/*
 * @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
// contractData *models.CmContracts
// contractTotal 合同总数
// priceTotal 收入总金额
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")
	}

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

// 更新合同
func (d *ContractDao) Update(contractsCm *models.CmContracts, columns []string, projectId int, bidsectionId int, treeId int) error {
	session := d.engine.NewSession()
	defer session.Close()
	err := session.Begin()
	if err != nil {
		return errors.New("session出错-db")
	}

	// 1.更新合同表
	successNum, err := session.Id(contractsCm.Id).MustCols(columns...).Update(contractsCm)
	if err != nil {
		session.Rollback()
		return errors.New("更新失败")
	}
	if successNum == 0 {
		session.Rollback()
		return errors.New("合同数据异常,更新失败")
	}

	// 2.更新项目节表
	_, err = session.Exec("UPDATE  cm_tree_contracts SET `contract_name` = ?,`contract_price` = ? "+
		"where tree_id = ? and project_id = ? and bidsection_id = ? ",
		contractsCm.Name, contractsCm.Price,
		treeId, projectId, bidsectionId)
	if err != nil {
		session.Rollback()
		return errors.New("编辑合同出错-项目节更新失败")
	}

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

// 删除合同
func (d *ContractDao) Delete(projectId int, bidsectionId int, treeId int, id int) error {

	contractsCm := models.CmContracts{}

	session := d.engine.NewSession()
	defer session.Close()
	err := session.Begin()
	if err != nil {
		return errors.New("session出错-db")
	}
	// 1.删除合同
	successNum, err := session.Where("id = ? and tree_id=? and bidsection_id= ? and project_id=? ", id, treeId, bidsectionId, projectId).Delete(contractsCm)
	if err != nil {
		session.Rollback()
		return errors.New("删除失败")
	}
	if successNum == 0 {
		session.Rollback()
		return errors.New("合同数据异常,删除失败")
	}

	// 2.删除项目节上合同信息
	_, err = session.Exec("UPDATE  cm_tree_contracts SET `contract_name` = '',`contract_code` = '',`contract_price` = 0,`contract_id` = 0,`contract_returned` = 0,`contracts_paid` = 0,`contract_status` = 0 "+
		"where tree_id = ? and project_id = ? and bidsection_id = ? ",
		treeId, projectId, bidsectionId)
	if err != nil {
		session.Rollback()
		return errors.New("编辑合同出错-项目节更新失败")
	}

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

// 删除合同
func (d *ContractDao) Close(projectId int, bidsectionId int, treeId int, id int) error {

	session := d.engine.NewSession()
	defer session.Close()
	err := session.Begin()
	if err != nil {
		return errors.New("session出错-db")
	}

	// 1.关闭合同-关闭合同，默认锁定合同
	contractsCm := models.CmContracts{}
	contractsCm.Status = 2
	contractsCm.Locking = 1
	successNum, err := session.Where("id = ? and project_id = ? and bidsection_id = ? ", id, projectId, bidsectionId).Update(contractsCm)
	if err != nil {
		session.Rollback()
		return errors.New("关闭合同出错")
	}
	if successNum == 0 {
		session.Rollback()
		return errors.New("关闭合同异常")
	}

	// 2.更新项目节合同状态,锁定合同
	treeContractsCm := models.CmTreeContracts{}
	treeContractsCm.ContractStatus = 2
	treeContractsCm.ContractLocking = 1
	successNum, err = session.Where("tree_id = ? and project_id = ? and bidsection_id = ? ", treeId, projectId, bidsectionId).Update(treeContractsCm)
	if err != nil {
		session.Rollback()
		return errors.New("关闭合同出错-项目节")
	}
	if successNum == 0 {
		session.Rollback()
		return errors.New("关闭合同异常-项目节")
	}

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

// 删除合同
func (d *ContractDao) Unlock(projectId int, bidsectionId int, treeId int, id int) error {
	session := d.engine.NewSession()
	defer session.Close()
	err := session.Begin()
	if err != nil {
		return errors.New("session出错-db")
	}

	// 1.解锁合同
	contractsCm := models.CmContracts{}
	contractsCm.Locking = 0
	successNum, err := session.Where("id = ? and project_id = ? and bidsection_id = ? ", id, projectId, bidsectionId).Cols("locking").Update(contractsCm)
	if err != nil {
		session.Rollback()
		return errors.New("解锁合同出错")
	}
	if successNum == 0 {
		session.Rollback()
		return errors.New("解锁合同异常")
	}

	// 2.更新项目节上合同锁状态
	treeContractsCm := models.CmTreeContracts{}
	treeContractsCm.ContractLocking = 0
	successNum, err = session.Where("tree_id = ? and project_id = ? and bidsection_id = ? ", treeId, projectId, bidsectionId).Cols("contract_locking").Update(treeContractsCm)
	if err != nil {
		session.Rollback()
		return errors.New("解锁合同出错-项目节")
	}
	if successNum == 0 {
		session.Rollback()
		return errors.New("解锁合同异常-项目节")
	}

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