/*
 * @description: 合同相关数据库操作
 * @Author: CP
 * @Date: 2020-11-17 10:41:05
 * @FilePath: \construction_management\dao\contract_dao.go
 */
package dao

import (
	"errors"
	"log"

	"github.com/go-xorm/xorm"
	"go.mod/models"
)

//数据库操作引擎
type ContractDao struct {
	engine *xorm.Engine
}

//获得一个DAO对象
func NewContractDao(engine *xorm.Engine) *ContractDao {
	return &ContractDao{
		engine: engine,
	}
}

// 获得本项目的合同项目节
func (d *ContractDao) Get(id int) *models.CmContracts {
	data := &models.CmContracts{}
	_, err := d.engine.
		Where("id=? ", id).
		Get(data)
	if err != nil {
		data.Id = 0
		return data
	}
	return data
}

// 新增合同
func (d *ContractDao) Add(contractData *models.CmContracts) error {
	session := d.engine.NewSession()
	defer session.Close()
	err := session.Begin()
	if err != nil {
		return errors.New("新增合同出错-db")
	}
	// 1.写入合同表
	_, err = session.Insert(contractData)
	if err != nil {
		log.Println(err)
		session.Rollback()
		return errors.New("新增合同出错")
	}
	// 2.更新项目节表
	_, err = session.Exec("UPDATE  cm_tree_contracts SET `contract_id` = ?,`contract_name` = ?,`contract_code` = ?,`contract_price` = ? "+
		"where tree_id = ? and project_id = ? and bidsection_id = ? ",
		contractData.Id, contractData.Name, contractData.Code, contractData.Price,
		contractData.TreeId, contractData.ProjectId, contractData.BidsectionId)
	if err != nil {
		session.Rollback()
		return errors.New("新增合同出错-项目节更新失败")
	}
	// 3.更新标段目录金额合计
	// 3-1 获得项目-标段下合同总数
	// 3-2 获得项目标段下合同收入中金额
	_, err = session.Exec("UPDATE  cm_tree SET `contracts` = ?,`contracts_income` = ? "+
		"where project_id = ? and bidsection_id = ? ",
		contractData.Id, contractData.Name, contractData.Code, contractData.Price,
		contractData.ProjectId, contractData.BidsectionId)
	if err != nil {
		session.Rollback()
		return errors.New("新增合同出错-标段目录更新失败")
	}

	err = session.Commit()
	if err != nil {
		session.Rollback()
		return errors.New("新增合同出错-db")
	}
	return nil
}