/*
Copyright 2023 The K8sGPT 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 trivy

import (
	"context"
	"fmt"

	"github.com/k8sgpt-ai/k8sgpt/pkg/common"
	helmclient "github.com/mittwald/go-helm-client"
	"helm.sh/helm/v3/pkg/repo"
)

const (
	Repo          = "https://aquasecurity.github.io/helm-charts/"
	Version       = "0.13.0"
	ChartName     = "trivy-operator"
	RepoShortName = "aqua"
	ReleaseName   = "trivy-operator-k8sgpt"
)

type Trivy struct {
	helm helmclient.Client
}

func NewTrivy() *Trivy {
	helmClient, err := helmclient.New(&helmclient.Options{})
	if err != nil {
		panic(err)
	}
	return &Trivy{
		helm: helmClient,
	}
}

func (t *Trivy) GetAnalyzerName() string {
	return "VulnerabilityReport"
}

func (t *Trivy) Deploy(namespace string) error {

	// Add the repository
	chartRepo := repo.Entry{
		Name: RepoShortName,
		URL:  Repo,
	}

	// Add a chart-repository to the client.
	if err := t.helm.AddOrUpdateChartRepo(chartRepo); err != nil {
		panic(err)
	}

	chartSpec := helmclient.ChartSpec{
		ReleaseName: ReleaseName,
		ChartName:   fmt.Sprintf("%s/%s", RepoShortName, ChartName),
		Namespace:   namespace,
		UpgradeCRDs: true,
		Wait:        false,
		Timeout:     300,
	}

	// Install a chart release.
	// Note that helmclient.Options.Namespace should ideally match the namespace in chartSpec.Namespace.
	if _, err := t.helm.InstallOrUpgradeChart(context.Background(), &chartSpec, nil); err != nil {
		return err
	}

	return nil
}

func (t *Trivy) UnDeploy(namespace string) error {
	chartSpec := helmclient.ChartSpec{
		ReleaseName: ReleaseName,
		ChartName:   fmt.Sprintf("%s/%s", RepoShortName, ChartName),
		Namespace:   namespace,
		UpgradeCRDs: true,
		Wait:        false,
		Timeout:     300,
	}
	// Uninstall the chart release.
	// Note that helmclient.Options.Namespace should ideally match the namespace in chartSpec.Namespace.
	if err := t.helm.UninstallRelease(&chartSpec); err != nil {
		return err
	}
	return nil
}

func (t *Trivy) IsActivate() bool {

	if _, err := t.helm.GetRelease(ReleaseName); err != nil {
		return false
	}

	return true
}

func (t *Trivy) AddAnalyzer(mergedMap *map[string]common.IAnalyzer) {

	(*mergedMap)["VulnerabilityReport"] = &TrivyAnalyzer{}

}

func (t *Trivy) RemoveAnalyzer() error {
	return nil
}