package models

import (
	"context"
	"database/sql"
	"fmt"

	"yunion.io/x/jsonutils"
	"yunion.io/x/log"
	"yunion.io/x/pkg/tristate"
	"yunion.io/x/pkg/util/compare"
	"yunion.io/x/pkg/utils"
	"yunion.io/x/sqlchemy"

	"yunion.io/x/onecloud/pkg/cloudcommon/db"
	"yunion.io/x/onecloud/pkg/cloudcommon/db/lockman"
	"yunion.io/x/onecloud/pkg/cloudcommon/db/quotas"
	"yunion.io/x/onecloud/pkg/cloudcommon/db/taskman"
	"yunion.io/x/onecloud/pkg/cloudprovider"
	"yunion.io/x/onecloud/pkg/httperrors"
	"yunion.io/x/onecloud/pkg/mcclient"
)

const (
	EIP_MODE_INSTANCE_PUBLICIP = "public_ip"
	EIP_MODE_STANDALONE_EIP    = "elastic_ip"

	EIP_ASSOCIATE_TYPE_SERVER = "server"

	EIP_STATUS_READY           = "ready"
	EIP_STATUS_UNKNOWN         = "unknown"
	EIP_STATUS_ALLOCATE        = "allocate"
	EIP_STATUS_ALLOCATE_FAIL   = "allocate_fail"
	EIP_STATUS_DEALLOCATE      = "deallocate"
	EIP_STATUS_DEALLOCATE_FAIL = "deallocate_fail"
	EIP_STATUS_ASSOCIATE       = "associate"
	EIP_STATUS_ASSOCIATE_FAIL  = "associate_fail"
	EIP_STATUS_DISSOCIATE      = "dissociate"
	EIP_STATUS_DISSOCIATE_FAIL = "dissociate_fail"

	EIP_STATUS_CHANGE_BANDWIDTH = "change_bandwidth"

	EIP_CHARGE_TYPE_BY_TRAFFIC   = "traffic"
	EIP_CHARGE_TYPE_BY_BANDWIDTH = "bandwidth"
	EIP_CHARGE_TYPE_DEFAULT      = EIP_CHARGE_TYPE_BY_TRAFFIC
)

type SElasticipManager struct {
	db.SVirtualResourceBaseManager
}

var ElasticipManager *SElasticipManager

func init() {
	ElasticipManager = &SElasticipManager{SVirtualResourceBaseManager: db.NewVirtualResourceBaseManager(SElasticip{}, "elasticips_tbl", "eip", "eips")}
}

type SElasticip struct {
	db.SVirtualResourceBase

	SManagedResourceBase

	Mode string `width:"32" charset:"ascii" list:"user"`

	IpAddr string `width:"17" charset:"ascii" list:"user"`

	AssociateType string `width:"32" charset:"ascii" list:"user"`
	AssociateId   string `width:"256" charset:"ascii" list:"user"`

	Bandwidth int `list:"user" create:"required"`

	ChargeType string `list:"user" create:"required" default:"traffic"`

	AutoDellocate tristate.TriState `default:"false" get:"user" create:"optional"`

	CloudregionId string `width:"36" charset:"ascii" nullable:"false" list:"user" create:"required"`
}

func (manager *SElasticipManager) ListItemFilter(ctx context.Context, q *sqlchemy.SQuery, userCred mcclient.TokenCredential, query jsonutils.JSONObject) (*sqlchemy.SQuery, error) {
	q, err := manager.SVirtualResourceBaseManager.ListItemFilter(ctx, q, userCred, query)
	if err != nil {
		return nil, err
	}

	managerFilter, _ := query.GetString("manager")
	if len(managerFilter) > 0 {
		managerI, err := CloudproviderManager.FetchByIdOrName(userCred, managerFilter)
		if err != nil {
			if err == sql.ErrNoRows {
				return nil, httperrors.NewResourceNotFoundError("cloud provider %s not found", managerFilter)
			} else {
				return nil, httperrors.NewGeneralError(err)
			}
		}
		q = q.Equals("manager_id", managerI.GetId())
	}

	regionFilter, _ := query.GetString("region")
	if len(regionFilter) > 0 {
		regionObj, err := CloudregionManager.FetchByIdOrName(userCred, regionFilter)
		if err != nil {
			if err == sql.ErrNoRows {
				return nil, httperrors.NewResourceNotFoundError("cloud region %s not found", regionFilter)
			} else {
				return nil, httperrors.NewGeneralError(err)
			}
		}
		q = q.Equals("cloudregion_id", regionObj.GetId())
	}

	if query.Contains("usable") {
		usable := jsonutils.QueryBoolean(query, "usable", false)
		if usable {
			q = q.Equals("status", EIP_STATUS_READY)
			q = q.Filter(sqlchemy.OR(sqlchemy.IsNull(q.Field("associate_id")), sqlchemy.IsEmpty(q.Field("associate_id"))))
		}
	}

	return q, nil
}

func (manager *SElasticipManager) getEipsByRegion(region *SCloudregion, provider *SCloudprovider) ([]SElasticip, error) {
	eips := make([]SElasticip, 0)
	q := manager.Query().Equals("cloudregion_id", region.Id)
	if provider != nil {
		q = q.Equals("manager_id", provider.Id)
	}
	err := db.FetchModelObjects(manager, q, &eips)
	if err != nil {
		return nil, err
	}
	return eips, nil
}

func (self *SElasticip) GetRegion() *SCloudregion {
	return CloudregionManager.FetchRegionById(self.CloudregionId)
}

func (manager *SElasticipManager) SyncEips(ctx context.Context, userCred mcclient.TokenCredential, provider *SCloudprovider, region *SCloudregion, eips []cloudprovider.ICloudEIP) compare.SyncResult {
	// localEips := make([]SElasticip, 0)
	// remoteEips := make([]cloudprovider.ICloudEIP, 0)
	syncResult := compare.SyncResult{}

	dbEips, err := manager.getEipsByRegion(region, provider)
	if err != nil {
		syncResult.Error(err)
		return syncResult
	}

	removed := make([]SElasticip, 0)
	commondb := make([]SElasticip, 0)
	commonext := make([]cloudprovider.ICloudEIP, 0)
	added := make([]cloudprovider.ICloudEIP, 0)

	err = compare.CompareSets(dbEips, eips, &removed, &commondb, &commonext, &added)
	if err != nil {
		syncResult.Error(err)
		return syncResult
	}

	for i := 0; i < len(removed); i += 1 {
		err = removed[i].SetStatus(userCred, EIP_STATUS_UNKNOWN, "sync to delete")
		if err != nil {
			syncResult.DeleteError(err)
		} else {
			syncResult.Delete()
		}
	}
	for i := 0; i < len(commondb); i += 1 {
		err = commondb[i].SyncWithCloudEip(userCred, commonext[i])
		if err != nil {
			syncResult.UpdateError(err)
		} else {
			syncResult.Update()
		}
	}
	for i := 0; i < len(added); i += 1 {
		_, err := manager.newFromCloudEip(userCred, added[i], region)
		if err != nil {
			syncResult.AddError(err)
		} else {
			syncResult.Add()
		}
	}

	return syncResult
}

func (self *SElasticip) SyncInstanceWithCloudEip(ctx context.Context, userCred mcclient.TokenCredential, ext cloudprovider.ICloudEIP) error {
	vm := self.GetAssociateVM()
	vmExtId := ext.GetAssociationExternalId()

	if vm == nil && len(vmExtId) == 0 {
		return nil
	}
	if vm != nil && vm.ExternalId == vmExtId {
		return nil
	}

	if vm != nil { // dissociate
		err := self.Dissociate(ctx, userCred)
		if err != nil {
			log.Errorf("fail to dissociate vm: %s", err)
			return err
		}
	}

	if len(vmExtId) > 0 {
		newVM, err := GuestManager.FetchByExternalId(vmExtId)
		if err != nil {
			log.Errorf("fail to find vm by external ID %s", vmExtId)
			return err
		}
		err = self.AssociateVM(userCred, newVM.(*SGuest))
		if err != nil {
			log.Errorf("fail to associate with new vm %s", err)
			return err
		}
	}

	return nil
}

func (self *SElasticip) SyncWithCloudEip(userCred mcclient.TokenCredential, ext cloudprovider.ICloudEIP) error {
	_, err := self.GetModelManager().TableSpec().Update(self, func() error {

		// self.Name = ext.GetName()
		self.Bandwidth = ext.GetBandwidth()
		self.IpAddr = ext.GetIpAddr()
		self.Mode = ext.GetMode()
		self.Status = ext.GetStatus()
		self.ExternalId = ext.GetGlobalId()
		// self.ManagerId = ext.GetManagerId()
		self.IsEmulated = ext.IsEmulated()
		self.ProjectId = userCred.GetProjectId()
		if manageId := ext.GetManagerId(); len(manageId) > 0 {
			if provider := CloudproviderManager.FetchCloudproviderById(manageId); provider != nil {
				self.ProjectId = provider.ProjectId
			}
		}
		self.ChargeType = ext.GetInternetChargeType()

		return nil
	})
	if err != nil {
		log.Errorf("SyncWithCloudEip fail %s", err)
	}
	return err
}

func (manager *SElasticipManager) newFromCloudEip(userCred mcclient.TokenCredential, extEip cloudprovider.ICloudEIP, region *SCloudregion) (*SElasticip, error) {
	eip := SElasticip{}
	eip.SetModelManager(manager)

	eip.Name = extEip.GetName()
	eip.Status = extEip.GetStatus()
	eip.ExternalId = extEip.GetGlobalId()
	eip.IpAddr = extEip.GetIpAddr()
	eip.Mode = extEip.GetMode()
	eip.IsEmulated = extEip.IsEmulated()
	eip.ManagerId = extEip.GetManagerId()
	eip.CloudregionId = region.Id
	eip.ChargeType = extEip.GetInternetChargeType()

	eip.ProjectId = userCred.GetProjectId()
	if manageId := extEip.GetManagerId(); len(manageId) > 0 {
		if provider := CloudproviderManager.FetchCloudproviderById(manageId); provider != nil {
			eip.ProjectId = provider.ProjectId
		}
	}
	err := manager.TableSpec().Insert(&eip)
	if err != nil {
		log.Errorf("newFromCloudEip fail %s", err)
		return nil, err
	}
	return &eip, nil
}

func (manager *SElasticipManager) getEipForInstance(instanceType string, instanceId string) (*SElasticip, error) {
	eip := SElasticip{}

	q := manager.Query()
	q = q.Equals("associate_type", instanceType)
	q = q.Equals("associate_id", instanceId)

	err := q.First(&eip)

	if err != nil {
		if err != sql.ErrNoRows {
			log.Errorf("getEipForInstance query fail %s", err)
			return nil, err
		} else {
			return nil, nil
		}
	}

	eip.SetModelManager(manager)

	return &eip, nil
}

func (self *SElasticip) GetAssociateVM() *SGuest {
	if self.AssociateType == "server" && len(self.AssociateId) > 0 {
		return GuestManager.FetchGuestById(self.AssociateId)
	}
	return nil
}

func (self *SElasticip) Dissociate(ctx context.Context, userCred mcclient.TokenCredential) error {
	if len(self.AssociateType) == 0 {
		return nil
	}
	vm := self.GetAssociateVM()
	if vm == nil {
		log.Errorf("dissociate VM not exists???")
	}
	_, err := self.GetModelManager().TableSpec().Update(self, func() error {
		self.AssociateId = ""
		self.AssociateType = ""
		return nil
	})
	if err != nil {
		return err
	}
	if vm != nil {
		db.OpsLog.LogDetachEvent(vm, self, userCred, self.GetShortDesc())
		db.OpsLog.LogEvent(self, db.ACT_EIP_DETACH, vm.GetShortDesc(), userCred)
		db.OpsLog.LogEvent(vm, db.ACT_EIP_DETACH, self.GetShortDesc(), userCred)
	}
	if self.Mode == EIP_MODE_INSTANCE_PUBLICIP {
		self.Delete(ctx, userCred)
	}
	return nil
}

func (self *SElasticip) AssociateVM(userCred mcclient.TokenCredential, vm *SGuest) error {
	if len(self.AssociateType) > 0 {
		return fmt.Errorf("EIP has been associated!!")
	}
	_, err := self.GetModelManager().TableSpec().Update(self, func() error {
		self.AssociateType = "server"
		self.AssociateId = vm.Id
		return nil
	})
	if err != nil {
		return err
	}

	db.OpsLog.LogAttachEvent(vm, self, userCred, self.GetShortDesc())
	db.OpsLog.LogEvent(self, db.ACT_EIP_ATTACH, vm.GetShortDesc(), userCred)
	db.OpsLog.LogEvent(vm, db.ACT_EIP_ATTACH, self.GetShortDesc(), userCred)

	return nil
}

func (manager *SElasticipManager) getEipByExtEip(userCred mcclient.TokenCredential, extEip cloudprovider.ICloudEIP, region *SCloudregion) (*SElasticip, error) {
	eipObj, err := manager.FetchByExternalId(extEip.GetGlobalId())
	if err == nil {
		return eipObj.(*SElasticip), nil
	}
	if err != sql.ErrNoRows {
		log.Errorf("FetchByExternalId fail %s", err)
		return nil, err
	}

	return manager.newFromCloudEip(userCred, extEip, region)
}

func (manager *SElasticipManager) ValidateCreateData(ctx context.Context, userCred mcclient.TokenCredential, ownerProjId string, query jsonutils.JSONObject, data *jsonutils.JSONDict) (*jsonutils.JSONDict, error) {
	regionStr := jsonutils.GetAnyString(data, []string{"region", "region_id"})
	if len(regionStr) == 0 {
		return nil, httperrors.NewInputParameterError("Missing region/region_id")
	}
	region, err := CloudregionManager.FetchByIdOrName(nil, regionStr)
	if err != nil {
		if err != sql.ErrNoRows {
			return nil, httperrors.NewGeneralError(err)
		} else {
			return nil, httperrors.NewResourceNotFoundError("Region %s not found", regionStr)
		}
	}
	data.Add(jsonutils.NewString(region.GetId()), "cloudregion_id")

	managerStr := jsonutils.GetAnyString(data, []string{"manager", "manager_id"})
	if len(managerStr) == 0 {
		return nil, httperrors.NewInputParameterError("Missing manager/manager_id")
	}

	provider, err := CloudproviderManager.FetchByIdOrName(nil, managerStr)
	if err != nil {
		if err != sql.ErrNoRows {
			return nil, httperrors.NewGeneralError(err)
		} else {
			return nil, httperrors.NewResourceNotFoundError("Cloud provider %s not found", managerStr)
		}
	}
	data.Add(jsonutils.NewString(provider.GetId()), "manager_id")

	chargeType := jsonutils.GetAnyString(data, []string{"charge_type"})
	if len(chargeType) == 0 {
		chargeType = EIP_CHARGE_TYPE_DEFAULT
	}

	if !utils.IsInStringArray(chargeType, []string{EIP_CHARGE_TYPE_BY_BANDWIDTH, EIP_CHARGE_TYPE_BY_TRAFFIC}) {
		return nil, httperrors.NewInputParameterError("charge type %s not supported", chargeType)
	}

	data.Add(jsonutils.NewString(chargeType), "charge_type")

	eipPendingUsage := &SQuota{Eip: 1}
	err = QuotaManager.CheckSetPendingQuota(ctx, userCred, userCred.GetProjectId(), eipPendingUsage)
	if err != nil {
		return nil, httperrors.NewOutOfQuotaError("Out of eip quota: %s", err)
	}

	data, err = manager.SVirtualResourceBaseManager.ValidateCreateData(ctx, userCred, ownerProjId, query, data)
	if err != nil {
		return nil, err
	}

	return data, nil
}

func (self *SElasticip) PostCreate(ctx context.Context, userCred mcclient.TokenCredential, ownerProjId string, query jsonutils.JSONObject, data jsonutils.JSONObject) {
	self.SVirtualResourceBase.PostCreate(ctx, userCred, ownerProjId, query, data)
	eipPendingUsage := &SQuota{Eip: 1}
	self.startEipAllocateTask(ctx, userCred, nil, eipPendingUsage)
}

func (self *SElasticip) startEipAllocateTask(ctx context.Context, userCred mcclient.TokenCredential, params *jsonutils.JSONDict, pendingUsage quotas.IQuota) error {
	task, err := taskman.TaskManager.NewTask(ctx, "EipAllocateTask", self, userCred, params, "", "", pendingUsage)
	if err != nil {
		log.Errorf("newtask EipAllocateTask fail %s", err)
		return err
	}
	self.SetStatus(userCred, EIP_STATUS_ALLOCATE, "start allocate")
	task.ScheduleRun(nil)
	return nil
}

func (self *SElasticip) Delete(ctx context.Context, userCred mcclient.TokenCredential) error {
	log.Infof("Elasticip delete do nothing")
	return nil
}

func (self *SElasticip) RealDelete(ctx context.Context, userCred mcclient.TokenCredential) error {
	return self.SVirtualResourceBase.Delete(ctx, userCred)
}

func (self *SElasticip) CustomizeDelete(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) error {
	return self.StartEipDeallocateTask(ctx, userCred, "")
}

func (self *SElasticip) ValidateDeleteCondition(ctx context.Context) error {
	if len(self.AssociateId) > 0 {
		return fmt.Errorf("eip is associated with instance")
	}
	return self.SVirtualResourceBase.ValidateDeleteCondition(ctx)
}

func (self *SElasticip) StartEipDeallocateTask(ctx context.Context, userCred mcclient.TokenCredential, parentTaskId string) error {
	task, err := taskman.TaskManager.NewTask(ctx, "EipDeallocateTask", self, userCred, nil, parentTaskId, "", nil)
	if err != nil {
		log.Errorf("newTask EipDeallocateTask fail %s", err)
		return err
	}
	self.SetStatus(userCred, EIP_STATUS_DEALLOCATE, "start to delete")
	task.ScheduleRun(nil)
	return nil
}

func (self *SElasticip) AllowPerformAssociate(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) bool {
	return self.IsOwner(userCred)
}

func (self *SElasticip) PerformAssociate(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) (jsonutils.JSONObject, error) {
	if len(self.AssociateId) > 0 {
		return nil, httperrors.NewConflictError("eip has been associated with instance")
	}

	if self.Status != EIP_STATUS_READY {
		return nil, httperrors.NewInvalidStatusError("eip cannot associate in status %s", self.Status)
	}

	if self.Mode == EIP_MODE_INSTANCE_PUBLICIP {
		return nil, httperrors.NewUnsupportOperationError("fixed eip cannot be associated")
	}

	instanceId := jsonutils.GetAnyString(data, []string{"instance", "instance_id"})
	if len(instanceId) == 0 {
		return nil, httperrors.NewInputParameterError("Missing instance_id")
	}
	instanceType := jsonutils.GetAnyString(data, []string{"instance_type"})
	if len(instanceType) == 0 {
		instanceType = EIP_ASSOCIATE_TYPE_SERVER
	}

	if instanceType != EIP_ASSOCIATE_TYPE_SERVER {
		return nil, httperrors.NewInputParameterError("Unsupported %s", instanceType)
	}

	vmObj, err := GuestManager.FetchByIdOrName(userCred, instanceId)
	if err != nil {
		if err == sql.ErrNoRows {
			return nil, httperrors.NewResourceNotFoundError("server %s not found", instanceId)
		} else {
			return nil, httperrors.NewGeneralError(err)
		}
	}

	server := vmObj.(*SGuest)

	lockman.LockObject(ctx, server)
	defer lockman.ReleaseObject(ctx, server)

	if server.PendingDeleted {
		return nil, httperrors.NewInvalidStatusError("cannot associate pending delete server")
	}

	seip, _ := server.GetEip()
	if seip != nil {
		return nil, httperrors.NewInvalidStatusError("instance is already associated with eip")
	}

	if ok, _ := utils.InStringArray(server.Status, []string{VM_READY, VM_RUNNING}); !ok {
		return nil, httperrors.NewInvalidStatusError("cannot associate server in status %s", server.Status)
	}

	serverRegion := server.getRegion()
	if serverRegion == nil {
		return nil, httperrors.NewInputParameterError("server region is not found???")
	}

	eipRegion := self.GetRegion()
	if eipRegion == nil {
		return nil, httperrors.NewInputParameterError("eip region is not found???")
	}

	if serverRegion.Id != eipRegion.Id {
		return nil, httperrors.NewInputParameterError("eip and server are not in the same region")
	}

	srvHost := server.GetHost()
	if srvHost == nil {
		return nil, httperrors.NewInputParameterError("server host is not found???")
	}

	if srvHost.ManagerId != self.ManagerId {
		return nil, httperrors.NewInputParameterError("server and eip are not managed by the same provider")
	}

	params := jsonutils.NewDict()
	params.Add(jsonutils.NewString(server.ExternalId), "instance_external_id")
	params.Add(jsonutils.NewString(server.Id), "instance_id")
	params.Add(jsonutils.NewString(EIP_ASSOCIATE_TYPE_SERVER), "instance_type")

	err = self.StartEipAssociateTask(ctx, userCred, params)
	return nil, err
}

func (self *SElasticip) StartEipAssociateTask(ctx context.Context, userCred mcclient.TokenCredential, params *jsonutils.JSONDict) error {
	task, err := taskman.TaskManager.NewTask(ctx, "EipAssociateTask", self, userCred, params, "", "", nil)
	if err != nil {
		log.Errorf("create EipAssociateTask task fail %s", err)
		return err
	}
	self.SetStatus(userCred, EIP_STATUS_ASSOCIATE, "start to associate")
	task.ScheduleRun(nil)
	return nil
}

func (self *SElasticip) AllowPerformDissociate(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) bool {
	return self.IsOwner(userCred)
}

func (self *SElasticip) PerformDissociate(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) (jsonutils.JSONObject, error) {
	if len(self.AssociateId) == 0 {
		return nil, httperrors.NewConflictError("eip is not associated with instance")
	}

	if self.Status != EIP_STATUS_READY {
		return nil, httperrors.NewInvalidStatusError("eip cannot dissociate in status %s", self.Status)
	}

	if self.Mode == EIP_MODE_INSTANCE_PUBLICIP {
		return nil, httperrors.NewUnsupportOperationError("fixed public eip cannot be dissociated")
	}

	err := self.StartEipDissociateTask(ctx, userCred, "")
	return nil, err
}

func (self *SElasticip) StartEipDissociateTask(ctx context.Context, userCred mcclient.TokenCredential, parentTaskId string) error {
	task, err := taskman.TaskManager.NewTask(ctx, "EipDissociateTask", self, userCred, nil, parentTaskId, "", nil)
	if err != nil {
		log.Errorf("create EipDissociateTask fail %s", err)
		return nil
	}
	self.SetStatus(userCred, EIP_STATUS_DISSOCIATE, "start to dissociate")
	task.ScheduleRun(nil)
	return nil
}

func (self *SElasticip) GetIRegion() (cloudprovider.ICloudRegion, error) {
	provider, err := self.GetDriver()
	if err != nil {
		return nil, err
	}

	region := self.GetRegion()
	if region == nil {
		return nil, fmt.Errorf("fail to find region for eip")
	}

	return provider.GetIRegionById(region.GetExternalId())
}

func (self *SElasticip) GetIEip() (cloudprovider.ICloudEIP, error) {
	iregion, err := self.GetIRegion()
	if err != nil {
		return nil, err
	}
	return iregion.GetIEipById(self.GetExternalId())
}

func (self *SElasticip) AllowPerformSync(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) bool {
	return self.IsOwner(userCred)
}

func (self *SElasticip) PerformSync(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) (jsonutils.JSONObject, error) {
	/*if self.Status != EIP_STATUS_READY && !strings.HasSuffix(self.Status, "_fail") {
		return nil, httperrors.NewInvalidStatusError("eip cannot syncstatus in status %s", self.Status)
	}*/

	if self.Mode == EIP_MODE_INSTANCE_PUBLICIP {
		return nil, httperrors.NewUnsupportOperationError("fixed eip cannot sync status")
	}

	err := self.StartEipSyncstatusTask(ctx, userCred, "")
	return nil, err
}

func (self *SElasticip) StartEipSyncstatusTask(ctx context.Context, userCred mcclient.TokenCredential, parentTaskId string) error {
	task, err := taskman.TaskManager.NewTask(ctx, "EipSyncstatusTask", self, userCred, nil, parentTaskId, "", nil)
	if err != nil {
		log.Errorf("create EipSyncstatusTask fail %s", err)
		return err
	}
	self.SetStatus(userCred, "sync", "synchronize")
	task.ScheduleRun(nil)
	return nil
}

func (self *SElasticip) GetExtraDetails(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject) *jsonutils.JSONDict {
	extra := self.SVirtualResourceBase.GetExtraDetails(ctx, userCred, query)
	return self.getMoreDetails(extra)
}

func (self *SElasticip) GetCustomizeColumns(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject) *jsonutils.JSONDict {
	extra := self.SVirtualResourceBase.GetCustomizeColumns(ctx, userCred, query)
	return self.getMoreDetails(extra)
}

func (self *SElasticip) getMoreDetails(extra *jsonutils.JSONDict) *jsonutils.JSONDict {
	vm := self.GetAssociateVM()
	if vm != nil {
		extra.Add(jsonutils.NewString(vm.GetName()), "associate_name")
	}
	region := self.GetRegion()
	if region != nil {
		extra.Add(jsonutils.NewString(region.GetName()), "cloudregion")
		extra.Add(jsonutils.NewString(region.GetName()), "region")
	}
	return extra
}

func (manager *SElasticipManager) allocateEipAndAssociateVM(ctx context.Context, userCred mcclient.TokenCredential, vm *SGuest, bw int, chargeType string, managerId string, regionId string) error {
	eipPendingUsage := &SQuota{Eip: 1}
	err := QuotaManager.CheckSetPendingQuota(ctx, userCred, userCred.GetProjectId(), eipPendingUsage)
	if err != nil {
		return httperrors.NewOutOfQuotaError("Out of eip quota: %s", err)
	}

	eip := SElasticip{}
	eip.SetModelManager(manager)

	eip.Mode = EIP_MODE_STANDALONE_EIP
	eip.AutoDellocate = tristate.True
	eip.Bandwidth = bw
	eip.ChargeType = chargeType
	eip.ProjectId = vm.ProjectId
	eip.ManagerId = managerId
	eip.CloudregionId = regionId
	eip.Name = fmt.Sprintf("eip-for-%s", vm.GetName())

	err = manager.TableSpec().Insert(&eip)
	if err != nil {
		log.Errorf("create EIP record fail %s", err)
		return err
	}

	params := jsonutils.NewDict()
	params.Add(jsonutils.NewString(vm.ExternalId), "instance_external_id")
	params.Add(jsonutils.NewString(vm.Id), "instance_id")
	params.Add(jsonutils.NewString(EIP_ASSOCIATE_TYPE_SERVER), "instance_type")

	return eip.startEipAllocateTask(ctx, userCred, params, eipPendingUsage)
}

func (self *SElasticip) AllowPerformChangeBandwidth(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) bool {
	return self.IsOwner(userCred)
}

func (self *SElasticip) PerformChangeBandwidth(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) (jsonutils.JSONObject, error) {
	if self.Status != EIP_STATUS_READY {
		return nil, httperrors.NewInvalidStatusError("cannot change bandwidth in status %s", self.Status)
	}

	bandwidth, err := data.Int("bandwidth")
	if err != nil || bandwidth <= 0 {
		return nil, httperrors.NewInputParameterError("Invalid bandwidth")
	}
	err = self.StartEipChangeBandwidthTask(ctx, userCred, bandwidth)
	if err != nil {
		return nil, httperrors.NewGeneralError(err)
	}
	return nil, nil
}

func (self *SElasticip) StartEipChangeBandwidthTask(ctx context.Context, userCred mcclient.TokenCredential, bandwidth int64) error {

	self.SetStatus(userCred, EIP_STATUS_CHANGE_BANDWIDTH, "change bandwidth")

	params := jsonutils.NewDict()
	params.Add(jsonutils.NewInt(bandwidth), "bandwidth")

	task, err := taskman.TaskManager.NewTask(ctx, "EipChangeBandwidthTask", self, userCred, params, "", "", nil)
	if err != nil {
		log.Errorf("create EipChangeBandwidthTask fail %s", err)
		return err
	}
	task.ScheduleRun(nil)
	return nil
}

func (self *SElasticip) DoChangeBandwidth(userCred mcclient.TokenCredential, bandwidth int) error {
	_, err := self.GetModelManager().TableSpec().Update(self, func() error {
		self.Bandwidth = bandwidth
		return nil
	})

	self.SetStatus(userCred, EIP_STATUS_READY, "finish change bandwidth")

	if err != nil {
		log.Errorf("DoChangeBandwidth update fail %s", err)
		return err
	}

	changes := jsonutils.NewDict()
	changes.Add(jsonutils.NewInt(int64(self.Bandwidth)), "obw")
	changes.Add(jsonutils.NewInt(int64(bandwidth)), "nbw")
	db.OpsLog.LogEvent(self, db.ACT_CHANGE_BANDWIDTH, changes, userCred)

	return nil
}

type EipUsage struct {
	PublicIPCount int
	EIPCount      int
	EIPUsedCount  int
}

func (u EipUsage) Total() int {
	return u.PublicIPCount + u.EIPCount
}

func (manager *SElasticipManager) usageQ(q *sqlchemy.SQuery, rangeObj db.IStandaloneModel, hostTypes []string) *sqlchemy.SQuery {
	if rangeObj == nil {
		return q
	}
	zones := ZoneManager.Query().SubQuery()
	hosts := HostManager.Query().SubQuery()
	sq := zones.Query(zones.Field("cloudregion_id")).
		Join(hosts, sqlchemy.AND(
			sqlchemy.IsFalse(hosts.Field("deleted")),
			sqlchemy.IsTrue(hosts.Field("enabled")),
			sqlchemy.Equals(hosts.Field("zone_id"), zones.Field("id"))))
	sq = AttachUsageQuery(sq, hosts, hosts.Field("id"), hostTypes, rangeObj)
	q = q.Filter(sqlchemy.In(q.Field("cloudregion_id"), sq.Distinct()))
	return q
}

func (manager *SElasticipManager) TotalCount(projectId string, rangeObj db.IStandaloneModel, hostTypes []string) EipUsage {
	usage := EipUsage{}
	q1 := manager.Query().Equals("mode", EIP_MODE_INSTANCE_PUBLICIP)
	q1 = manager.usageQ(q1, rangeObj, hostTypes)
	q2 := manager.Query().Equals("mode", EIP_MODE_STANDALONE_EIP)
	q2 = manager.usageQ(q2, rangeObj, hostTypes)
	q3 := manager.Query().Equals("mode", EIP_MODE_STANDALONE_EIP).IsNotEmpty("associate_id")
	q3 = manager.usageQ(q3, rangeObj, hostTypes)
	if len(projectId) > 0 {
		q1 = q1.Equals("tenant_id", projectId)
		q2 = q2.Equals("tenant_id", projectId)
		q3 = q3.Equals("tenant_id", projectId)
	}
	usage.PublicIPCount = q1.Count()
	usage.EIPCount = q2.Count()
	usage.EIPUsedCount = q3.Count()
	return usage
}