// Register will handle the registration of a new name in the Zooko server.
func (c *Client) Register(name string, reg interface{}, acc *account.Account) error {
if _, found, _ := c.lookupString(name); found {
return errors.New("zooko: cannot register name that already exists")
}
jsonRegistration, err := json.Marshal(reg)
if err != nil {
return err
}
if err := c.checkAccountBalance(acc, true); err != nil {
return err
}
nameNew, rand, err := acc.CreateNameNew(name)
if err != nil {
return err
}
// Temporarily commit to the new transaction so that we can
// successfully create the name_firstupdate transaction.
oldUnspent := acc.Unspent
acc.Commit(nameNew)
undoCommit := func() {
acc.Unspent = oldUnspent
}
nameUpdate, err := acc.CreateNameFirstUpdate(rand, name, string(jsonRegistration))
if err != nil {
undoCommit()
return err
}
nameNewBytes := &bytes.Buffer{}
if err := nameNew.MsgTx.Serialize(nameNewBytes); err != nil {
undoCommit()
return err
}
nameFirstUpdateBytes := &bytes.Buffer{}
if err := nameUpdate.MsgTx.Serialize(nameFirstUpdateBytes); err != nil {
undoCommit()
return err
}
registrationMsg, err := message.CreateMessage(&message.RegisterName{
Name: &name,
Value: jsonRegistration,
NameNew: nameNewBytes.Bytes(),
NameFirstupdate: nameFirstUpdateBytes.Bytes(),
}, c.Origin, config.ServerAddress())
if err != nil {
undoCommit()
return err
}
if err := c.getRegistrationResponse(registrationMsg); err != nil {
undoCommit()
return err
}
// Add the name_firstupdate transaction to the list of pending
// transactions.
acc.Pending = append(acc.Pending, nameUpdate)
return nil
}
