// 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 tasks

import (
	"context"

	"yunion.io/x/jsonutils"
	"yunion.io/x/log"
	"yunion.io/x/pkg/errors"
	"yunion.io/x/pkg/utils"

	"yunion.io/x/onecloud/pkg/mcclient"
	"yunion.io/x/onecloud/pkg/util/ssh"
)

type IServerBaseDeployTask interface {
	IPXEBootTask

	DoDeploys(term *ssh.Client) (jsonutils.JSONObject, error)
	PostDeploys(term *ssh.Client) error
}

type SBaremetalServerBaseDeployTask struct {
	SBaremetalPXEBootTaskBase
}

func newBaremetalServerBaseDeployTask(
	userCred mcclient.TokenCredential,
	baremetal IBaremetal,
	taskId string,
	data jsonutils.JSONObject,
) SBaremetalServerBaseDeployTask {
	task := SBaremetalServerBaseDeployTask{
		SBaremetalPXEBootTaskBase: newBaremetalPXEBootTaskBase(userCred, baremetal, taskId, data),
	}
	// any inheritance must call:
	// task.SetStage(task.InitPXEBootTask)
	return task
}

func (self *SBaremetalServerBaseDeployTask) IServerBaseDeployTask() IServerBaseDeployTask {
	return self.GetVirtualObject().(IServerBaseDeployTask)
}

func (self *SBaremetalServerBaseDeployTask) GetName() string {
	return "BaremetalServerBaseDeployTask"
}

func (self *SBaremetalServerBaseDeployTask) GetFinishAction() string {
	if self.data != nil {
		action, _ := self.data.GetString("on_finish")
		return action
	}
	return ""
}

func (self *SBaremetalServerBaseDeployTask) DoDeploys(_ *ssh.Client) (jsonutils.JSONObject, error) {
	return nil, nil
}

func (self *SBaremetalServerBaseDeployTask) PostDeploys(_ *ssh.Client) error {
	return nil
}

func (self *SBaremetalServerBaseDeployTask) OnPXEBoot(ctx context.Context, term *ssh.Client, args interface{}) error {
	log.Infof("%s called on stage pxeboot, args: %v", self.GetName(), args)
	result, err := self.IServerBaseDeployTask().DoDeploys(term)
	if err != nil {
		return errors.Wrap(err, "Do deploy")
	}
	_, err = term.Run(
		"/bin/sync",
		"/sbin/sysctl -w vm.drop_caches=3",
	)
	if err != nil {
		return errors.Wrap(err, "Sync disk")
	}
	if err := self.IServerBaseDeployTask().PostDeploys(term); err != nil {
		return errors.Wrap(err, "post deploy")
	}
	onFinishAction := self.GetFinishAction()
	if utils.IsInStringArray(onFinishAction, []string{"restart", "shutdown"}) {
		err = self.EnsurePowerShutdown(false)
		if err != nil {
			return errors.Wrap(err, "Ensure power off")
		}
		if onFinishAction == "restart" {
			err = self.EnsurePowerUp()
			if err != nil {
				return errors.Wrap(err, "Ensure power up")
			}
		}
	}
	self.Baremetal.AutoSyncAllStatus()
	SetTaskComplete(self, result)
	return nil
}