package repositories

import (
	"fmt"
	"time"
	"xorm.io/xorm"
	"xps/datamodels"
	"xps/viewmodels"
)

type OcRepo struct {
	engine *xorm.Engine
}

func NewOcRepo(engine *xorm.Engine) *OcRepo {
	return &OcRepo{
		engine: engine,
	}
}

func (d *OcRepo) GetById(ocId int64) (*viewmodels.OcInfo, error) {
	sqlSelect := ` SELECT  A.oc_id,
							A.oc_name,
							A.oc_type_id,
							A.root_id,
							A.parent_id,
							A.admin_id,
							B.account_name AS admin_name,
							A.group_id,
							A.node_left,
							A.node_right,
							A.node_level,
							A.is_leaf,
							A.status,
							A.if_lic    `
	sqlFrom  := ` FROM      oc       AS A
                  LEFT JOIN account  AS B ON(A.admin_id = B.account_id) `
	sqlWhere := ` WHERE A.deleted_flag = 0  AND A.oc_id = ` + fmt.Sprintf("%d", ocId)
	
	data := &viewmodels.OcInfo{}
	has, err := d.engine.SQL(sqlSelect + sqlFrom + sqlWhere).Get(data)

	if !has || err != nil {
		return nil, err
	} else {
		return data, nil
	}
}

func (d *OcRepo) GetPage(m map[string]interface{})(*viewmodels.PageResult, error) {
	limit     := m["limit"].(int)
	page      := m["page"].(int)
	
	sqlSelect := ` SELECT  A.oc_id,
							A.oc_name,
							A.oc_type_id,
							A.root_id,
							A.parent_id,
							A.admin_id,
							B.account_name AS admin_name,
							A.group_id,
							A.node_left,
							A.node_right,
							A.node_level,
							A.is_leaf,
							A.status,
							A.if_lic   `
	sqlFrom  := ` FROM      oc       AS A
                  LEFT JOIN account  AS B ON(A.oc_admin_id = B.account_id) `
	sqlWhere := ` WHERE A.deleted_flag = 0 `

	if keywords, ok := m["keywords"]; ok {
		sqlWhere += ` AND A.oc_name like ` + "'%" + fmt.Sprintf("%s", keywords) + "%'"
	}

	sqlCount := ` SELECT COUNT(*)  `
	total, err1 := d.engine.SQL(sqlCount + sqlFrom + sqlWhere).Count()
	if err1 != nil {
		return nil, err1
	}

	pageStart  := (page - 1) * limit
	sqlOrderBy := " ORDER BY oc_id ASC "
	sqlLimit   := fmt.Sprintf(" LIMIT %d OFFSET %d  ", limit, pageStart)
	
	datalist := make([]viewmodels.OcInfo, 0)
	err2 := d.engine.SQL(sqlSelect + sqlFrom + sqlWhere + sqlOrderBy + sqlLimit).Find(&datalist)
	if err2 != nil {
		return nil, err2
	}
	
	pageResult := &viewmodels.PageResult{}
	pageResult.Data     = datalist
	pageResult.Total    = total
	pageResult.PageSize = limit
	pageResult.Page     = page
	return pageResult, nil
}

func (d *OcRepo) GetList(m map[string]interface{})([]viewmodels.OcInfo, error) {
	sqlSelect := `  SELECT  A.oc_id,
							A.oc_name,
							A.oc_type_id,
							A.root_id,
							A.parent_id,
							A.admin_id,
							B.account_name AS admin_name,
							A.group_id,
							A.node_left,
							A.node_right,
							A.node_level,
							A.is_leaf,
							A.status,
							A.if_lic
                  `
	sqlFrom  := ` FROM      oc       AS A
                  LEFT JOIN account  AS B ON(A.oc_admin_id = B.account_id) `
	sqlWhere := ` WHERE A.deleted_flag = 0 `
	
	if keywords, ok := m["keywords"]; ok {
		sqlWhere += ` AND   A.oc_name like ` + "'%" + fmt.Sprintf("%s", keywords) + "%'"
	}
	sqlOrderBy := " ORDER BY oc_id ASC "
	
	datalist := make([]viewmodels.OcInfo, 0)
	err := d.engine.SQL(sqlSelect + sqlFrom + sqlWhere + sqlOrderBy).Find(&datalist)
	if err != nil {
		return nil, err
	} else {
		return datalist, nil
	}
}

func (d *OcRepo) Delete(m map[string]interface{}) error {
	ocId := m["ocId"].(int64)
	data := &datamodels.Oc{DeletedFlag: 1}
	_, err := d.engine.Where("oc_id = ?", ocId).Update(data)
	return err
}

func (d *OcRepo) Update(data *datamodels.Oc) error {
	ocId := data.OcId
	data.UpdatedAt = time.Now()
	_, err := d.engine.Where("oc_id = ?", ocId).Update(data)
	return err
}

func (d *OcRepo) Create(data *datamodels.Oc) error {
	_, err := d.engine.Insert(data)
	return err
}

func (d *OcRepo) IncrementLeft(iRoot, steps, iLeft int64) error {
	sql := fmt.Sprintf("UPDATE oc SET node_left = node_left + %d  WHERE root_id = %d AND node_left >= %d AND deleted_flag = 0", iRoot, steps, iLeft)
	_, err := d.engine.Exec(sql)
	return err
}

func (d *OcRepo) IncrementRight(iRoot, steps, iRight int64) error {
	sql := fmt.Sprintf("UPDATE oc SET node_right = node_right + %d WHERE root_id = %d AND node_right >= %d AND deleted_flag = 0", iRoot, steps, iRight)
	_, err := d.engine.Exec(sql)
	return err
}

func (d *OcRepo) DecrementLeft(iRoot, steps, iLeft int64) error {
	sql := fmt.Sprintf("UPDATE oc SET node_left = node_left - %d  WHERE root_id = %d AND node_left > %d AND deleted_flag = 0", iRoot, steps, iLeft)
	_, err := d.engine.Exec(sql)
	return err
}

func (d *OcRepo) DecrementRight(iRoot, steps int64, iRight int64) error {
	sql := fmt.Sprintf("UPDATE oc SET node_right = node_right - %d WHERE root_id = %d AND node_right > %d AND deleted_flag = 0", iRoot, steps, iRight)
	_, err := d.engine.Exec(sql)
	return err
}

func (d *OcRepo) BatchDelete(iRootId, iLeft, iRight int64) error {
	sql := fmt.Sprintf("DELETE FROM oc WHERE root_id = %d AND node_left >= %d AND node_right <= %d ", iRootId, iLeft, iRight)
	_, err := d.engine.Exec(sql)
	return err
}

func (d *OcRepo) CountOfChildren(iRoot, iid int64) (int64, error) {
	count, err := d.engine.
		Where("root_id", iRoot).
		Where("parent_id = ?", iid).
		Where("deleted_flag = 0 ").
		Count(new(datamodels.Oc))

	if err != nil {
		return 0, err
	}

	return count, nil
}

func (d *OcRepo) GetAdmin(ocId int64)(*datamodels.Account, error) {
	sqlSelect := ` SELECT A.*       ,
                          B.*            `
	sqlFrom   := ` FROM       oc           AS A
                   LEFT  JOIN account      AS B ON(A.oc_id = B.oc_id AND A.admin_id = B.account_id) `
	sqlWhere  := ` WHERE A.deleted_flag = 0  AND A.oc_id = ` + fmt.Sprintf("%d", ocId)
	
	data := &datamodels.Account{}
	has, err := d.engine.SQL(sqlSelect + sqlFrom + sqlWhere).Get(data)

	if !has || err != nil {
		return nil, err
	} else {
		return data, nil
	}
}