/*
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 secretmanager

import (
	"context"
	"fmt"

	kclient "sigs.k8s.io/controller-runtime/pkg/client"

	esv1 "github.com/external-secrets/external-secrets/apis/externalsecrets/v1"
	"github.com/external-secrets/external-secrets/providers/v1/cloudru/secretmanager/adapter"
	"github.com/external-secrets/external-secrets/runtime/esutils/resolvers"
)

// KubeCredentialsResolver resolves the credentials from the Kubernetes secret.
type KubeCredentialsResolver struct {
	ref  *esv1.CSMAuthSecretRef
	kube kclient.Client

	namespace string
	storeKind string
}

// NewKubeCredentialsResolver creates a new KubeCredentialsResolver.
func NewKubeCredentialsResolver(kube kclient.Client, namespace, storeKind string, ref *esv1.CSMAuthSecretRef) *KubeCredentialsResolver {
	return &KubeCredentialsResolver{
		ref:       ref,
		kube:      kube,
		namespace: namespace,
		storeKind: storeKind,
	}
}

// Resolve resolves the credentials from the Kubernetes secret.
func (kcr *KubeCredentialsResolver) Resolve(ctx context.Context) (*adapter.Credentials, error) {
	keyID, err := resolvers.SecretKeyRef(ctx, kcr.kube, kcr.storeKind, kcr.namespace, &kcr.ref.AccessKeyID)
	if err != nil {
		return nil, fmt.Errorf("failed to resolve accessKeyID: %w", err)
	}

	secret, err := resolvers.SecretKeyRef(ctx, kcr.kube, kcr.storeKind, kcr.namespace, &kcr.ref.AccessKeySecret)
	if err != nil {
		return nil, fmt.Errorf("failed to resolve accessKeySecret")
	}

	creds, err := adapter.NewCredentials(keyID, secret)
	if err != nil {
		return nil, fmt.Errorf("failed to get auth credentials: %w", err)
	}

	return creds, nil
}