package system

import (
	"errors"
	"gorm.io/gorm"
	"server/global"
	"server/model/common/request"
	"server/model/system"
)

type DeptService struct{}

// 获取部门列表
func (appDeptService *DeptService) GetAppRootDept(info request.PageInfo) (list interface{}, total int64, err error) {
	limit := info.PageSize
	offset := info.PageSize * (info.Page - 1)
	db := global.GVA_DB.Model(&system.Dept{})
	var rootDept []system.Dept
	err = db.
		Where("parent_id = ?", 0).
		Where("is_deleted", 0).Count(&total).Error
	if err != nil {
		return
	}
	db.Limit(limit).Offset(offset).
		Where("is_deleted", 0).
		Where("parent_id = ?", 0).Find(&rootDept)

	for i, dept := range rootDept {
		var childDepts []system.Dept
		global.GVA_DB.Table("dept").Select("*").
			Where("is_deleted", 0).Where("parent_id = ?", dept.ID).Scan(&childDepts)
		rootDept[i].Children = childDepts
	}
	return rootDept, total, err
}

func (appDeptService *DeptService) Establish(d system.Dept) (err error) {
	err = global.GVA_DB.Create(&d).Error
	return err
}

// 设置部门信息
func (appDeptService *DeptService) SetDeptInfo(req system.Dept) error {
	return global.GVA_DB.Model(&system.Dept{}).
		Select("dept_name", "parent_id", "remark", "responsible", "phone").
		Where("id=?", req.ID).
		Updates(map[string]interface{}{
			"dept_name":   req.DeptName,
			"parent_id":   req.ParentId,
			"remark":      req.Remark,
			"responsible": req.Responsible,
			"phone":       req.Phone,
		}).Error
}

// 删除部门
func (DeptService *DeptService) DeleteDept(id int) error {
	var users []system.SysUser
	if !errors.Is(global.GVA_DB.Model(&system.SysUser{}).Debug().Where("dept_id = ?", id).First(&users).Error, gorm.ErrRecordNotFound) { // 判断部门下是否存在用户
		return errors.New("该部门存在用户，删除失败！")
	}
	err := global.GVA_DB.Model(&system.Dept{}).
		Where("id=?", id).
		Updates(map[string]interface{}{"is_deleted": "1"}).Error
	return err
}

func (DeptService *DeptService) GetChildDepts() (depts []system.Dept, err error) {
	err = global.GVA_DB.Model(&system.Dept{}).Where("parent_id != ? and is_deleted = 0", 0).Find(&depts).Error
	return depts, err
}

func (DeptService *DeptService) GetAllUsers() (users []system.SysUser, err error) {
	err = global.GVA_DB.Model(&system.SysUser{}).Find(&users).Error
	return users, err
}

func (DeptService *DeptService) GetDeptsUsers(depts []int) (users []system.SysUser, err error) {
	err = global.GVA_DB.Model(&system.SysUser{}).Where("dept_id IN (?)", depts).Find(&users).Error
	return users, err
}