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extension.go
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extension.go
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package user
import (
"errors"
"github.com/google/uuid"
"github.com/markdicksonjr/nibbler"
)
const noExtensionErrorMessage = "no persistence extension was provided to user extension"
type PersistenceExtension interface {
nibbler.Extension
Create(user *nibbler.User) (*nibbler.User, error)
GetUserByEmail(email string) (*nibbler.User, error)
GetUserByEmailValidationToken(token string) (*nibbler.User, error)
GetUserById(id string) (*nibbler.User, error)
GetUserByPasswordResetToken(token string) (*nibbler.User, error)
GetUserByUsername(username string) (*nibbler.User, error)
Update(user *nibbler.User) error
UpdatePassword(user *nibbler.User) error
}
type Extension struct {
nibbler.Extension
PersistenceExtension PersistenceExtension
OnBeforeUserCreate func(user *nibbler.User)
OnAfterUserCreate func(user *nibbler.User)
OnBeforeUserUpdate func(user *nibbler.User)
OnAfterUserUpdate func(user *nibbler.User)
OnBeforePasswordUpdate func(user *nibbler.User)
OnAfterPasswordUpdate func(user *nibbler.User)
}
func (s *Extension) Init(app *nibbler.Application) error {
if s.PersistenceExtension == nil {
return errors.New(noExtensionErrorMessage)
}
return nil
}
func (s *Extension) PostInit(app *nibbler.Application) error {
return nil
}
func (s *Extension) Destroy(app *nibbler.Application) error {
return nil
}
func (s *Extension) GetName() string {
return "user"
}
func (s *Extension) GetUserById(id string) (*nibbler.User, error) {
if s.PersistenceExtension != nil {
return s.PersistenceExtension.GetUserById(id)
}
return nil, errors.New(noExtensionErrorMessage)
}
func (s *Extension) GetUserByEmail(email string) (*nibbler.User, error) {
if s.PersistenceExtension != nil {
return s.PersistenceExtension.GetUserByEmail(email)
}
return nil, errors.New(noExtensionErrorMessage)
}
func (s *Extension) GetUserByPasswordResetToken(token string) (*nibbler.User, error) {
if s.PersistenceExtension != nil {
return s.PersistenceExtension.GetUserByPasswordResetToken(token)
}
return nil, errors.New(noExtensionErrorMessage)
}
func (s *Extension) GetUserByEmailVerificationToken(token string) (*nibbler.User, error) {
if s.PersistenceExtension != nil {
return s.PersistenceExtension.GetUserByEmailValidationToken(token)
}
return nil, errors.New(noExtensionErrorMessage)
}
func (s *Extension) GetUserByUsername(username string) (*nibbler.User, error) {
if s.PersistenceExtension != nil {
return s.PersistenceExtension.GetUserByUsername(username)
}
return nil, errors.New(noExtensionErrorMessage)
}
func (s *Extension) Create(user *nibbler.User) (*nibbler.User, error) {
if s.PersistenceExtension != nil {
user.ID = uuid.New().String()
// call the OnBeforeUserCreate callback if provided
if s.OnBeforeUserCreate != nil {
s.OnBeforeUserCreate(user)
}
// save the new user to the DB
resultUser, err := s.PersistenceExtension.Create(user)
// if an error occurred, return now
if err != nil {
return resultUser, err
}
// call the OnAfterUserCreate callback if provided
if s.OnAfterUserCreate != nil {
s.OnAfterUserCreate(resultUser)
}
return resultUser, err
}
return user, errors.New(noExtensionErrorMessage)
}
func (s *Extension) Update(user *nibbler.User) error {
if s.PersistenceExtension != nil {
// call the OnBeforeUserUpdate callback if provided
if s.OnBeforeUserUpdate != nil {
s.OnBeforeUserUpdate(user)
}
// change user user in the DB
if err := s.PersistenceExtension.Update(user); err != nil {
return err
}
// call the OnAfterUserUpdate callback if provided
if s.OnAfterUserUpdate != nil {
s.OnAfterUserUpdate(user)
}
return nil
}
return errors.New(noExtensionErrorMessage)
}
func (s *Extension) UpdatePassword(user *nibbler.User) error {
if s.PersistenceExtension != nil {
// call the OnBeforePasswordUpdate callback if provided
if s.OnBeforePasswordUpdate != nil {
s.OnBeforePasswordUpdate(user)
}
// change user user in the DB
if err := s.PersistenceExtension.UpdatePassword(user); err != nil {
return err
}
// call the OnAfterUserUpdate callback if provided
if s.OnAfterPasswordUpdate != nil {
s.OnAfterPasswordUpdate(user)
}
return nil
}
return errors.New(noExtensionErrorMessage)
}