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/*
GoToSocial
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package gtsmodel
import (
"reflect"
"github.com/go-playground/validator/v10"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
var v *validator.Validate
const (
PointerValidationPanic = "validate function was passed pointer"
InvalidValidationPanic = "validate function was passed invalid item"
)
var ulidValidator = func(fl validator.FieldLevel) bool {
value, kind, _ := fl.ExtractType(fl.Field())
if kind != reflect.String {
return false
}
// we want either an empty string, or a proper ULID, nothing else
// if the string is empty, the `required` tag will take care of it so we don't need to worry about it here
s := value.String()
if len(s) == 0 {
return true
}
return util.ValidateULID(s)
}
func init() {
v = validator.New()
v.RegisterValidation("ulid", ulidValidator)
}
func ValidateStruct(s interface{}) error {
switch reflect.ValueOf(s).Kind() {
case reflect.Invalid:
panic(InvalidValidationPanic)
case reflect.Ptr:
panic(PointerValidationPanic)
}
err := v.Struct(s)
return processValidationError(err)
}
func processValidationError(err error) error {
if err == nil {
return nil
}
if ive, ok := err.(*validator.InvalidValidationError); ok {
panic(ive)
}
return err.(validator.ValidationErrors)
}
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