Transaction Scripts

// A small variant of the peer-peer payment example that creates a fresh
// account if one does not already exist.

import 0x0.LibraAccount;
import 0x0.LibraCoin;
main(payee: address, amount: u64) {
  let coin: R#LibraCoin.T;
  let account_exists: bool;

  // Acquire a LibraCoin.T resource with value `amount` from the sender's
  // account.  This will fail if the sender's balance is less than `amount`.
  coin = LibraAccount.withdraw_from_sender(move(amount));

  account_exists = LibraAccount.exists(copy(payee));

  if (!move(account_exists)) {
    // Creates a fresh account at the address `payee` by publishing a
    // LibraAccount.T resource under this address. If theres is already a
    // LibraAccount.T resource under the address, this will fail.
    create_account(copy(payee));
  }

  LibraAccount.deposit(move(payee), move(coin));
  return;
}