package biapprove

import (
	"eta_gn/eta_api/global"
	"fmt"
	"time"
)

type BiApproveFlow struct {
	BiApproveFlowId int       `gorm:"column:bi_approve_flow_id;primaryKey"`
	FlowName        string    `gorm:"column:flow_name"`
	ClassifyId      int       `gorm:"column:classify_id"`
	ClassifyName    string    `gorm:"column:classify_name"`
	CurrVersion     int       `gorm:"column:curr_version"`
	CreateTime      time.Time `gorm:"column:create_time"`
	ModifyTime      time.Time `gorm:"column:modify_time"`
}

func (b *BiApproveFlow) TableName() string {
	return "bi_approve_flow"
}

func (b *BiApproveFlow) Add(node []*BiApproveNode) (err error) {
	prevNodes := make([]*BiApproveNode, 0)
	o := global.DmSQL["rddp"].Begin()
	defer func() {
		if err != nil {
			o.Rollback()
		} else {
			o.Commit()
		}

		// 更新每个节点的下一个节点信息, 放在事务中会更新失败
		if e := UpdateNextNodes(prevNodes); e != nil {
			err = fmt.Errorf("UpdatePrevNodes err: %s", e.Error())
			return
		}
	}()

	err = o.Create(b).Error
	if err != nil {
		err = fmt.Errorf("insert approve err: %v", err)
		return
	}

	nodesLen := len(node)
	if nodesLen == 0 {
		return
	}
	prevId := 0
	prevNode := new(BiApproveNode)
	for k, v := range node {
		v.BiApproveFlowId = b.BiApproveFlowId
		v.PrevNodeId = prevId
		err = o.Create(v).Error
		if err != nil {
			err = fmt.Errorf("insert node err: %v", err)
			return
		}
		prevId = v.BiApproveNodeId

		// 下一个节点
		if prevNode != nil && k > 0 && k < nodesLen {
			prevNode.NextNodeId = v.BiApproveNodeId
			prevNodes = append(prevNodes, prevNode)
		}
		prevNode = v
	}
	return
}

func (b *BiApproveFlow) Update(cols []string, node []*BiApproveNode) (err error) {
	prevNodes := make([]*BiApproveNode, 0)
	o := global.DmSQL["rddp"].Begin()
	defer func() {
		if err != nil {
			o.Rollback()
		} else {
			o.Commit()
		}

		// 更新每个节点的下一个节点信息, 放在事务中会更新失败
		if e := UpdateNextNodes(prevNodes); e != nil {
			err = fmt.Errorf("UpdatePrevNodes err: %s", e.Error())
			return
		}
	}()
	err = o.Model(b).Select(cols).Updates(b).Error
	if err != nil {
		return
	}

	nodesLen := len(node)
	if nodesLen == 0 {
		return
	}
	prevId := 0
	prevNode := new(BiApproveNode)
	for k, v := range node {
		v.BiApproveFlowId = b.BiApproveFlowId
		v.PrevNodeId = prevId
		err = o.Create(v).Error
		if err != nil {
			err = fmt.Errorf("insert node err: %v", err)
			return
		}
		prevId = v.BiApproveNodeId

		// 下一个节点
		if prevNode != nil && k > 0 && k < nodesLen {
			prevNode.NextNodeId = v.BiApproveNodeId
			prevNodes = append(prevNodes, prevNode)
		}
		prevNode = v
	}
	return
}

func (b *BiApproveFlow) Delete() error {
	return global.DmSQL["rddp"].Delete(b).Error
}

func GetBiApproveFlowById(biApproveFlowId int) (item *BiApproveFlow, err error) {
	err = global.DmSQL["rddp"].Where("bi_approve_flow_id = ?", biApproveFlowId).First(&item).Error
	return
}

func GetBiApproveFlowByCondition(condition string, pars []interface{}, startSize, pageSize int) (items []*BiApproveFlow, err error) {
	o := global.DmSQL["rddp"]
	sql := "SELECT * FROM bi_approve_flow WHERE 1=1 "
	if condition != "" {
		sql += condition
	}
	sql += " LIMIT ?,?"
	pars = append(pars, startSize, pageSize)
	err = o.Raw(sql, pars...).Scan(&items).Error
	return
}

func GetBiApproveFlowCountByCondition(condition string, pars []interface{}) (count int, err error) {
	o := global.DmSQL["rddp"]
	sql := "SELECT COUNT(*) AS count FROM bi_approve_flow WHERE 1=1 "
	if condition != "" {
		sql += condition
	}
	err = o.Raw(sql, pars...).Scan(&count).Error
	return
}