/*
Copyright © contributors to CloudNativePG, established as
CloudNativePG a Series of LF Projects, LLC.

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.

SPDX-License-Identifier: Apache-2.0
*/

package instance

import (
	"context"
	"time"

	"github.com/cloudnative-pg/barman-cloud/pkg/catalog"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/client-go/util/retry"
	"k8s.io/utils/ptr"
	"sigs.k8s.io/controller-runtime/pkg/client"

	barmancloudv1 "github.com/cloudnative-pg/plugin-barman-cloud/api/v1"
)

// updateRecoveryWindow updates the recovery window inside the object
// store status subresource
func updateRecoveryWindow(
	ctx context.Context,
	c client.Client,
	backupList *catalog.Catalog,
	objectStore *barmancloudv1.ObjectStore,
	serverName string,
) error {
	// Set the recovery window inside the barman object store object
	convertTime := func(t *time.Time) *metav1.Time {
		if t == nil {
			return nil
		}
		return ptr.To(metav1.NewTime(*t))
	}

	recoveryWindow := objectStore.Status.ServerRecoveryWindow[serverName]
	recoveryWindow.FirstRecoverabilityPoint = convertTime(backupList.GetFirstRecoverabilityPoint())
	recoveryWindow.LastSuccessfulBackupTime = convertTime(backupList.GetLastSuccessfulBackupTime())

	if objectStore.Status.ServerRecoveryWindow == nil {
		objectStore.Status.ServerRecoveryWindow = make(map[string]barmancloudv1.RecoveryWindow)
	}
	objectStore.Status.ServerRecoveryWindow[serverName] = recoveryWindow

	return c.Status().Update(ctx, objectStore)
}

// setLastFailedBackupTime sets the last failed backup time in the
// passed object store, for the passed server name.
func setLastFailedBackupTime(
	ctx context.Context,
	c client.Client,
	objectStoreKey client.ObjectKey,
	serverName string,
	lastFailedBackupTime time.Time,
) error {
	return retry.RetryOnConflict(retry.DefaultBackoff, func() error {
		var objectStore barmancloudv1.ObjectStore

		if err := c.Get(ctx, objectStoreKey, &objectStore); err != nil {
			return err
		}
		recoveryWindow := objectStore.Status.ServerRecoveryWindow[serverName]
		recoveryWindow.LastFailedBackupTime = ptr.To(metav1.NewTime(lastFailedBackupTime))

		if objectStore.Status.ServerRecoveryWindow == nil {
			objectStore.Status.ServerRecoveryWindow = make(map[string]barmancloudv1.RecoveryWindow)
		}
		objectStore.Status.ServerRecoveryWindow[serverName] = recoveryWindow

		return c.Status().Update(ctx, &objectStore)
	})
}