// Copyright Amazon.com Inc. or its affiliates. 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 bundles

import (
	"fmt"

	"github.com/pkg/errors"

	anywherev1alpha1 "github.com/aws/eks-anywhere/release/api/v1alpha1"
	"github.com/aws/eks-anywhere/release/pkg/constants"
	releasetypes "github.com/aws/eks-anywhere/release/pkg/types"
	bundleutils "github.com/aws/eks-anywhere/release/pkg/util/bundles"
	"github.com/aws/eks-anywhere/release/pkg/version"
)

func GetFluxBundle(r *releasetypes.ReleaseConfig, imageDigests map[string]string) (anywherev1alpha1.FluxBundle, error) {
	fluxBundleArtifacts := map[string][]releasetypes.Artifact{
		"helm-controller":         r.BundleArtifactsTable["helm-controller"],
		"kustomize-controller":    r.BundleArtifactsTable["kustomize-controller"],
		"notification-controller": r.BundleArtifactsTable["notification-controller"],
		"source-controller":       r.BundleArtifactsTable["source-controller"],
	}
	sortedComponentNames := bundleutils.SortArtifactsMap(fluxBundleArtifacts)

	var sourceBranch string
	var componentChecksum string
	bundleImageArtifacts := map[string]anywherev1alpha1.Image{}
	artifactHashes := []string{}

	for _, componentName := range sortedComponentNames {
		for _, artifact := range fluxBundleArtifacts[componentName] {
			imageArtifact := artifact.Image
			sourceBranch = imageArtifact.SourcedFromBranch

			bundleImageArtifact := anywherev1alpha1.Image{
				Name:        imageArtifact.AssetName,
				Description: fmt.Sprintf("Container image for %s image", imageArtifact.AssetName),
				OS:          imageArtifact.OS,
				Arch:        imageArtifact.Arch,
				URI:         imageArtifact.ReleaseImageURI,
				ImageDigest: imageDigests[imageArtifact.ReleaseImageURI],
			}

			bundleImageArtifacts[imageArtifact.AssetName] = bundleImageArtifact
			artifactHashes = append(artifactHashes, bundleImageArtifact.ImageDigest)
		}
	}

	if r.DryRun {
		componentChecksum = version.FakeComponentChecksum
	} else {
		componentChecksum = version.GenerateComponentHash(artifactHashes, r.DryRun)
	}
	version, err := version.BuildComponentVersion(
		version.NewMultiProjectVersionerWithGITTAG(r.BuildRepoSource,
			constants.FluxcdRootPath,
			constants.Flux2ProjectPath,
			sourceBranch,
			r,
		),
		componentChecksum,
	)
	if err != nil {
		return anywherev1alpha1.FluxBundle{}, errors.Wrap(err, "failed generating version for flux bundle")
	}

	bundle := anywherev1alpha1.FluxBundle{
		Version:                version,
		SourceController:       bundleImageArtifacts["source-controller"],
		KustomizeController:    bundleImageArtifacts["kustomize-controller"],
		HelmController:         bundleImageArtifacts["helm-controller"],
		NotificationController: bundleImageArtifacts["notification-controller"],
	}

	return bundle, nil
}