/*
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 externalsecret

import (
	"context"
	"path/filepath"
	"testing"
	"time"

	"go.uber.org/zap/zapcore"
	v1 "k8s.io/api/core/v1"
	"k8s.io/client-go/kubernetes/scheme"
	"k8s.io/client-go/rest"
	ctrl "sigs.k8s.io/controller-runtime"
	"sigs.k8s.io/controller-runtime/pkg/client"
	"sigs.k8s.io/controller-runtime/pkg/controller"
	"sigs.k8s.io/controller-runtime/pkg/envtest"
	logf "sigs.k8s.io/controller-runtime/pkg/log"
	"sigs.k8s.io/controller-runtime/pkg/log/zap"
	"sigs.k8s.io/controller-runtime/pkg/metrics/server"

	esv1beta1 "github.com/external-secrets/external-secrets/apis/externalsecrets/v1beta1"
	genv1alpha1 "github.com/external-secrets/external-secrets/apis/generators/v1alpha1"
	ctrlcommon "github.com/external-secrets/external-secrets/pkg/controllers/common"

	. "github.com/onsi/ginkgo/v2"
	. "github.com/onsi/gomega"
)

// These tests use Ginkgo (BDD-style Go testing framework). Refer to
// http://onsi.github.io/ginkgo/ to learn more about Ginkgo.

var cfg *rest.Config
var k8sClient client.Client
var testEnv *envtest.Environment
var cancel context.CancelFunc

func TestAPIs(t *testing.T) {
	RegisterFailHandler(Fail)
	RunSpecs(t, "Controller Suite")
}

var _ = BeforeSuite(func() {
	log := zap.New(zap.WriteTo(GinkgoWriter), zap.Level(zapcore.DebugLevel))

	logf.SetLogger(log)

	By("bootstrapping test environment")
	testEnv = &envtest.Environment{
		CRDDirectoryPaths: []string{filepath.Join("..", "..", "..", "deploy", "crds")},
	}

	var ctx context.Context
	ctx, cancel = context.WithCancel(context.Background())

	var err error
	cfg, err = testEnv.Start()
	Expect(err).ToNot(HaveOccurred())
	Expect(cfg).ToNot(BeNil())

	err = esv1beta1.AddToScheme(scheme.Scheme)
	Expect(err).NotTo(HaveOccurred())

	err = genv1alpha1.AddToScheme(scheme.Scheme)
	Expect(err).NotTo(HaveOccurred())

	k8sManager, err := ctrl.NewManager(cfg, ctrl.Options{
		Scheme: scheme.Scheme,
		Metrics: server.Options{
			BindAddress: "0", // avoid port collision when testing
		},
		Client: client.Options{
			Cache: &client.CacheOptions{
				// the client creates a ListWatch for resources that are requested with .Get() or .List()
				// we disable caching in the production code, so we disable it here as well for consistency
				// see: https://github.com/external-secrets/external-secrets/issues/721
				DisableFor: []client.Object{
					&v1.Secret{},
					&v1.ConfigMap{},
				},
			},
		},
	})
	Expect(err).ToNot(HaveOccurred())

	// do not use k8sManager.GetClient()
	// see https://github.com/kubernetes-sigs/controller-runtime/issues/343#issuecomment-469435686
	k8sClient, err = client.New(cfg, client.Options{Scheme: scheme.Scheme})
	Expect(k8sClient).ToNot(BeNil())
	Expect(err).ToNot(HaveOccurred())

	// by default, we use a separate cached client for secrets that are managed by the controller
	// so we should test under the same conditions
	secretClient, err := ctrlcommon.BuildManagedSecretClient(k8sManager)
	Expect(err).ToNot(HaveOccurred())

	err = (&Reconciler{
		Client:                    k8sManager.GetClient(),
		SecretClient:              secretClient,
		RestConfig:                cfg,
		Scheme:                    k8sManager.GetScheme(),
		Log:                       ctrl.Log.WithName("controllers").WithName("ExternalSecrets"),
		RequeueInterval:           time.Second,
		ClusterSecretStoreEnabled: true,
	}).SetupWithManager(k8sManager, controller.Options{
		MaxConcurrentReconciles: 1,
		RateLimiter:             ctrlcommon.BuildRateLimiter(),
	})
	Expect(err).ToNot(HaveOccurred())

	go func() {
		defer GinkgoRecover()
		Expect(k8sManager.Start(ctx)).ToNot(HaveOccurred())
	}()
})

var _ = AfterSuite(func() {
	By("tearing down the test environment")
	cancel() // stop manager
	err := (func() (err error) {
		// Need to sleep if the first stop fails due to a bug:
		// https://github.com/kubernetes-sigs/controller-runtime/issues/1571
		sleepTime := 1 * time.Millisecond
		for i := 0; i < 12; i++ { // Exponentially sleep up to ~4s
			if err = testEnv.Stop(); err == nil {
				return
			}
			sleepTime *= 2
			time.Sleep(sleepTime)
		}
		return
	})()
	Expect(err).NotTo(HaveOccurred())
})