// 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 baremetal

import (
	"context"

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

	api "yunion.io/x/onecloud/pkg/apis/compute"
	"yunion.io/x/onecloud/pkg/cloudcommon/db"
	"yunion.io/x/onecloud/pkg/cloudcommon/db/taskman"
	"yunion.io/x/onecloud/pkg/compute/models"
	"yunion.io/x/onecloud/pkg/util/logclient"
)

type BaremetalUnconvertHypervisorTask struct {
	SBaremetalBaseTask
}

func init() {
	taskman.RegisterTask(BaremetalUnconvertHypervisorTask{})
}

func (self *BaremetalUnconvertHypervisorTask) OnInit(ctx context.Context, obj db.IStandaloneModel, body jsonutils.JSONObject) {
	baremetal := obj.(*models.SHost)
	baremetal.SetStatus(ctx, self.UserCred, api.BAREMETAL_CONVERTING, "")
	guests, err := baremetal.GetGuests()
	if err != nil {
		self.SetStageFailed(ctx, jsonutils.NewString(errors.Wrapf(err, "baremetal.GetGuests").Error()))
		return
	}
	if len(guests) > 1 {
		self.SetStageFailed(ctx, jsonutils.NewString("Host guest conut > 1"))
		return
	}
	if len(guests) == 1 {
		guest := guests[0]
		self.SetStage("OnGuestDeleteComplete", nil)
		opts := api.ServerDeleteInput{OverridePendingDelete: true}
		guest.StartDeleteGuestTask(ctx, self.UserCred, self.GetTaskId(), opts)
	} else {
		self.OnGuestDeleteComplete(ctx, baremetal, nil)
	}
	models.IsolatedDeviceManager.DeleteDevicesByHost(ctx, self.GetUserCred(), baremetal)
}

func (self *BaremetalUnconvertHypervisorTask) OnGuestDeleteComplete(ctx context.Context, baremetal *models.SHost, body jsonutils.JSONObject) {
	db.OpsLog.LogEvent(baremetal, db.ACT_UNCONVERT_COMPLETE, "", self.UserCred)
	logclient.AddActionLogWithContext(ctx, baremetal, logclient.ACT_UNCONVERT_COMPLETE, nil, self.UserCred, true)
	driver, err := baremetal.GetHostDriver()
	if err != nil {
		self.SetStageFailed(ctx, jsonutils.NewString(errors.Wrapf(err, "GetHostDriver").Error()))
		return
	}
	err = driver.FinishUnconvert(ctx, self.UserCred, baremetal)
	if err != nil {
		log.Errorf("Fail to exec finish_unconvert: %s", err.Error())
	}
	self.SetStage("OnPrepareComplete", nil)
	baremetal.StartPrepareTask(ctx, self.UserCred, "", self.GetTaskId())
	logclient.AddActionLogWithStartable(self, baremetal, logclient.ACT_BM_UNCONVERT_HYPER, nil, self.UserCred, true)
}

func (self *BaremetalUnconvertHypervisorTask) OnGuestDeleteCompleteFailed(ctx context.Context, baremetal *models.SHost, body jsonutils.JSONObject) {
	db.OpsLog.LogEvent(baremetal, db.ACT_UNCONVERT_FAIL, body, self.UserCred)
	logclient.AddActionLogWithContext(ctx, baremetal, logclient.ACT_UNCONVERT_COMPLETE, nil, self.UserCred, false)
	self.SetStage("OnFailSyncstatusComplete", nil)
	baremetal.StartSyncstatus(ctx, self.UserCred, self.GetTaskId())
	logclient.AddActionLogWithStartable(self, baremetal, logclient.ACT_BM_UNCONVERT_HYPER, body, self.UserCred, false)
}

func (self *BaremetalUnconvertHypervisorTask) OnPrepareComplete(ctx context.Context, baremetal *models.SHost, body jsonutils.JSONObject) {
	self.SetStageComplete(ctx, nil)
}

func (self *BaremetalUnconvertHypervisorTask) OnFailSyncstatusComplete(ctx context.Context, baremetal *models.SHost, body jsonutils.JSONObject) {
	self.SetStageFailed(ctx, jsonutils.NewString("Delete server failed"))
}