// Copyright 2019 Yunion
//
// 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 storagedrivers

import (
	"context"
	"time"

	"yunion.io/x/jsonutils"
	"yunion.io/x/log"

	api "yunion.io/x/onecloud/pkg/apis/compute"
	"yunion.io/x/onecloud/pkg/cloudcommon/db"
	"yunion.io/x/onecloud/pkg/compute/models"
	"yunion.io/x/onecloud/pkg/compute/options"
	"yunion.io/x/onecloud/pkg/httperrors"
	"yunion.io/x/onecloud/pkg/mcclient"
)

type SNfsStorageDriver struct {
	SBaseStorageDriver
}

func init() {
	driver := SNfsStorageDriver{}
	models.RegisterStorageDriver(&driver)
}

func (self *SNfsStorageDriver) GetStorageType() string {
	return api.STORAGE_NFS
}

func (self *SNfsStorageDriver) ValidateCreateData(ctx context.Context, userCred mcclient.TokenCredential, input *api.StorageCreateInput) error {
	input.StorageConf = jsonutils.NewDict()
	if len(input.NfsHost) == 0 {
		return httperrors.NewMissingParameterError("nfs_host")
	}
	if len(input.NfsSharedDir) == 0 {
		return httperrors.NewMissingParameterError("nfs_shared_dir")
	}
	input.StorageConf.Update(jsonutils.Marshal(map[string]string{
		"nfs_host":       input.NfsHost,
		"nfs_shared_dir": input.NfsSharedDir,
	}))
	return nil
}

func (self *SNfsStorageDriver) PostCreate(ctx context.Context, userCred mcclient.TokenCredential, storage *models.SStorage, data jsonutils.JSONObject) {
	sc := &models.SStoragecache{}
	sc.Path = options.Options.DefaultImageCacheDir
	sc.ExternalId = storage.Id
	sc.Name = "nfs-" + storage.Name + time.Now().Format("2006-01-02 15:04:05")
	if err := models.StoragecacheManager.TableSpec().Insert(ctx, sc); err != nil {
		log.Errorf("insert storagecache for storage %s error: %v", storage.Name, err)
		return
	}
	_, err := db.Update(storage, func() error {
		storage.StoragecacheId = sc.Id
		storage.Status = api.STORAGE_ONLINE
		return nil
	})
	if err != nil {
		log.Errorf("update storagecache info for storage %s error: %v", storage.Name, err)
	}
}