestOCIRepository_Reconcile_MediaType(t *testing.T) {
	g := NewWithT(t)

	// Registry server with public images
	tmpDir := t.TempDir()
	regServer, err := setupRegistryServer(ctx, tmpDir, registryOptions{})
	if err != nil {
		g.Expect(err).ToNot(HaveOccurred())
	}

	podinfoVersions, err := pushMultiplePodinfoImages(regServer.registryHost, "6.1.4", "6.1.5", "6.1.6")

	tests := []struct {
		name      string
		url       string
		tag       string
		mediaType string
		wantErr   bool
	}{
		{
			name: "Works with no media type",
			url:  podinfoVersions["6.1.4"].url,
			tag:  podinfoVersions["6.1.4"].tag,
		},
		{
			name:      "Works with Flux CLI media type",
			url:       podinfoVersions["6.1.5"].url,
			tag:       podinfoVersions["6.1.5"].tag,
			mediaType: "application/vnd.docker.image.rootfs.diff.tar.gzip",
		},
		{
			name:      "Fails with unknown media type",
			url:       podinfoVersions["6.1.6"].url,
			tag:       podinfoVersions["6.1.6"].tag,
			mediaType: "application/invalid.tar.gzip",
			wantErr:   true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {

			g := NewWithT(t)

			ns, err := testEnv.CreateNamespace(ctx, "ocirepository-mediatype-test")
			g.Expect(err).ToNot(HaveOccurred())
			defer func() { g.Expect(testEnv.Delete(ctx, ns)).To(Succeed()) }()

			obj := &sourcev1.OCIRepository{
				ObjectMeta: metav1.ObjectMeta{
					GenerateName: "ocirepository-reconcile",
					Namespace:    ns.Name,
				},
				Spec: sourcev1.OCIRepositorySpec{
					URL:      tt.url,
					Interval: metav1.Duration{Duration: 60 * time.Minute},
					Reference: &sourcev1.OCIRepositoryRef{
						Tag: tt.tag,
					},
					LayerSelector: &sourcev1.OCILayerSelector{
						MediaType: tt.mediaType,
					},
				},
			}

			g.Expect(testEnv.Create(ctx, obj)).To(Succeed())

			key := client.ObjectKey{Name: obj.Name, Namespace: obj.Namespace}

			// Wait for the finalizer to be set
			g.Eventually(func() bool {
				if err := testEnv.Get(ctx, key, obj); err != nil {
					return false
				}
				return len(obj.Finalizers) > 0
			}, timeout).Should(BeTrue())

			// Wait for the object to be reconciled
			g.Eventually(func() bool {
				if err := testEnv.Get(ctx, key, obj); err != nil {
					return false
				}
				readyCondition := conditions.Get(obj, meta.ReadyCondition)
				return readyCondition != nil
			}, timeout).Should(BeTrue())

			g.Expect(conditions.IsReady(obj)).To(BeIdenticalTo(!tt.wantErr))
			if tt.wantErr {
				g.Expect(conditions.Get(obj, meta.ReadyCondition).Message).Should(ContainSubstring("failed to find layer with media type"))
			}

			// Wait for the object to be deleted
			g.Expect(testEnv.Delete(ctx, obj)).To(Succeed())
			g.Eventually(func() bool {
				if err := testEnv.Get(ctx, key, obj); err != nil {
					return apierrors.IsNotFound(err)
				}
				return false
			}, timeout).Should(BeTrue())
		})
	}
}

func TestOCIRepository_reconcileSource_authStrategy(t *testing.T) {
	type secretOptions struct {
		username      string
		password      string
		includeSA     bool
		includeSecret bool
	}

	pool := x509.NewCertPool()
	pool.AppendCertsFromPEM(tlsCA)

	tests := []struct {
		name             string
		url              string
		registryOpts     registryOptions
		craneOpts        []crane.Option
		secretOpts       secretOptions
		tlsCertSecret    *corev1.Secret
		provider         string
		providerImg      string
		want             sreconcile.Result
		wantErr          bool
		assertConditions []metav1.Condition
	}{
		{
			name: "HTTP without basic auth",
			want: sreconcile.ResultSuccess,
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.ArtifactOutdatedCondition, "NewRevision", "new digest '<digest>' for '<url>'"),
				*conditions.TrueCondition(meta.ReconcilingCondition, "NewRevision", "new digest '<digest>' for '<url>'"),
			},
		},
		{
			name: "HTTP with basic auth secret",
			want: sreconcile.ResultSuccess,
			registryOpts: registryOptions{
				withBasicAuth: true,
			},
			craneOpts: []crane.Option{crane.WithAuth(&authn.Basic{
				Username: testRegistryUsername,
				Password: testRegistryPassword,
			}),
			},
			secretOpts: secretOptions{
				username:      testRegistryUsername,
				password:      testRegistryPassword,
				includeSecret: true,
			},
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(meta.ReconcilingCondition, "NewRevision", "new digest '<digest>' for '<url>'"),
				*conditions.TrueCondition(sourcev1.ArtifactOutdatedCondition, "NewRevision", "new digest '<digest>' for '<url>'"),
			},
		},
		{
			name: "HTTP with serviceaccount",
			want: sreconcile.ResultSuccess,
			registryOpts: registryOptions{
				withBasicAuth: true,
			},
			craneOpts: []crane.Option{crane.WithAuth(&authn.Basic{
				Username: testRegistryUsername,
				Password: testRegistryPassword,
			}),
			},
			secretOpts: secretOptions{
				username:  testRegistryUsername,
				password:  testRegistryPassword,
				includeSA: true,
			},
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(meta.ReconcilingCondition, "NewRevision", "new digest '<digest>' for '<url>'"),
				*conditions.TrueCondition(sourcev1.ArtifactOutdatedCondition, "NewRevision", "new digest '<digest>' for '<url>'"),
			},
		},
		{
			name: "HTTP registry - basic auth with missing secret",
			want: sreconcile.ResultEmpty,
			registryOpts: registryOptions{
				withBasicAuth: true,
			},
			wantErr: true,
			craneOpts: []crane.Option{crane.WithAuth(&authn.Basic{
				Username: testRegistryUsername,
				Password: testRegistryPassword,
			}),
			},
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.FetchFailedCondition, sourcev1.OCIPullFailedReason, "failed to pull artifact from "),
			},
		},
		{
			name:    "HTTP registry - basic auth with invalid secret",
			want:    sreconcile.ResultEmpty,
			wantErr: true,
			registryOpts: registryOptions{
				withBasicAuth: true,
			},
			craneOpts: []crane.Option{crane.WithAuth(&authn.Basic{
				Username: testRegistryUsername,
				Password: testRegistryPassword,
			}),
			},
			secretOpts: secretOptions{
				username:      "wrong-pass",
				password:      "wrong-pass",
				includeSecret: true,
			},
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.FetchFailedCondition, sourcev1.OCIPullFailedReason, "failed to pull artifact from "),
			},
		},
		{
			name:    "HTTP registry - basic auth with invalid serviceaccount",
			want:    sreconcile.ResultEmpty,
			wantErr: true,
			registryOpts: registryOptions{
				withBasicAuth: true,
			},
			craneOpts: []crane.Option{crane.WithAuth(&authn.Basic{
				Username: testRegistryUsername,
				Password: testRegistryPassword,
			}),
			},
			secretOpts: secretOptions{
				username:  "wrong-pass",
				password:  "wrong-pass",
				includeSA: true,
			},
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.FetchFailedCondition, sourcev1.OCIPullFailedReason, "failed to pull artifact from "),
			},
		},
		{
			name: "HTTPS with valid certfile",
			want: sreconcile.ResultSuccess,
			registryOpts: registryOptions{
				withTLS: true,
			},
			craneOpts: []crane.Option{crane.WithTransport(&http.Transport{
				TLSClientConfig: &tls.Config{
					RootCAs: pool,
				},
			}),
			},
			tlsCertSecret: &corev1.Secret{
				ObjectMeta: metav1.ObjectMeta{
					Name: "ca-file",
				},
				Data: map[string][]byte{
					"caFile": tlsCA,
				},
			},
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(meta.ReconcilingCondition, "NewRevision", "new digest '<digest>' for '<url>'"),
				*conditions.TrueCondition(sourcev1.ArtifactOutdatedCondition, "NewRevision", "new digest '<digest>' for '<url>'"),
			},
		},
		{
			name:    "HTTPS without certfile",
			want:    sreconcile.ResultEmpty,
			wantErr: true,
			registryOpts: registryOptions{
				withTLS: true,
			},
			craneOpts: []crane.Option{crane.WithTransport(&http.Transport{
				TLSClientConfig: &tls.Config{
					RootCAs: pool,
				},
			}),
			},
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.FetchFailedCondition, sourcev1.OCIPullFailedReason, "failed to pull artifact from "),
			},
		},
		{
			name:    "HTTPS with invalid certfile",
			want:    sreconcile.ResultEmpty,
			wantErr: true,
			registryOpts: registryOptions{
				withTLS: true,
			},
			craneOpts: []crane.Option{crane.WithTransport(&http.Transport{
				TLSClientConfig: &tls.Config{
					RootCAs: pool,
				},
			}),
			},
			tlsCertSecret: &corev1.Secret{
				ObjectMeta: metav1.ObjectMeta{
					Name: "ca-file",
				},
				Data: map[string][]byte{
					"caFile": []byte("invalid"),
				},
			},
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.FetchFailedCondition, sourcev1.OCIPullFailedReason, "failed to pull artifact from "),
			},
		},
		{
			name:        "with contextual login provider",
			wantErr:     true,
			provider:    "aws",
			providerImg: "oci://123456789000.dkr.ecr.us-east-2.amazonaws.com/test",
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.FetchFailedCondition, sourcev1.AuthenticationFailedReason, "failed to get credential from"),
			},
		},
		{
			name: "with contextual login provider and secretRef",
			want: sreconcile.ResultSuccess,
			registryOpts: registryOptions{
				withBasicAuth: true,
			},
			craneOpts: []crane.Option{crane.WithAuth(&authn.Basic{
				Username: testRegistryUsername,
				Password: testRegistryPassword,
			})},
			secretOpts: secretOptions{
				username:      testRegistryUsername,
				password:      testRegistryPassword,
				includeSecret: true,
			},
			provider: "azure",
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(meta.ReconcilingCondition, "NewRevision", "new digest '<digest>' for '<url>'"),
				*conditions.TrueCondition(sourcev1.ArtifactOutdatedCondition, "NewRevision", "new digest '<digest>' for '<url>'"),
			},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			g := NewWithT(t)

			builder := fakeclient.NewClientBuilder().WithScheme(testEnv.GetScheme())

			obj := &sourcev1.OCIRepository{
				ObjectMeta: metav1.ObjectMeta{
					GenerateName: "auth-strategy-",
				},
				Spec: sourcev1.OCIRepositorySpec{
					Interval: metav1.Duration{Duration: interval},
					Timeout:  &metav1.Duration{Duration: timeout},
				},
			}

			workspaceDir := t.TempDir()
			server, err := setupRegistryServer(ctx, workspaceDir, tt.registryOpts)

			g.Expect(err).NotTo(HaveOccurred())

			img, err := createPodinfoImageFromTar("podinfo-6.1.6.tar", "6.1.6", server.registryHost, tt.craneOpts...)
			g.Expect(err).ToNot(HaveOccurred())
			obj.Spec.URL = img.url
			obj.Spec.Reference = &sourcev1.OCIRepositoryRef{
				Tag: img.tag,
			}

			if tt.provider != "" {
				obj.Spec.Provider = tt.provider
			}
			// If a provider specific image is provided, overwrite existing URL
			// set earlier. It'll fail but it's necessary to set them because
			// the login check expects the URLs to be of certain pattern.
			if tt.providerImg != "" {
				obj.Spec.URL = tt.providerImg
			}

			if tt.secretOpts.username != "" && tt.secretOpts.password != "" {
				secret := &corev1.Secret{
					ObjectMeta: metav1.ObjectMeta{
						Name: "auth-secretref",
					},
					Type: corev1.SecretTypeDockerConfigJson,
					Data: map[string][]byte{
						".dockerconfigjson": []byte(fmt.Sprintf(`{"auths": {%q: {"username": %q, "password": %q}}}`,
							server.registryHost, tt.secretOpts.username, tt.secretOpts.password)),
					},
				}

				builder.WithObjects(secret)

				if tt.secretOpts.includeSA {
					serviceAccount := &corev1.ServiceAccount{
						ObjectMeta: metav1.ObjectMeta{
							Name: "sa-ocitest",
						},
						ImagePullSecrets: []corev1.LocalObjectReference{{Name: secret.Name}},
					}
					builder.WithObjects(serviceAccount)
					obj.Spec.ServiceAccountName = serviceAccount.Name
				}

				if tt.secretOpts.includeSecret {
					obj.Spec.SecretRef = &meta.LocalObjectReference{
						Name: secret.Name,
					}
				}
			}

			if tt.tlsCertSecret != nil {
				builder.WithObjects(tt.tlsCertSecret)
				obj.Spec.CertSecretRef = &meta.LocalObjectReference{
					Name: tt.tlsCertSecret.Name,
				}
			}

			r := &OCIRepositoryReconciler{
				Client:        builder.Build(),
				EventRecorder: record.NewFakeRecorder(32),
				Storage:       testStorage,
			}

			opts := r.craneOptions(ctx, true)
			opts = append(opts, crane.WithAuthFromKeychain(authn.DefaultKeychain))
			repoURL, err := r.getArtifactURL(obj, opts)
			g.Expect(err).To(BeNil())

			assertConditions := tt.assertConditions
			for k := range assertConditions {
				assertConditions[k].Message = strings.ReplaceAll(assertConditions[k].Message, "<digest>", img.digest.Hex)
				assertConditions[k].Message = strings.ReplaceAll(assertConditions[k].Message, "<url>", repoURL)
			}

			tmpDir := t.TempDir()
			got, err := r.reconcileSource(ctx, obj, &sourcev1.Artifact{}, tmpDir)
			if tt.wantErr {
				g.Expect(err).ToNot(BeNil())
			} else {
				g.Expect(err).To(BeNil())
			}
			g.Expect(got).To(Equal(tt.want))
			g.Expect(obj.Status.Conditions).To(conditions.MatchConditions(tt.assertConditions))
		})
	}
}

func TestOCIRepository_CertSecret(t *testing.T) {
	g := NewWithT(t)

	srv, rootCertPEM, clientCertPEM, clientKeyPEM, clientTLSCert, err := createTLSServer()
	g.Expect(err).ToNot(HaveOccurred())

	srv.StartTLS()
	defer srv.Close()

	transport := &http.Transport{
		TLSClientConfig: &tls.Config{},
	}
	// Use the server cert as a CA cert, so the client trusts the
	// server cert. (Only works because the server uses the same
	// cert in both roles).
	pool := x509.NewCertPool()
	pool.AddCert(srv.Certificate())
	transport.TLSClientConfig.RootCAs = pool
	transport.TLSClientConfig.Certificates = []tls.Certificate{clientTLSCert}

	srv.Client().Transport = transport
	pi, err := createPodinfoImageFromTar("podinfo-6.1.5.tar", "6.1.5", srv.URL, []crane.Option{
		crane.WithTransport(srv.Client().Transport),
	}...)
	g.Expect(err).NotTo(HaveOccurred())

	tlsSecretClientCert := corev1.Secret{
		StringData: map[string]string{
			oci.CACert:     string(rootCertPEM),
			oci.ClientCert: string(clientCertPEM),
			oci.ClientKey:  string(clientKeyPEM),
		},
	}

	tests := []struct {
		name                  string
		url                   string
		digest                gcrv1.Hash
		certSecret            *corev1.Secret
		expectreadyconition   bool
		expectedstatusmessage string
	}{
		{
			name:                  "test connection with CACert, Client Cert and Private Key",
			url:                   pi.url,
			digest:                pi.digest,
			certSecret:            &tlsSecretClientCert,
			expectreadyconition:   true,
			expectedstatusmessage: fmt.Sprintf("stored artifact for digest '%s'", pi.digest.Hex),
		},
		{
			name:                  "test connection with no secret",
			url:                   pi.url,
			digest:                pi.digest,
			expectreadyconition:   false,
			expectedstatusmessage: "unexpected status code 400 Bad Request: Client sent an HTTP request to an HTTPS server",
		},
		{
			name:   "test connection with with incorrect private key",
			url:    pi.url,
			digest: pi.digest,
			certSecret: &corev1.Secret{
				StringData: map[string]string{
					oci.CACert:     string(rootCertPEM),
					oci.ClientCert: string(clientCertPEM),
					oci.ClientKey:  string("invalid-key"),
				},
			},
			expectreadyconition:   false,
			expectedstatusmessage: "failed to generate transport for '<url>': tls: failed to find any PEM data in key input",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			g := NewWithT(t)

			ns, err := testEnv.CreateNamespace(ctx, "ocirepository-test")
			g.Expect(err).ToNot(HaveOccurred())
			defer func() { g.Expect(testEnv.Delete(ctx, ns)).To(Succeed()) }()

			obj := &sourcev1.OCIRepository{
				ObjectMeta: metav1.ObjectMeta{
					GenerateName: "ocirepository-test-resource",
					Namespace:    ns.Name,
				},
				Spec: sourcev1.OCIRepositorySpec{
					URL:       tt.url,
					Interval:  metav1.Duration{Duration: 60 * time.Minute},
					Reference: &sourcev1.OCIRepositoryRef{Digest: tt.digest.String()},
				},
			}

			if tt.certSecret != nil {
				tt.certSecret.ObjectMeta = metav1.ObjectMeta{
					GenerateName: "cert-secretref",
					Namespace:    ns.Name,
				}

				g.Expect(testEnv.CreateAndWait(ctx, tt.certSecret)).To(Succeed())
				defer func() { g.Expect(testEnv.Delete(ctx, tt.certSecret)).To(Succeed()) }()

				obj.Spec.CertSecretRef = &meta.LocalObjectReference{Name: tt.certSecret.Name}
			}

			g.Expect(testEnv.Create(ctx, obj)).To(Succeed())

			key := client.ObjectKey{Name: obj.Name, Namespace: obj.Namespace}

			resultobj := sourcev1.OCIRepository{}

			// Wait for the finalizer to be set
			g.Eventually(func() bool {
				if err := testEnv.Get(ctx, key, &resultobj); err != nil {
					return false
				}
				return len(resultobj.Finalizers) > 0
			}, timeout).Should(BeTrue())

			// Wait for the object to fail
			g.Eventually(func() bool {
				if err := testEnv.Get(ctx, key, &resultobj); err != nil {
					return false
				}
				readyCondition := conditions.Get(&resultobj, meta.ReadyCondition)
				if readyCondition == nil {
					return false
				}
				return obj.Generation == readyCondition.ObservedGeneration &&
					conditions.IsReady(&resultobj) == tt.expectreadyconition
			}, timeout).Should(BeTrue())

			tt.expectedstatusmessage = strings.ReplaceAll(tt.expectedstatusmessage, "<url>", pi.url)

			readyCondition := conditions.Get(&resultobj, meta.ReadyCondition)
			g.Expect(readyCondition.Message).Should(ContainSubstring(tt.expectedstatusmessage))

			// Wait for the object to be deleted
			g.Expect(testEnv.Delete(ctx, &resultobj)).To(Succeed())
			g.Eventually(func() bool {
				if err := testEnv.Get(ctx, key, &resultobj); err != nil {
					return apierrors.IsNotFound(err)
				}
				return false
			}, timeout).Should(BeTrue())
		})
	}
}

func TestOCIRepository_reconcileSource_remoteReference(t *testing.T) {
	g := NewWithT(t)

	tmpDir := t.TempDir()
	server, err := setupRegistryServer(ctx, tmpDir, registryOptions{})
	g.Expect(err).ToNot(HaveOccurred())

	podinfoVersions, err := pushMultiplePodinfoImages(server.registryHost, "6.1.4", "6.1.5", "6.1.6")
	img6 := podinfoVersions["6.1.6"]
	img5 := podinfoVersions["6.1.5"]

	tests := []struct {
		name             string
		reference        *sourcev1.OCIRepositoryRef
		want             sreconcile.Result
		wantErr          bool
		wantRevision     string
		assertConditions []metav1.Condition
	}{
		{
			name:         "no reference (latest tag)",
			want:         sreconcile.ResultSuccess,
			wantRevision: img6.digest.Hex,
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(meta.ReconcilingCondition, "NewRevision", "new digest"),
				*conditions.TrueCondition(sourcev1.ArtifactOutdatedCondition, "NewRevision", "new digest"),
			},
		},
		{
			name: "tag reference",
			reference: &sourcev1.OCIRepositoryRef{
				Tag: "6.1.6",
			},
			want:         sreconcile.ResultSuccess,
			wantRevision: img6.digest.Hex,
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(meta.ReconcilingCondition, "NewRevision", "new digest"),
				*conditions.TrueCondition(sourcev1.ArtifactOutdatedCondition, "NewRevision", "new digest"),
			},
		},
		{
			name: "semver reference",
			reference: &sourcev1.OCIRepositoryRef{
				SemVer: ">= 6.1.5",
			},
			want:         sreconcile.ResultSuccess,
			wantRevision: img6.digest.Hex,
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(meta.ReconcilingCondition, "NewRevision", "new digest"),
				*conditions.TrueCondition(sourcev1.ArtifactOutdatedCondition, "NewRevision", "new digest"),
			},
		},
		{
			name: "digest reference",
			reference: &sourcev1.OCIRepositoryRef{
				Digest: img6.digest.String(),
			},
			wantRevision: img6.digest.Hex,
			want:         sreconcile.ResultSuccess,
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(meta.ReconcilingCondition, "NewRevision", "new digest"),
				*conditions.TrueCondition(sourcev1.ArtifactOutdatedCondition, "NewRevision", "new digest"),
			},
		},
		{
			name: "invalid tag reference",
			reference: &sourcev1.OCIRepositoryRef{
				Tag: "6.1.0",
			},
			want:    sreconcile.ResultEmpty,
			wantErr: true,
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.FetchFailedCondition, sourcev1.OCIPullFailedReason, "failed to pull artifact"),
			},
		},
		{
			name: "invalid semver reference",
			reference: &sourcev1.OCIRepositoryRef{
				SemVer: "<= 6.1.0",
			},
			want:    sreconcile.ResultEmpty,
			wantErr: true,
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.FetchFailedCondition, sourcev1.ReadOperationFailedReason, "failed to determine the artifact tag for 'oci://%s/podinfo': no match found for semver: <= 6.1.0", server.registryHost),
			},
		},
		{
			name: "invalid digest reference",
			reference: &sourcev1.OCIRepositoryRef{
				Digest: "invalid",
			},
			want:    sreconcile.ResultEmpty,
			wantErr: true,
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.FetchFailedCondition, sourcev1.OCIPullFailedReason, "failed to pull artifact"),
			},
		},
		{
			name: "semver should take precedence over tag",
			reference: &sourcev1.OCIRepositoryRef{
				SemVer: ">= 6.1.5",
				Tag:    "6.1.5",
			},
			want:         sreconcile.ResultSuccess,
			wantRevision: img6.digest.Hex,
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(meta.ReconcilingCondition, "NewRevision", "new digest"),
				*conditions.TrueCondition(sourcev1.ArtifactOutdatedCondition, "NewRevision", "new digest"),
			},
		},
		{
			name: "digest should take precedence over semver",
			reference: &sourcev1.OCIRepositoryRef{
				Tag:    "6.1.6",
				SemVer: ">= 6.1.6",
				Digest: img5.digest.String(),
			},
			want:         sreconcile.ResultSuccess,
			wantRevision: img5.digest.Hex,
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(meta.ReconcilingCondition, "NewRevision", "new digest"),
				*conditions.TrueCondition(sourcev1.ArtifactOutdatedCondition, "NewRevision", "new digest"),
			},
		},
	}

	builder := fakeclient.NewClientBuilder().WithScheme(testEnv.GetScheme())

	r := &OCIRepositoryReconciler{
		Client:        builder.Build(),
		EventRecorder: record.NewFakeRecorder(32),
		Storage:       testStorage,
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			obj := &sourcev1.OCIRepository{
				ObjectMeta: metav1.ObjectMeta{
					GenerateName: "checkout-strategy-",
				},
				Spec: sourcev1.OCIRepositorySpec{
					URL:      fmt.Sprintf("oci://%s/podinfo", server.registryHost),
					Interval: metav1.Duration{Duration: interval},
					Timeout:  &metav1.Duration{Duration: timeout},
				},
			}

			if tt.reference != nil {
				obj.Spec.Reference = tt.reference
			}

			artifact := &sourcev1.Artifact{}
			tmpDir := t.TempDir()
			got, err := r.reconcileSource(ctx, obj, artifact, tmpDir)
			if tt.wantErr {
				g.Expect(err).To(HaveOccurred())
			} else {
				g.Expect(err).ToNot(HaveOccurred())
				g.Expect(artifact.Revision).To(Equal(tt.wantRevision))
			}

			g.Expect(got).To(Equal(tt.want))
			g.Expect(obj.Status.Conditions).To(conditions.MatchConditions(tt.assertConditions))
		})
	}
}

func TestOCIRepository_reconcileArtifact(t *testing.T) {
	g := NewWithT(t)

	tests := []struct {
		name             string
		targetPath       string
		artifact         *sourcev1.Artifact
		beforeFunc       func(obj *sourcev1.OCIRepository)
		want             sreconcile.Result
		wantErr          bool
		assertArtifact   *sourcev1.Artifact
		assertPaths      []string
		assertConditions []metav1.Condition
	}{
		{
			name:       "Archiving Artifact creates correct files and condition",
			targetPath: "testdata/oci/repository",
			artifact: &sourcev1.Artifact{
				Revision: "revision",
			},
			beforeFunc: func(obj *sourcev1.OCIRepository) {
				conditions.MarkTrue(obj, sourcev1.ArtifactOutdatedCondition, "NewRevision", "new digest")
			},
			want: sreconcile.ResultSuccess,
			assertPaths: []string{
				"latest.tar.gz",
			},
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.ArtifactInStorageCondition, meta.SucceededReason, "stored artifact for digest"),
			},
		},
		{
			name: "No status changes if artifact is already present",
			artifact: &sourcev1.Artifact{
				Revision: "revision",
			},
			targetPath: "testdata/oci/repository",
			want:       sreconcile.ResultSuccess,
			beforeFunc: func(obj *sourcev1.OCIRepository) {
				obj.Status.Artifact = &sourcev1.Artifact{
					Revision: "revision",
				}
			},
			assertArtifact: &sourcev1.Artifact{
				Revision: "revision",
			},
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.ArtifactInStorageCondition, meta.SucceededReason, "stored artifact for digest"),
			},
		},
		{
			name:       "target path doesn't exist",
			targetPath: "testdata/oci/non-existent",
			want:       sreconcile.ResultEmpty,
			wantErr:    true,
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.StorageOperationFailedCondition, sourcev1.StatOperationFailedReason, "failed to stat source path: "),
			},
		},
		{
			name:       "target path is a file",
			targetPath: "testdata/oci/repository/foo.txt",
			want:       sreconcile.ResultEmpty,
			wantErr:    true,
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(sourcev1.StorageOperationFailedCondition, sourcev1.InvalidPathReason, "source path 'testdata/oci/repository/foo.txt' is not a directory"),
			},
		},
	}

	builder := fakeclient.NewClientBuilder().WithScheme(testEnv.GetScheme())

	r := &OCIRepositoryReconciler{
		Client:        builder.Build(),
		EventRecorder: record.NewFakeRecorder(32),
		Storage:       testStorage,
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {

			obj := &sourcev1.OCIRepository{
				ObjectMeta: metav1.ObjectMeta{
					GenerateName: "reconcile-artifact-",
				},
			}
			if tt.beforeFunc != nil {
				tt.beforeFunc(obj)
			}

			artifact := &sourcev1.Artifact{}
			if tt.artifact != nil {
				artifact = tt.artifact
			}
			got, err := r.reconcileArtifact(ctx, obj, artifact, tt.targetPath)
			if tt.wantErr {
				g.Expect(err).To(HaveOccurred())
			} else {
				g.Expect(err).ToNot(HaveOccurred())
			}

			g.Expect(got).To(Equal(tt.want))
			g.Expect(obj.Status.Conditions).To(conditions.MatchConditions(tt.assertConditions))

			if tt.assertArtifact != nil {
				g.Expect(obj.Status.Artifact).To(MatchArtifact(tt.artifact))
			}

			for _, path := range tt.assertPaths {
				localPath := testStorage.LocalPath(*obj.GetArtifact())
				path = filepath.Join(filepath.Dir(localPath), path)
				_, err := os.Lstat(path)
				g.Expect(err).ToNot(HaveOccurred())
			}
		})
	}
}

func TestOCIRepository_getArtifactURL(t *testing.T) {
	g := NewWithT(t)

	tmpDir := t.TempDir()
	server, err := setupRegistryServer(ctx, tmpDir, registryOptions{})
	g.Expect(err).ToNot(HaveOccurred())

	imgs, err := pushMultiplePodinfoImages(server.registryHost, "6.1.4", "6.1.5", "6.1.6")
	g.Expect(err).ToNot(HaveOccurred())

	tests := []struct {
		name      string
		url       string
		reference *sourcev1.OCIRepositoryRef
		wantErr   bool
		want      string
	}{
		{
			name: "valid url with no reference",
			url:  "oci://ghcr.io/stefanprodan/charts",
			want: "ghcr.io/stefanprodan/charts",
		},
		{
			name: "valid url with tag reference",
			url:  "oci://ghcr.io/stefanprodan/charts",
			reference: &sourcev1.OCIRepositoryRef{
				Tag: "6.1.6",
			},
			want: "ghcr.io/stefanprodan/charts:6.1.6",
		},
		{
			name: "valid url with digest reference",
			url:  "oci://ghcr.io/stefanprodan/charts",
			reference: &sourcev1.OCIRepositoryRef{
				Digest: imgs["6.1.6"].digest.Hex,
			},
			want: "ghcr.io/stefanprodan/charts@" + imgs["6.1.6"].digest.Hex,
		},
		{
			name: "valid url with semver reference",
			url:  fmt.Sprintf("oci://%s/podinfo", server.registryHost),
			reference: &sourcev1.OCIRepositoryRef{
				SemVer: ">= 6.1.6",
			},
			want: server.registryHost + "/podinfo:6.1.6",
		},
		{
			name:    "invalid url without oci prefix",
			url:     "ghcr.io/stefanprodan/charts",
			wantErr: true,
		},
	}

	builder := fakeclient.NewClientBuilder().WithScheme(testEnv.GetScheme())
	r := &OCIRepositoryReconciler{
		Client:        builder.Build(),
		EventRecorder: record.NewFakeRecorder(32),
		Storage:       testStorage,
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			obj := &sourcev1.OCIRepository{
				ObjectMeta: metav1.ObjectMeta{
					GenerateName: "artifact-url-",
				},
				Spec: sourcev1.OCIRepositorySpec{
					URL:      tt.url,
					Interval: metav1.Duration{Duration: interval},
					Timeout:  &metav1.Duration{Duration: timeout},
				},
			}

			if tt.reference != nil {
				obj.Spec.Reference = tt.reference
			}

			opts := r.craneOptions(ctx, true)
			opts = append(opts, crane.WithAuthFromKeychain(authn.DefaultKeychain))
			got, err := r.getArtifactURL(obj, opts)
			if tt.wantErr {
				g.Expect(err).To(HaveOccurred())
				return
			}
			g.Expect(err).ToNot(HaveOccurred())
			g.Expect(got).To(Equal(tt.want))
		})
	}
}

func TestOCIRepository_verifyOCISourceSignature(t *testing.T) {
	g := NewWithT(t)

	tmpDir := t.TempDir()
	regServer, err := setupRegistryServer(ctx, tmpDir, registryOptions{})
	g.Expect(err).ToNot(HaveOccurred())

	_, err = pushMultiplePodinfoImages(regServer.registryHost, "6.1.4", "6.1.5", "6.1.6")
	g.Expect(err).ToNot(HaveOccurred())

	tests := []struct {
		name       string
		url        string
		reference  *sourcev1.OCIRepositoryRef
		shouldSign bool
		wantErr    bool
	}{
		{
			name: "signed image should pass verification",
			reference: &sourcev1.OCIRepositoryRef{
				Tag: "6.1.4",
			},
			shouldSign: true,
		},
		{
			name: "unsigned image should not pass verification",
			reference: &sourcev1.OCIRepositoryRef{
				Tag: "6.1.5",
			},
			shouldSign: false,
		},
	}

	builder := fakeclient.NewClientBuilder().WithScheme(testEnv.GetScheme())
	r := &OCIRepositoryReconciler{
		Client:        builder.Build(),
		EventRecorder: record.NewFakeRecorder(32),
		Storage:       testStorage,
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			obj := &sourcev1.OCIRepository{
				ObjectMeta: metav1.ObjectMeta{
					GenerateName: "artifact-url-",
				},
				Spec: sourcev1.OCIRepositorySpec{
					URL:       fmt.Sprintf("oci://%s/podinfo", regServer.registryHost),
					Reference: tt.reference,
					Verify: &sourcev1.OCIRepositoryVerification{
						Provider:  "cosign",
						SecretRef: &meta.LocalObjectReference{Name: "cosign-key"}},
					Interval: metav1.Duration{Duration: interval},
					Timeout:  &metav1.Duration{Duration: timeout},
				},
			}

			pf := func(b bool) ([]byte, error) {
				return []byte("foo"), nil
			}

			keys, err := cosign.GenerateKeyPair(pf)
			if err != nil {
				g.Expect(err).ToNot(HaveOccurred())
			}

			err = os.WriteFile("cosign.key", keys.PrivateBytes, 0600)
			if err != nil {
				g.Expect(err).ToNot(HaveOccurred())
			}

			secret := &corev1.Secret{
				ObjectMeta: metav1.ObjectMeta{
					Name: "cosign-key",
				},
				Data: map[string][]byte{
					"cosign.pub": keys.PublicBytes,
				}}

			err = r.Create(ctx, secret)
			if err != nil {
				g.Expect(err).NotTo(HaveOccurred())
			}

			keychain, err := r.keychain(ctx, obj)
			if err != nil {
				g.Expect(err).ToNot(HaveOccurred())
			}

			options := r.craneOptions(ctx, obj.Spec.Insecure)
			options = append(options, crane.WithAuthFromKeychain(keychain))
			url, err := r.getArtifactURL(obj, options)
			if err != nil {
				g.Expect(err).ToNot(HaveOccurred())
			}

			if tt.shouldSign {

				ko := coptions.KeyOpts{
					KeyRef:   "cosign.key",
					PassFunc: pf,
				}

				t.Logf("url: %s", url)

				ro := &coptions.RootOptions{}
				err = sign.SignCmd(ro, ko, coptions.RegistryOptions{Keychain: keychain}, nil, []string{url}, "", "", false, "", "", "", false, false, "", false)
				if err != nil {
					g.Expect(err).ToNot(HaveOccurred())
				}
			}

			err = r.verifyOCISourceSignature(ctx, obj, url, keychain)
			if tt.wantErr {
				g.Expect(err).To(HaveOccurred())
				return
			}
		})
	}

}

func TestOCIRepository_stalled(t *testing.T) {
	g := NewWithT(t)

	ns, err := testEnv.CreateNamespace(ctx, "ocirepository-stalled-test")
	g.Expect(err).ToNot(HaveOccurred())
	defer func() { g.Expect(testEnv.Delete(ctx, ns)).To(Succeed()) }()

	obj := &sourcev1.OCIRepository{
		ObjectMeta: metav1.ObjectMeta{
			GenerateName: "ocirepository-reconcile",
			Namespace:    ns.Name,
		},
		Spec: sourcev1.OCIRepositorySpec{
			URL:      "oci://ghcr.io/test/test:v1",
			Interval: metav1.Duration{Duration: 60 * time.Minute},
		},
	}

	g.Expect(testEnv.Create(ctx, obj)).To(Succeed())

	key := client.ObjectKey{Name: obj.Name, Namespace: obj.Namespace}
	resultobj := sourcev1.OCIRepository{}

	// Wait for the object to fail
	g.Eventually(func() bool {
		if err := testEnv.Get(ctx, key, &resultobj); err != nil {
			return false
		}
		readyCondition := conditions.Get(&resultobj, meta.ReadyCondition)
		if readyCondition == nil {
			return false
		}
		return obj.Generation == readyCondition.ObservedGeneration &&
			!conditions.IsReady(&resultobj)
	}, timeout).Should(BeTrue())

	// Verify that stalled condition is present in status
	stalledCondition := conditions.Get(&resultobj, meta.StalledCondition)
	g.Expect(stalledCondition).ToNot(BeNil())
	g.Expect(stalledCondition.Reason).Should(Equal(sourcev1.URLInvalidReason))
}

func TestOCIRepository_reconcileStorage(t *testing.T) {
	g := NewWithT(t)

	tests := []struct {
		name             string
		beforeFunc       func(obj *sourcev1.OCIRepository) error
		want             sreconcile.Result
		wantErr          bool
		assertConditions []metav1.Condition
		assertArtifact   *sourcev1.Artifact
		assertPaths      []string
	}{
		{
			name: "garbage collects",
			beforeFunc: func(obj *sourcev1.OCIRepository) error {
				revisions := []string{"a", "b", "c", "d"}

				for n := range revisions {
					v := revisions[n]
					obj.Status.Artifact = &sourcev1.Artifact{
						Path:     fmt.Sprintf("/oci-reconcile-storage/%s.txt", v),
						Revision: v,
					}
					if err := testStorage.MkdirAll(*obj.Status.Artifact); err != nil {
						return err
					}

					if err := testStorage.AtomicWriteFile(obj.Status.Artifact, strings.NewReader(v), 0o640); err != nil {
						return err
					}

					if n != len(revisions)-1 {
						time.Sleep(time.Second)
					}
				}

				testStorage.SetArtifactURL(obj.Status.Artifact)
				return nil
			},
			assertArtifact: &sourcev1.Artifact{
				Path:     "/oci-reconcile-storage/d.txt",
				Revision: "d",
				Checksum: "18ac3e7343f016890c510e93f935261169d9e3f565436429830faf0934f4f8e4",
				URL:      testStorage.Hostname + "/oci-reconcile-storage/d.txt",
				Size:     int64p(int64(len("d"))),
			},
			assertPaths: []string{
				"/oci-reconcile-storage/d.txt",
				"/oci-reconcile-storage/c.txt",
				"!/oci-reconcile-storage/b.txt",
				"!/oci-reconcile-storage/a.txt",
			},
			want: sreconcile.ResultSuccess,
		},
		{
			name: "notices missing artifact in storage",
			beforeFunc: func(obj *sourcev1.OCIRepository) error {
				obj.Status.Artifact = &sourcev1.Artifact{
					Path:     "/oci-reconcile-storage/invalid.txt",
					Revision: "e",
				}
				testStorage.SetArtifactURL(obj.Status.Artifact)
				return nil
			},
			want: sreconcile.ResultSuccess,
			assertPaths: []string{
				"!/oci-reconcile-storage/invalid.txt",
			},
			assertConditions: []metav1.Condition{
				*conditions.TrueCondition(meta.ReconcilingCondition, "NoArtifact", "no artifact for resource in storage"),
			},
		},
		{
			name: "updates hostname on diff from current",
			beforeFunc: func(obj *sourcev1.OCIRepository) error {
				obj.Status.Artifact = &sourcev1.Artifact{
					Path:     "/oci-reconcile-storage/hostname.txt",
					Revision: "f",
					Checksum: "3b9c358f36f0a31b6ad3e14f309c7cf198ac9246e8316f9ce543d5b19ac02b80",
					URL:      "http://outdated.com/oci-reconcile-storage/hostname.txt",
				}
				if err := testStorage.MkdirAll(*obj.Status.Artifact); err != nil {
					return err
				}
				if err := testStorage.AtomicWriteFile(obj.Status.Artifact, strings.NewReader("file"), 0o640); err != nil {
					return err
				}
				return nil
			},
			want: sreconcile.ResultSuccess,
			assertPaths: []string{
				"/oci-reconcile-storage/hostname.txt",
			},
			assertArtifact: &sourcev1.Artifact{
				Path:     "/oci-reconcile-storage/hostname.txt",
				Revision: "f",
				Checksum: "3b9c358f36f0a31b6ad3e14f309c7cf198ac9246e8316f9ce543d5b19ac02b80",
				URL:      testStorage.Hostname + "/oci-reconcile-storage/hostname.txt",
				Size:     int64p(int64(len("file"))),
			},
		},
	}

	builder := fakeclient.NewClientBuilder().WithScheme(testEnv.GetScheme())
	r := &OCIRepositoryReconciler{
		Client:        builder.Build(),
		EventRecorder: record.NewFakeRecorder(32),
		Storage:       testStorage,
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {

			obj := &sourcev1.OCIRepository{
				ObjectMeta: metav1.ObjectMeta{
					GenerateName: "test-",
				},
			}

			g.Expect(tt.beforeFunc(obj)).To(Succeed())
			got, err := r.reconcileStorage(ctx, obj, &sourcev1.Artifact{}, "")
			if tt.wantErr {
				g.Expect(err).To(HaveOccurred())
			} else {
				g.Expect(err).ToNot(HaveOccurred())
			}

			g.Expect(got).To(Equal(tt.want))
			g.Expect(obj.Status.Artifact).To(MatchArtifact(tt.assertArtifact))
			if tt.assertArtifact != nil && tt.assertArtifact.URL != "" {
				g.Expect(obj.Status.Artifact.URL).To(Equal(tt.assertArtifact.URL))
			}

			g.Expect(obj.Status.Conditions).To(conditions.MatchConditions(tt.assertConditions))

			for _, p := range tt.assertPaths {
				absoluteP := filepath.Join(testStorage.BasePath, p)
				if !strings.HasPrefix(p, "!") {
					g.Expect(absoluteP).To(BeAnExistingFile())
					continue
				}

				g.Expect(absoluteP).ToNot(BeAnExistingFile())
			}
		})
	}
}

func TestOCIRepository_ReconcileDelete(t *testing.T) {
	g := NewWithT(t)

	r := &OCIRepositoryReconciler{
		EventRecorder: record.NewFakeRecorder(32),
		Storage:       testStorage,
	}

	obj := &sourcev1.OCIRepository{
		ObjectMeta: metav1.ObjectMeta{
			Name:              "reconcile-delete-",
			DeletionTimestamp: &metav1.Time{Time: time.Now()},
			Finalizers: []string{
				sourcev1.SourceFinalizer,
			},
		},
		Status: sourcev1.OCIRepositoryStatus{},
	}

	artifact := testStorage.NewArtifactFor(sourcev1.OCIRepositoryKind, obj.GetObjectMeta(), "revision", "foo.txt")
	obj.Status.Artifact = &artifact

	got, err := r.reconcileDelete(ctx, obj)
	g.Expect(err).NotTo(HaveOccurred())
	g.Expect(got).To(Equal(sreconcile.ResultEmpty))
	g.Expect(controllerutil.ContainsFinalizer(obj, sourcev1.SourceFinalizer)).To(BeFalse())
	g.Expect(obj.Status.Artifact).To(BeNil())
}

func TestOCIRepositoryReconciler_notify(t *testing.T) {

	noopErr := serror.NewGeneric(fmt.Errorf("some no-op error"), "NoOpReason")
	noopErr.Ignore = true

	tests := []struct {
		name             string
		res              sreconcile.Result
		resErr           error
		oldObjBeforeFunc func(obj *sourcev1.OCIRepository)
		newObjBeforeFunc func(obj *sourcev1.OCIRepository)
		commit           git.Commit
		wantEvent        string
	}{
		{
			name:   "error - no event",
			res:    sreconcile.ResultEmpty,
			resErr: errors.New("some error"),
		},
		{
			name:   "new artifact",
			res:    sreconcile.ResultSuccess,
			resErr: nil,
			newObjBeforeFunc: func(obj *sourcev1.OCIRepository) {
				obj.Spec.URL = "oci://newurl.io"
				obj.Status.Artifact = &sourcev1.Artifact{
					Revision: "xxx",
					Checksum: "yyy",
					Metadata: map[string]string{
						oci.SourceAnnotation:   "https://github.com/stefanprodan/podinfo",
						oci.RevisionAnnotation: "6.1.8/b3b00fe35424a45d373bf4c7214178bc36fd7872",
					},
				}
			},
			wantEvent: "Normal NewArtifact stored artifact with digest 'xxx' from 'oci://newurl.io', origin source 'https://github.com/stefanprodan/podinfo', origin revision '6.1.8/b3b00fe35424a45d373bf4c7214178bc36fd7872'",
		},
		{
			name:   "recovery from failure",
			res:    sreconcile.ResultSuccess,
			resErr: nil,
			oldObjBeforeFunc: func(obj *sourcev1.OCIRepository) {
				obj.Status.Artifact = &sourcev1.Artifact{Revision: "xxx", Checksum: "yyy"}
				conditions.MarkTrue(obj, sourcev1.FetchFailedCondition, sourcev1.ReadOperationFailedReason, "fail")
				conditions.MarkFalse(obj, meta.ReadyCondition, meta.FailedReason, "foo")
			},
			newObjBeforeFunc: func(obj *sourcev1.OCIRepository) {
				obj.Spec.URL = "oci://newurl.io"
				obj.Status.Artifact = &sourcev1.Artifact{Revision: "xxx", Checksum: "yyy"}
				conditions.MarkTrue(obj, meta.ReadyCondition, meta.SucceededReason, "ready")
			},
			wantEvent: "Normal Succeeded stored artifact with digest 'xxx' from 'oci://newurl.io'",
		},
		{
			name:   "recovery and new artifact",
			res:    sreconcile.ResultSuccess,
			resErr: nil,
			oldObjBeforeFunc: func(obj *sourcev1.OCIRepository) {
				obj.Status.Artifact = &sourcev1.Artifact{Revision: "xxx", Checksum: "yyy"}
				conditions.MarkTrue(obj, sourcev1.FetchFailedCondition, sourcev1.ReadOperationFailedReason, "fail")
				conditions.MarkFalse(obj, meta.ReadyCondition, meta.FailedReason, "foo")
			},
			newObjBeforeFunc: func(obj *sourcev1.OCIRepository) {
				obj.Spec.URL = "oci://newurl.io"
				obj.Status.Artifact = &sourcev1.Artifact{Revision: "aaa", Checksum: "bbb"}
				conditions.MarkTrue(obj, meta.ReadyCondition, meta.SucceededReason, "ready")
			},
			wantEvent: "Normal NewArtifact stored artifact with digest 'aaa' from 'oci://newurl.io'",
		},
		{
			name:   "no updates",
			res:    sreconcile.ResultSuccess,
			resErr: nil,
			oldObjBeforeFunc: func(obj *sourcev1.OCIRepository) {
				obj.Status.Artifact = &sourcev1.Artifact{Revision: "xxx", Checksum: "yyy"}
				conditions.MarkTrue(obj, meta.ReadyCondition, meta.SucceededReason, "ready")
			},
			newObjBeforeFunc: func(obj *sourcev1.OCIRepository) {
				obj.Status.Artifact = &sourcev1.Artifact{Revision: "xxx", Checksum: "yyy"}
				conditions.MarkTrue(obj, meta.ReadyCondition, meta.SucceededReason, "ready")
			},
		},
		{
			name:   "no updates on requeue",
			res:    sreconcile.ResultRequeue,
			resErr: nil,
			oldObjBeforeFunc: func(obj *sourcev1.OCIRepository) {
				obj.Status.Artifact = &sourcev1.Artifact{Revision: "xxx", Checksum: "yyy"}
				conditions.MarkTrue(obj, sourcev1.FetchFailedCondition, sourcev1.URLInvalidReason, "ready")
			},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			g := NewWithT(t)
			recorder := record.NewFakeRecorder(32)

			oldObj := &sourcev1.OCIRepository{}
			newObj := oldObj.DeepCopy()

			if tt.oldObjBeforeFunc != nil {
				tt.oldObjBeforeFunc(oldObj)
			}
			if tt.newObjBeforeFunc != nil {
				tt.newObjBeforeFunc(newObj)
			}

			reconciler := &OCIRepositoryReconciler{
				EventRecorder: recorder,
			}
			reconciler.notify(ctx, oldObj, newObj, tt.res, tt.resErr)

			select {
			case x, ok := <-recorder.Events:
				g.Expect(ok).To(Equal(tt.wantEvent != ""), "unexpected event received")
				if tt.wantEvent != "" {
					g.Expect(x).To(ContainSubstring(tt.wantEvent))
				}
			default:
				if tt.wantEvent != "" {
					t.Errorf("expected some event to be emitted")
				}
			}
		})
	}
}

type artifactFixture struct {
	expectedPath     string
	expectedChecksum string
}

type podinfoImage struct {
	url    string
	tag    string
	digest gcrv1.Hash
}

func createPodinfoImageFromTar(tarFileName, tag, registryURL string, opts ...crane.Option) (*podinfoImage, error) {
	// Create Image
	image, err := crane.Load(path.Join("testdata", "podinfo", tarFileName))
	if err != nil {
		return nil, err
	}

	image = setPodinfoImageAnnotations(image, tag)

	// url.Parse doesn't handle urls with no scheme well e.g localhost:<port>
	if !(strings.HasPrefix(registryURL, "http://") || strings.HasPrefix(registryURL, "https://")) {
		registryURL = fmt.Sprintf("http://%s", registryURL)
	}

	myURL, err := url.Parse(registryURL)
	if err != nil {
		return nil, err
	}
	repositoryURL := fmt.Sprintf("%s/podinfo", myURL.Host)

	// Image digest
	podinfoImageDigest, err := image.Digest()
	if err != nil {
		return nil, err
	}

	// Push image
	err = crane.Push(image, repositoryURL, opts...)
	if err != nil {
		return nil, err
	}

	// Tag the image
	err = crane.Tag(repositoryURL, tag, opts...)
	if err != nil {
		return nil, err
	}

	return &podinfoImage{
		url:    "oci://" + repositoryURL,
		tag:    tag,
		digest: podinfoImageDigest,
	}, nil
}

func pushMultiplePodinfoImages(serverURL string, versions ...string) (map[string]podinfoImage, error) {
	podinfoVersions := make(map[string]podinfoImage)

	for i := 0; i < len(versions); i++ {
		pi, err := createPodinfoImageFromTar(fmt.Sprintf("podinfo-%s.tar", versions[i]), versions[i], serverURL)
		if err != nil {
			return nil, err
		}

		podinfoVersions[versions[i]] = *pi

	}

	return podinfoVersions, nil
}

func setPodinfoImageAnnotations(img gcrv1.Image, tag string) gcrv1.Image {
	metadata := map[string]string{
		oci.SourceAnnotation:   "https://github.com/stefanprodan/podinfo",
		oci.RevisionAnnotation: fmt.Sprintf("%s/SHA", tag),
	}
	return mutate.Annotations(img, metadata).(gcrv1.Image)
}

// These two taken verbatim from https://ericchiang.github.io/post/go-tls/
func certTemplate() (*x509.Certificate, error) {
	// generate a random serial number (a real cert authority would
	// have some logic behind this)
	serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
	serialNumber, err := rand.Int(rand.Reader, serialNumberLimit)
	if err != nil {
		return nil, errors.New("failed to generate serial number: " + err.Error())
	}

	tmpl := x509.Certificate{
		SerialNumber:          serialNumber,
		Subject:               pkix.Name{Organization: []string{"Flux project"}},
		SignatureAlgorithm:    x509.SHA256WithRSA,
		NotBefore:             time.Now(),
		NotAfter:              time.Now().Add(time.Hour), // valid for an hour
		BasicConstraintsValid: true,
	}
	return &tmpl, nil
}

func createCert(template, parent *x509.Certificate, pub interface{}, parentPriv interface{}) (
	cert *x509.Certificate, certPEM []byte, err error) {

	certDER, err := x509.CreateCertificate(rand.Reader, template, parent, pub, parentPriv)
	if err != nil {
		return
	}
	// parse the resulting certificate so we can use it again
	cert, err = x509.ParseCertificate(certDER)
	if err != nil {
		return
	}
	// PEM encode the certificate (this is a standard TLS encoding)
	b := pem.Block{Type: "CERTIFICATE", Bytes: certDER}
	certPEM = pem.EncodeToMemory(&b)
	return
}

func createTLSServer() (*httptest.Server, []byte, []byte, []byte, tls.Certificate, error) {
	var clientTLSCert tls.Certificate
	var rootCertPEM, clientCertPEM, clientKeyPEM []byte

	srv := httptest.NewUnstartedServer(registry.New())

	// Create a self-signed cert to use as the CA and server cert.
	rootKey, err := rsa.GenerateKey(rand.Reader, 2048)
	if err != nil {
		return srv, rootCertPEM, clientCertPEM, clientKeyPEM, clientTLSCert, err
	}
	rootCertTmpl, err := certTemplate()
	if err != nil {
		return srv, rootCertPEM, clientCertPEM, clientKeyPEM, clientTLSCert, err
	}
	rootCertTmpl.IsCA = true
	rootCertTmpl.KeyUsage = x509.KeyUsageCertSign | x509.KeyUsageDigitalSignature
	rootCertTmpl.ExtKeyUsage = []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth, x509.ExtKeyUsageClientAuth}
	rootCertTmpl.IPAddresses = []net.IP{net.ParseIP("127.0.0.1")}
	var rootCert *x509.Certificate
	rootCert, rootCertPEM, err = createCert(rootCertTmpl, rootCertTmpl, &rootKey.PublicKey, rootKey)
	if err != nil {
		return srv, rootCertPEM, clientCertPEM, clientKeyPEM, clientTLSCert, err
	}

	rootKeyPEM := pem.EncodeToMemory(&pem.Block{
		Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(rootKey),
	})

	// Create a TLS cert using the private key and certificate.
	rootTLSCert, err := tls.X509KeyPair(rootCertPEM, rootKeyPEM)
	if err != nil {
		return srv, rootCertPEM, clientCertPEM, clientKeyPEM, clientTLSCert, err
	}

	// To trust a client certificate, the server must be given a
	// CA cert pool.
	pool := x509.NewCertPool()
	pool.AddCert(rootCert)

	srv.TLS = &tls.Config{
		ClientAuth:   tls.RequireAndVerifyClientCert,
		Certificates: []tls.Certificate{rootTLSCert},
		ClientCAs:    pool,
	}

	// Create a client cert, signed by the "CA".
	clientKey, err := rsa.GenerateKey(rand.Reader, 2048)
	if err != nil {
		return srv, rootCertPEM, clientCertPEM, clientKeyPEM, clientTLSCert, err
	}
	clientCertTmpl, err := certTemplate()
	if err != nil {
		return srv, rootCertPEM, clientCertPEM, clientKeyPEM, clientTLSCert, err
	}
	clientCertTmpl.KeyUsage = x509.KeyUsageDigitalSignature
	clientCertTmpl.ExtKeyUsage = []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth}
	_, clientCertPEM, err = createCert(clientCertTmpl, rootCert, &clientKey.PublicKey, rootKey)
	if err != nil {
		return srv, rootCertPEM, clientCertPEM, clientKeyPEM, clientTLSCert, err
	}
	// Encode and load the cert and private key for the client.
	clientKeyPEM = pem.EncodeToMemory(&pem.Block{
		Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(clientKey),
	})
	clientTLSCert, err = tls.X509KeyPair(clientCertPEM, clientKeyPEM)
	return srv, rootCertPEM, clientCertPEM, clientKeyPEM, clientTLSCert, err
}