// 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 guest

import (
	"context"

	"yunion.io/x/jsonutils"
	"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 GuestInsertIsoTask struct {
	SGuestBaseTask
}

func init() {
	taskman.RegisterTask(GuestInsertIsoTask{})
	taskman.RegisterTask(HaGuestInsertIsoTask{})
}

func (self *GuestInsertIsoTask) OnInit(ctx context.Context, obj db.IStandaloneModel, data jsonutils.JSONObject) {
	self.prepareIsoImage(ctx, obj)
}

func (self *GuestInsertIsoTask) prepareIsoImage(ctx context.Context, obj db.IStandaloneModel) {
	guest := obj.(*models.SGuest)
	imageId, _ := self.Params.GetString("image_id")
	cdromOrdinal, _ := self.Params.Int("cdrom_ordinal")
	db.OpsLog.LogEvent(obj, db.ACT_ISO_PREPARING, imageId, self.UserCred)

	disks, _ := guest.GetGuestDisks()
	disk := disks[0].GetDisk()
	storage, _ := disk.GetStorage()
	storageCache := storage.GetStoragecache()

	if storageCache != nil {
		self.SetStage("OnIsoPrepareComplete", nil)
		input := api.CacheImageInput{
			ImageId:      imageId,
			Format:       "iso",
			ParentTaskId: self.GetTaskId(),
			ServerId:     guest.Id,
		}
		storageCache.StartImageCacheTask(ctx, self.UserCred, input)
	} else {
		guest.EjectIso(cdromOrdinal, self.UserCred)
		db.OpsLog.LogEvent(obj, db.ACT_ISO_PREPARE_FAIL, imageId, self.UserCred)
		logclient.AddActionLogWithContext(ctx, guest, logclient.ACT_ISO_ATTACH, nil, self.UserCred, false)
		self.SetStageFailed(ctx, jsonutils.NewString("host no local storage cache"))
	}
}

func (self *GuestInsertIsoTask) OnIsoPrepareCompleteFailed(ctx context.Context, obj db.IStandaloneModel, data jsonutils.JSONObject) {
	imageId, _ := self.Params.GetString("image_id")
	cdromOrdinal, _ := self.Params.Int("cdrom_ordinal")
	db.OpsLog.LogEvent(obj, db.ACT_ISO_PREPARE_FAIL, imageId, self.UserCred)
	guest := obj.(*models.SGuest)
	guest.EjectIso(cdromOrdinal, self.UserCred)
	logclient.AddActionLogWithContext(ctx, guest, logclient.ACT_ISO_ATTACH, nil, self.UserCred, false)
	self.SetStageFailed(ctx, data)
}

func (self *GuestInsertIsoTask) OnIsoPrepareComplete(ctx context.Context, obj db.IStandaloneModel, data jsonutils.JSONObject) {
	imageId, _ := data.GetString("image_id")
	cdromOrdinal, _ := self.Params.Int("cdrom_ordinal")
	size, err := data.Int("size")
	if err != nil {
		self.SetStageFailed(ctx, jsonutils.NewString(errors.Wrapf(err, "get image size").Error()))
		return
	}
	name, _ := data.GetString("name")
	path, _ := data.GetString("path")
	var bootIndex *int8
	if self.Params.Contains("boot_index") {
		bd, _ := self.Params.Int("boot_index")
		bd8 := int8(bd)
		bootIndex = &bd8
	}

	guest := obj.(*models.SGuest)
	if cdrom, ok := guest.InsertIsoSucc(cdromOrdinal, imageId, path, size, name, bootIndex); ok {
		db.OpsLog.LogEvent(guest, db.ACT_ISO_ATTACH, cdrom.GetDetails(), self.UserCred)
		logclient.AddActionLogWithContext(ctx, guest, logclient.ACT_ISO_ATTACH, cdrom.GetDetails(), self.UserCred, true)
		drv, err := guest.GetDriver()
		if err != nil {
			self.OnIsoPrepareCompleteFailed(ctx, guest, jsonutils.NewString(err.Error()))
			return
		}
		if drv.NeedRequestGuestHotAddIso(ctx, guest) {
			self.SetStage("OnConfigSyncComplete", nil)
			boot := jsonutils.QueryBoolean(self.Params, "boot", false)
			drv.RequestGuestHotAddIso(ctx, guest, path, boot, self)
		} else {
			self.SetStageComplete(ctx, nil)
		}
	} else {
		self.SetStageComplete(ctx, nil)
	}
}

func (self *GuestInsertIsoTask) OnConfigSyncComplete(ctx context.Context, obj db.IStandaloneModel, data jsonutils.JSONObject) {
	self.SetStageComplete(ctx, nil)
}

type HaGuestInsertIsoTask struct {
	GuestInsertIsoTask
}

func (self *HaGuestInsertIsoTask) OnInit(ctx context.Context, obj db.IStandaloneModel, data jsonutils.JSONObject) {
	self.prepareIsoImage(ctx, obj)
}

func (self *HaGuestInsertIsoTask) prepareIsoImage(ctx context.Context, obj db.IStandaloneModel) {
	guest := obj.(*models.SGuest)
	imageId, _ := self.Params.GetString("image_id")
	cdromOrdinal, _ := self.Params.Int("cdrom_ordinal")
	db.OpsLog.LogEvent(obj, db.ACT_ISO_PREPARING, imageId, self.UserCred)
	disks, _ := guest.GetGuestDisks()
	disk := disks[0].GetDisk()
	storage := disk.GetBackupStorage()
	storageCache := storage.GetStoragecache()
	if storageCache != nil {
		self.SetStage("OnBackupIsoPrepareComplete", nil)
		input := api.CacheImageInput{
			ImageId:      imageId,
			Format:       "iso",
			ParentTaskId: self.GetTaskId(),
		}
		storageCache.StartImageCacheTask(ctx, self.UserCred, input)
	} else {
		guest.EjectIso(cdromOrdinal, self.UserCred)
		db.OpsLog.LogEvent(obj, db.ACT_ISO_PREPARE_FAIL, imageId, self.UserCred)
		self.SetStageFailed(ctx, jsonutils.NewString("host no local storage cache"))
	}
}

func (self *HaGuestInsertIsoTask) OnBackupIsoPrepareComplete(
	ctx context.Context, guest *models.SGuest, data jsonutils.JSONObject,
) {
	self.GuestInsertIsoTask.prepareIsoImage(ctx, guest)
}

func (self *HaGuestInsertIsoTask) OnBackupIsoPrepareCompleteFailed(
	ctx context.Context, guest *models.SGuest, data jsonutils.JSONObject,
) {
	self.OnIsoPrepareCompleteFailed(ctx, guest, data)
}