/*
Copyright © The ESO 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

    https://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 externalsecret

import (
	"context"
	"testing"

	"k8s.io/apimachinery/pkg/runtime"
	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
	"sigs.k8s.io/controller-runtime/pkg/client"
	fakeclient "sigs.k8s.io/controller-runtime/pkg/client/fake"
	"sigs.k8s.io/controller-runtime/pkg/reconcile"

	esv1 "github.com/external-secrets/external-secrets/apis/externalsecrets/v1"
	esv2alpha1 "github.com/external-secrets/external-secrets/apis/externalsecrets/v2alpha1"
)

const testNamespaceTeamA = "team-a"

func TestIndexExternalSecretV2StoreRefs(t *testing.T) {
	es := &esv1.ExternalSecret{}
	es.Namespace = testNamespaceTeamA
	es.Spec.SecretStoreRef = esv1.SecretStoreRef{
		Name: "namespaced-store",
		Kind: esv1.ProviderStoreKindStr,
	}
	es.Spec.Data = []esv1.ExternalSecretData{
		{},
		{
			SourceRef: &esv1.StoreSourceRef{
				SecretStoreRef: esv1.SecretStoreRef{
					Name: "cluster-store",
					Kind: esv1.ClusterProviderStoreKindStr,
				},
			},
		},
	}
	es.Spec.DataFrom = []esv1.ExternalSecretDataFromRemoteRef{
		{
			SourceRef: &esv1.StoreGeneratorSourceRef{
				SecretStoreRef: &esv1.SecretStoreRef{
					Name: "secondary-store",
					Kind: esv1.ProviderStoreKindStr,
				},
			},
		},
		{
			SourceRef: &esv1.StoreGeneratorSourceRef{
				SecretStoreRef: &esv1.SecretStoreRef{
					Name: "ignored-v1-store",
					Kind: esv1.SecretStoreKind,
				},
			},
		},
	}

	got := indexExternalSecretV2StoreRefs(es)
	want := map[string]struct{}{
		v2StoreRefIndexKey(esv1.ClusterProviderStoreKindStr, "", "cluster-store"):             {},
		v2StoreRefIndexKey(esv1.ProviderStoreKindStr, testNamespaceTeamA, "namespaced-store"): {},
		v2StoreRefIndexKey(esv1.ProviderStoreKindStr, testNamespaceTeamA, "secondary-store"):  {},
	}

	if len(got) != len(want) {
		t.Fatalf("expected %d index keys, got %d: %#v", len(want), len(got), got)
	}
	for _, key := range got {
		if _, ok := want[key]; !ok {
			t.Fatalf("unexpected index key %q in %#v", key, got)
		}
		delete(want, key)
	}
	if len(want) != 0 {
		t.Fatalf("missing expected index keys: %#v", want)
	}
}

func TestFindExternalSecretsForV2Store(t *testing.T) {
	scheme := runtime.NewScheme()
	utilruntime.Must(clientgoscheme.AddToScheme(scheme))
	utilruntime.Must(esv1.AddToScheme(scheme))
	utilruntime.Must(esv2alpha1.AddToScheme(scheme))

	matching := &esv1.ExternalSecret{}
	matching.Namespace = testNamespaceTeamA
	matching.Name = "matching"
	matching.Spec.SecretStoreRef = esv1.SecretStoreRef{
		Name: "aws-prod",
		Kind: esv1.ProviderStoreKindStr,
	}

	nonMatching := &esv1.ExternalSecret{}
	nonMatching.Namespace = testNamespaceTeamA
	nonMatching.Name = "non-matching"
	nonMatching.Spec.SecretStoreRef = esv1.SecretStoreRef{
		Name: "aws-other",
		Kind: esv1.ProviderStoreKindStr,
	}

	cl := fakeclient.NewClientBuilder().
		WithScheme(scheme).
		WithObjects(matching, nonMatching).
		WithIndex(&esv1.ExternalSecret{}, indexESV2StoreRefField, indexExternalSecretV2StoreRefs).
		Build()

	r := &Reconciler{Client: cl}
	store := &esv2alpha1.ProviderStore{}
	store.Namespace = testNamespaceTeamA
	store.Name = "aws-prod"

	got := r.findExternalSecretsForV2Store(context.Background(), store)
	want := []reconcile.Request{{
		NamespacedName: client.ObjectKeyFromObject(matching),
	}}

	if len(got) != len(want) {
		t.Fatalf("expected %d requests, got %d: %#v", len(want), len(got), got)
	}
	if got[0] != want[0] {
		t.Fatalf("expected requests %#v, got %#v", want, got)
	}
}

func TestFindExternalSecretsForClusterProviderStore(t *testing.T) {
	scheme := runtime.NewScheme()
	utilruntime.Must(clientgoscheme.AddToScheme(scheme))
	utilruntime.Must(esv1.AddToScheme(scheme))
	utilruntime.Must(esv2alpha1.AddToScheme(scheme))

	matching := &esv1.ExternalSecret{}
	matching.Namespace = testNamespaceTeamA
	matching.Name = "matching"
	matching.Spec.Data = []esv1.ExternalSecretData{
		{
			SourceRef: &esv1.StoreSourceRef{
				SecretStoreRef: esv1.SecretStoreRef{
					Name: "shared",
					Kind: esv1.ClusterProviderStoreKindStr,
				},
			},
		},
	}

	cl := fakeclient.NewClientBuilder().
		WithScheme(scheme).
		WithObjects(matching).
		WithIndex(&esv1.ExternalSecret{}, indexESV2StoreRefField, indexExternalSecretV2StoreRefs).
		Build()

	r := &Reconciler{Client: cl}
	store := &esv2alpha1.ClusterProviderStore{}
	store.Name = "shared"

	got := r.findExternalSecretsForV2Store(context.Background(), store)
	if len(got) != 1 || got[0].NamespacedName.Name != matching.Name || got[0].NamespacedName.Namespace != matching.Namespace {
		t.Fatalf("unexpected requests: %#v", got)
	}
}