// Copyright 2021-2022 Intel Corporation. All Rights Reserved.
//
// 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 dsa

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

	"github.com/intel/intel-device-plugins-for-kubernetes/test/e2e/utils"
	"github.com/onsi/ginkgo/v2"
	"k8s.io/apimachinery/pkg/labels"
	"k8s.io/kubernetes/test/e2e/framework"
	e2edebug "k8s.io/kubernetes/test/e2e/framework/debug"
	e2ekubectl "k8s.io/kubernetes/test/e2e/framework/kubectl"
	e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
	admissionapi "k8s.io/pod-security-admission/api"
)

const (
	ns                = "inteldeviceplugins-system"
	timeout           = time.Second * 120
	kustomizationYaml = "deployments/dsa_plugin/overlays/dsa_initcontainer/dsa_initcontainer.yaml"
	configmapYaml     = "demo/dsa.conf"
	demoYaml          = "demo/dsa-accel-config-demo-pod.yaml"
	podName           = "dsa-accel-config-demo"
)

func init() {
	ginkgo.Describe("DSA plugin", describe)
}

func describe() {
	f := framework.NewDefaultFramework("dsaplugin")
	f.NamespacePodSecurityEnforceLevel = admissionapi.LevelPrivileged

	kustomizationPath, err := utils.LocateRepoFile(kustomizationYaml)
	if err != nil {
		framework.Failf("unable to locate %q: %v", kustomizationYaml, err)
	}

	configmap, err := utils.LocateRepoFile(configmapYaml)
	if err != nil {
		framework.Failf("unable to locate %q: %v", configmapYaml, err)
	}

	demoPath, err := utils.LocateRepoFile(demoYaml)
	if err != nil {
		framework.Failf("unable to locate %q: %v", demoYaml, err)
	}

	var dpPodName string

	ginkgo.Describe("Without using operator", func() {
		ginkgo.BeforeEach(func(ctx context.Context) {
			ginkgo.By("deploying DSA plugin")
			e2ekubectl.RunKubectlOrDie(f.Namespace.Name, "create", "configmap", "intel-dsa-config", "--from-file="+configmap)

			e2ekubectl.RunKubectlOrDie(f.Namespace.Name, "apply", "-k", filepath.Dir(kustomizationPath))

			ginkgo.By("waiting for DSA plugin's availability")
			podList, err := e2epod.WaitForPodsWithLabelRunningReady(ctx, f.ClientSet, f.Namespace.Name,
				labels.Set{"app": "intel-dsa-plugin"}.AsSelector(), 1 /* one replica */, 300*time.Second)
			if err != nil {
				e2edebug.DumpAllNamespaceInfo(ctx, f.ClientSet, f.Namespace.Name)
				e2ekubectl.LogFailedContainers(ctx, f.ClientSet, f.Namespace.Name, framework.Logf)
				framework.Failf("unable to wait for all pods to be running and ready: %v", err)
			}
			dpPodName = podList.Items[0].Name

			ginkgo.By("checking DSA plugin's securityContext")
			if err = utils.TestPodsFileSystemInfo(podList.Items); err != nil {
				framework.Failf("container filesystem info checks failed: %v", err)
			}
		})

		ginkgo.AfterEach(func(ctx context.Context) {
			ginkgo.By("undeploying DSA plugin")
			e2ekubectl.RunKubectlOrDie(f.Namespace.Name, "delete", "-k", filepath.Dir(kustomizationPath))
			if err := e2epod.WaitForPodNotFoundInNamespace(ctx, f.ClientSet, dpPodName, f.Namespace.Name, 30*time.Second); err != nil {
				framework.Failf("failed to terminate pod: %v", err)
			}
		})

		ginkgo.Context("When DSA resources are available", func() {
			ginkgo.BeforeEach(func(ctx context.Context) {
				ginkgo.By("checking if the resource is allocatable")
				if err := utils.WaitForNodesWithResource(ctx, f.ClientSet, "dsa.intel.com/wq-user-dedicated", 300*time.Second); err != nil {
					framework.Failf("unable to wait for nodes to have positive allocatable resource: %v", err)
				}
			})

			ginkgo.It("deploys a demo app", func(ctx context.Context) {
				e2ekubectl.RunKubectlOrDie(f.Namespace.Name, "apply", "-f", demoPath)

				ginkgo.By("waiting for the DSA demo to succeed")
				e2epod.NewPodClient(f).WaitForSuccess(ctx, podName, 200*time.Second)

				ginkgo.By("getting workload log")
				log, err := e2epod.GetPodLogs(ctx, f.ClientSet, f.Namespace.Name, podName, podName)

				if err != nil {
					framework.Failf("unable to get log from pod: %v", err)
				}

				framework.Logf("log output: %s", log)
			})
		})
	})
}