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handler_register_initial.go
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/
handler_register_initial.go
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package auth
import (
"time"
"github.com/pkg/errors"
)
type RegisterInitial struct {
Username string
Password string
}
type RegisterInitialHandler struct {
passwordHasher PasswordHasher
transactionProvider TransactionProvider
}
func NewRegisterInitialHandler(
passwordHasher PasswordHasher,
transactionProvider TransactionProvider,
) *RegisterInitialHandler {
return &RegisterInitialHandler{
passwordHasher: passwordHasher,
transactionProvider: transactionProvider,
}
}
func (h *RegisterInitialHandler) Execute(cmd RegisterInitial) error {
if err := validate(cmd.Username, cmd.Password); err != nil {
return errors.Wrap(err, "invalid parameters")
}
passwordHash, err := h.passwordHasher.Hash(cmd.Password)
if err != nil {
return errors.Wrap(err, "hashing the password failed")
}
u := User{
Username: cmd.Username,
Password: passwordHash,
Administrator: true,
Created: time.Now(),
LastSeen: time.Now(),
}
if err := h.transactionProvider.Write(func(r *TransactableRepositories) error {
n, err := r.Users.Count()
if err != nil {
return errors.Wrap(err, "could not get a count")
}
if n != 0 {
return errors.New("there are existing users")
}
return r.Users.Put(u)
}); err != nil {
return errors.Wrap(err, "transaction failed")
}
return nil
}