//
// DISCLAIMER
//
// Copyright 2016-2023 ArangoDB GmbH, Cologne, Germany
//
// 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.
//
// Copyright holder is ArangoDB GmbH, Cologne, Germany
//

package backup

import (
	"time"

	"github.com/arangodb/go-driver"

	backupApi "github.com/arangodb/kube-arangodb/pkg/apis/backup/v1"
)

func stateCreateHandler(h *handler, backup *backupApi.ArangoBackup) (*backupApi.ArangoBackupStatus, error) {
	deployment, err := h.getArangoDeploymentObject(backup)
	if err != nil {
		return nil, err
	}

	client, err := h.arangoClientFactory(deployment, backup)
	if err != nil {
		return nil, newTemporaryError(err)
	}

	response, err := client.Create()
	if err != nil {
		return wrapUpdateStatus(backup,
			updateStatusState(backupApi.ArangoBackupStateCreateError, "Create failed with error: %s", err.Error()),
			cleanStatusJob(),
			updateStatusAvailable(false),
			addBackOff(backup.Spec),
		)
	}

	backupMeta, err := client.Get(response.ID)
	if err != nil {
		if driver.IsNotFound(err) {
			return wrapUpdateStatus(backup,
				updateStatusState(backupApi.ArangoBackupStateFailed,
					"backup is not present after creation"),
				cleanStatusJob(),
			)
		}

		return nil, newFatalError(err)
	}

	return wrapUpdateStatus(backup,
		updateStatusState(backupApi.ArangoBackupStateReady, ""),
		updateStatusAvailable(true),
		updateStatusBackup(backupMeta),
		cleanBackOff(),
	)
}

func stateCreateErrorHandler(h *handler, backup *backupApi.ArangoBackup) (*backupApi.ArangoBackupStatus, error) {
	// no more retries - move to failed state
	if !backup.Status.Backoff.ShouldBackoff(backup.Spec.Backoff) {
		return wrapUpdateStatus(backup,
			updateStatusState(backupApi.ArangoBackupStateFailed, "out of Create retries"),
			cleanStatusJob())
	}

	// if we should retry - move to create state
	if backup.Status.Backoff.ShouldBackoff(backup.Spec.Backoff) && !backup.Status.Backoff.GetNext().After(time.Now()) {
		return wrapUpdateStatus(backup,
			updateStatusState(backupApi.ArangoBackupStateCreate, ""),
			cleanStatusJob())
	}

	// no ready to retry - wait (do not change state)
	return wrapUpdateStatus(backup)
}