class Lato::User

def add_web3_connection(params)
  depends_on('eth')
  signature_pubkey = Eth::Signature.personal_recover(params[:web3_nonce], params[:web3_signed_nonce])
  signature_address = Eth::Util.public_key_to_address signature_pubkey
  unless signature_address.to_s.downcase == params[:web3_address].downcase
    errors.add(:base, :web3_address_invalid)
    return
  end
  update(web3_address: params[:web3_address])
rescue StandardError => e
  errors.add(:base, :web3_connection_error)
  false
end