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/* openbills - Server for web based Libre Billing Software
* Copyright (C) 2023 Vidhu Kant Sharma <vidhukant@vidhukant.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package item
import (
"strconv"
"strings"
"vidhukant.com/openbills/errors"
)
func (b *Brand) validate() error {
// trim whitespaces
b.Name = strings.TrimSpace(b.Name)
if b.Name == "" {
return errors.ErrEmptyBrandName
}
// make sure GSTIN is unique
var count int64
err := db.Model(&Brand{}).
Select("name").
Where("name = ? and user_id = ?", b.Name, b.UserID).
Count(&count).
Error
if err != nil {
return err
}
if count > 0 {
return errors.ErrNonUniqueBrandName
}
return nil
}
func (i *SavedItem) validate() error {
// trim whitespaces
i.Name = strings.TrimSpace(i.Name)
i.Description = strings.TrimSpace(i.Description)
i.HSN = strings.TrimSpace(i.HSN)
var err error
// check if UnitPrice is float
_, err = strconv.ParseFloat(i.UnitPrice, 64)
if err != nil && strings.TrimSpace(i.UnitPrice) != "" {
return errors.ErrInvalidUnitPrice
}
// check if GSTPercentage is float
_, err = strconv.ParseFloat(i.GSTPercentage, 64)
if err != nil && strings.TrimSpace(i.GSTPercentage) != "" {
return errors.ErrInvalidGSTPercentage
}
// check if item with same name and brand already exists
var count int64
err = db.Model(&SavedItem{}).
Select("name, brand_id").
Where("brand_id = ? and name = ? and user_id = ?", i.BrandID, i.Name, i.UserID).
Count(&count).
Error
if err != nil {
return err
}
if count != 0 {
return errors.ErrNonUniqueBrandItem
}
return nil
}
func checkBrandOwnership(brandId, userId uint) error {
var brand Brand
err := db.
Select("id", "user_id").
Where("id = ?", brandId).
Find(&brand).
Error
// TODO: handle potential errors
if err != nil {
return err
}
// brand doesn't exist
if brand.ID == 0 {
return errors.ErrBrandNotFound
}
// user doesn't own this brand
if brand.UserID != userId {
return errors.ErrForbidden
}
return nil
}
func checkItemOwnership(itemId, userId uint) error {
var item SavedItem
err := db.
Select("id", "user_id").
Where("id = ?", itemId).
Find(&item).
Error
// TODO: handle potential errors
if err != nil {
return err
}
// item doesn't exist
if item.ID == 0 {
return errors.ErrNotFound
}
// user doesn't own this item
if item.UserID != userId {
return errors.ErrForbidden
}
return nil
}
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