package models

import (
	"errors"
	"github.com/TeaOSLab/EdgeAPI/internal/db/models/dns"
	"github.com/TeaOSLab/EdgeCommon/pkg/configutils"
	"github.com/TeaOSLab/EdgeCommon/pkg/nodeconfigs"
	_ "github.com/go-sql-driver/mysql"
	"github.com/iwind/TeaGo/Tea"
	"github.com/iwind/TeaGo/dbs"
	"github.com/iwind/TeaGo/types"
)

const (
	NodeIPAddressStateEnabled  = 1 // 已启用
	NodeIPAddressStateDisabled = 0 // 已禁用
)

type NodeIPAddressDAO dbs.DAO

func NewNodeIPAddressDAO() *NodeIPAddressDAO {
	return dbs.NewDAO(&NodeIPAddressDAO{
		DAOObject: dbs.DAOObject{
			DB:     Tea.Env,
			Table:  "edgeNodeIPAddresses",
			Model:  new(NodeIPAddress),
			PkName: "id",
		},
	}).(*NodeIPAddressDAO)
}

var SharedNodeIPAddressDAO *NodeIPAddressDAO

func init() {
	dbs.OnReady(func() {
		SharedNodeIPAddressDAO = NewNodeIPAddressDAO()
	})
}

// EnableAddress 启用条目
func (this *NodeIPAddressDAO) EnableAddress(tx *dbs.Tx, addressId int64) (err error) {
	_, err = this.Query(tx).
		Pk(addressId).
		Set("state", NodeIPAddressStateEnabled).
		Update()
	if err != nil {
		return err
	}
	return this.NotifyUpdate(tx, addressId)
}

// DisableAddress 禁用IP地址
func (this *NodeIPAddressDAO) DisableAddress(tx *dbs.Tx, addressId int64) (err error) {
	_, err = this.Query(tx).
		Pk(addressId).
		Set("state", NodeIPAddressStateDisabled).
		Update()
	if err != nil {
		return err
	}
	return this.NotifyUpdate(tx, addressId)
}

// DisableAllAddressesWithNodeId 禁用节点的所有的IP地址
func (this *NodeIPAddressDAO) DisableAllAddressesWithNodeId(tx *dbs.Tx, nodeId int64, role nodeconfigs.NodeRole) error {
	if nodeId <= 0 {
		return errors.New("invalid nodeId")
	}
	if len(role) == 0 {
		role = nodeconfigs.NodeRoleNode
	}
	_, err := this.Query(tx).
		Attr("nodeId", nodeId).
		Attr("role", role).
		Set("state", NodeIPAddressStateDisabled).
		Update()
	if err != nil {
		return err
	}

	return SharedNodeDAO.NotifyDNSUpdate(tx, nodeId)
}

// FindEnabledAddress 查找启用中的IP地址
func (this *NodeIPAddressDAO) FindEnabledAddress(tx *dbs.Tx, id int64) (*NodeIPAddress, error) {
	result, err := this.Query(tx).
		Pk(id).
		Attr("state", NodeIPAddressStateEnabled).
		Find()
	if result == nil {
		return nil, err
	}
	return result.(*NodeIPAddress), err
}

// FindAddressName 根据主键查找名称
func (this *NodeIPAddressDAO) FindAddressName(tx *dbs.Tx, id int64) (string, error) {
	return this.Query(tx).
		Pk(id).
		Result("name").
		FindStringCol("")
}

// CreateAddress 创建IP地址
func (this *NodeIPAddressDAO) CreateAddress(tx *dbs.Tx, adminId int64, nodeId int64, role nodeconfigs.NodeRole, name string, ip string, canAccess bool, thresholdsJSON []byte) (addressId int64, err error) {
	if len(role) == 0 {
		role = nodeconfigs.NodeRoleNode
	}

	op := NewNodeIPAddressOperator()
	op.NodeId = nodeId
	op.Role = role
	op.Name = name
	op.Ip = ip
	op.CanAccess = canAccess

	if len(thresholdsJSON) > 0 {
		op.Thresholds = thresholdsJSON
	} else {
		op.Thresholds = "[]"
	}

	op.State = NodeIPAddressStateEnabled
	addressId, err = this.SaveInt64(tx, op)
	if err != nil {
		return 0, err
	}

	err = SharedNodeDAO.NotifyDNSUpdate(tx, nodeId)
	if err != nil {
		return 0, err
	}

	// 创建日志
	err = SharedNodeIPAddressLogDAO.CreateLog(tx, adminId, addressId, "创建IP")
	if err != nil {
		return 0, err
	}

	return addressId, nil
}

// UpdateAddress 修改IP地址
func (this *NodeIPAddressDAO) UpdateAddress(tx *dbs.Tx, adminId int64, addressId int64, name string, ip string, canAccess bool, isOn bool, thresholdsJSON []byte) (err error) {
	if addressId <= 0 {
		return errors.New("invalid addressId")
	}

	op := NewNodeIPAddressOperator()
	op.Id = addressId
	op.Name = name
	op.Ip = ip
	op.CanAccess = canAccess
	op.IsOn = isOn

	if len(thresholdsJSON) > 0 {
		op.Thresholds = thresholdsJSON
	} else {
		op.Thresholds = "[]"
	}

	op.State = NodeIPAddressStateEnabled // 恢复状态
	err = this.Save(tx, op)
	if err != nil {
		return err
	}

	// 创建日志
	err = SharedNodeIPAddressLogDAO.CreateLog(tx, adminId, addressId, "修改IP")
	if err != nil {
		return err
	}

	return this.NotifyUpdate(tx, addressId)
}

// UpdateAddressIP 修改IP地址中的IP
func (this *NodeIPAddressDAO) UpdateAddressIP(tx *dbs.Tx, addressId int64, ip string) error {
	if addressId <= 0 {
		return errors.New("invalid addressId")
	}
	op := NewNodeIPAddressOperator()
	op.Id = addressId
	op.Ip = ip
	err := this.Save(tx, op)
	if err != nil {
		return err
	}

	return this.NotifyUpdate(tx, addressId)
}

// UpdateAddressNodeId 修改IP地址所属节点
func (this *NodeIPAddressDAO) UpdateAddressNodeId(tx *dbs.Tx, addressId int64, nodeId int64) error {
	_, err := this.Query(tx).
		Pk(addressId).
		Set("nodeId", nodeId).
		Set("state", NodeIPAddressStateEnabled). // 恢复状态
		Update()
	if err != nil {
		return err
	}

	err = SharedNodeDAO.NotifyDNSUpdate(tx, nodeId)
	if err != nil {
		return err
	}
	return nil
}

// FindAllEnabledAddressesWithNode 查找节点的所有的IP地址
func (this *NodeIPAddressDAO) FindAllEnabledAddressesWithNode(tx *dbs.Tx, nodeId int64, role nodeconfigs.NodeRole) (result []*NodeIPAddress, err error) {
	if len(role) == 0 {
		role = nodeconfigs.NodeRoleNode
	}
	_, err = this.Query(tx).
		Attr("nodeId", nodeId).
		Attr("role", role).
		State(NodeIPAddressStateEnabled).
		Desc("order").
		AscPk().
		Slice(&result).
		FindAll()
	return
}

// FindFirstNodeAccessIPAddress 查找节点的第一个可访问的IP地址
func (this *NodeIPAddressDAO) FindFirstNodeAccessIPAddress(tx *dbs.Tx, nodeId int64, role nodeconfigs.NodeRole) (string, error) {
	if len(role) == 0 {
		role = nodeconfigs.NodeRoleNode
	}
	return this.Query(tx).
		Attr("nodeId", nodeId).
		Attr("role", role).
		State(NodeIPAddressStateEnabled).
		Attr("canAccess", true).
		Desc("order").
		AscPk().
		Result("ip").
		FindStringCol("")
}

// FindFirstNodeAccessIPAddressId 查找节点的第一个可访问的IP地址ID
func (this *NodeIPAddressDAO) FindFirstNodeAccessIPAddressId(tx *dbs.Tx, nodeId int64, role nodeconfigs.NodeRole) (int64, error) {
	if len(role) == 0 {
		role = nodeconfigs.NodeRoleNode
	}
	return this.Query(tx).
		Attr("nodeId", nodeId).
		Attr("role", role).
		State(NodeIPAddressStateEnabled).
		Attr("canAccess", true).
		Desc("order").
		AscPk().
		Result("id").
		FindInt64Col(0)
}

// FindNodeAccessAndUpIPAddresses 查找节点所有的可访问的IP地址
func (this *NodeIPAddressDAO) FindNodeAccessAndUpIPAddresses(tx *dbs.Tx, nodeId int64, role nodeconfigs.NodeRole) (result []*NodeIPAddress, err error) {
	if len(role) == 0 {
		role = nodeconfigs.NodeRoleNode
	}
	_, err = this.Query(tx).
		Attr("role", role).
		Attr("nodeId", nodeId).
		State(NodeIPAddressStateEnabled).
		Attr("canAccess", true).
		Attr("isOn", true).
		Attr("isUp", true).
		Desc("order").
		AscPk().
		Slice(&result).
		FindAll()
	return
}

// CountAllEnabledIPAddresses 计算IP地址数量
// TODO 目前支持边缘节点，将来支持NS节点
func (this *NodeIPAddressDAO) CountAllEnabledIPAddresses(tx *dbs.Tx, role string, nodeClusterId int64, upState configutils.BoolState, keyword string) (int64, error) {
	var query = this.Query(tx).
		State(NodeIPAddressStateEnabled).
		Attr("role", role)

	// 集群
	if nodeClusterId > 0 {
		query.Where("nodeId IN (SELECT id FROM "+SharedNodeDAO.Table+" WHERE (clusterId=:clusterId OR JSON_CONTAINS(secondaryClusterIds, :clusterIdString)) AND state=1)").
			Param("clusterId", nodeClusterId).
			Param("clusterIdString", types.String(nodeClusterId))
	} else {
		query.Where("nodeId IN (SELECT id FROM " + SharedNodeDAO.Table + " WHERE state=1 AND clusterId IN (SELECT id FROM " + SharedNodeClusterDAO.Table + " WHERE state=1))")
	}

	// 在线状态
	switch upState {
	case configutils.BoolStateYes:
		query.Attr("isUp", 1)
	case configutils.BoolStateNo:
		query.Attr("isUp", 0)
	}

	// 关键词
	if len(keyword) > 0 {
		query.Where("(ip LIKE :keyword OR name LIKE :keyword OR description LIKE :keyword OR nodeId IN (SELECT id FROM "+SharedNodeDAO.Table+" WHERE state=1 AND name LIKE :keyword))").
			Param("keyword", "%"+keyword+"%")
	}

	return query.Count()
}

// ListEnabledIPAddresses 列出单页的IP地址
func (this *NodeIPAddressDAO) ListEnabledIPAddresses(tx *dbs.Tx, role string, nodeClusterId int64, upState configutils.BoolState, keyword string, offset int64, size int64) (result []*NodeIPAddress, err error) {
	var query = this.Query(tx).
		State(NodeIPAddressStateEnabled).
		Attr("role", role)

	// 集群
	if nodeClusterId > 0 {
		query.Where("nodeId IN (SELECT id FROM "+SharedNodeDAO.Table+" WHERE (clusterId=:clusterId OR JSON_CONTAINS(secondaryClusterIds, :clusterIdString)) AND state=1)").
			Param("clusterId", nodeClusterId).
			Param("clusterIdString", types.String(nodeClusterId))
	} else {
		query.Where("nodeId IN (SELECT id FROM " + SharedNodeDAO.Table + " WHERE state=1 AND clusterId IN (SELECT id FROM " + SharedNodeClusterDAO.Table + " WHERE state=1))")
	}

	// 在线状态
	switch upState {
	case configutils.BoolStateYes:
		query.Attr("isUp", 1)
	case configutils.BoolStateNo:
		query.Attr("isUp", 0)
	}

	// 关键词
	if len(keyword) > 0 {
		query.Where("(ip LIKE :keyword OR name LIKE :keyword OR description LIKE :keyword OR nodeId IN (SELECT id FROM "+SharedNodeDAO.Table+" WHERE state=1 AND name LIKE :keyword))").
			Param("keyword", "%"+keyword+"%")
	}

	_, err = query.Offset(offset).
		Limit(size).
		Asc("isUp").
		Desc("nodeId").
		Slice(&result).
		FindAll()
	return
}

// NotifyUpdate 通知更新
func (this *NodeIPAddressDAO) NotifyUpdate(tx *dbs.Tx, addressId int64) error {
	address, err := this.Query(tx).
		Pk(addressId).
		Result("nodeId", "role").
		Find()
	if err != nil {
		return err
	}
	if address == nil {
		return nil
	}
	var nodeId = int64(address.(*NodeIPAddress).NodeId)
	if nodeId == 0 {
		return nil
	}
	var role = address.(*NodeIPAddress).Role
	switch role {
	case nodeconfigs.NodeRoleNode:
		err = dns.SharedDNSTaskDAO.CreateNodeTask(tx, nodeId, dns.DNSTaskTypeNodeChange)
	}
	if err != nil {
		return err
	}
	return nil
}