Method prepareTransaction

src/qt/walletmodel.cpp:183–274

}

WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransaction &transaction, wallet::BlindDetails *blind_details, const CCoinControl& coinControl)
{
    CAmountMap total;
    bool fSubtractFeeFromAmount = false;
    QList<SendCoinsRecipient> recipients = transaction.getRecipients();
    std::vector<CRecipient> vecSend;

    if(recipients.empty())
    {
        return OK;
    }

    QSet<QString> setAddress; // Used to detect duplicates
    int nAddresses = 0;

    // Pre-check input data for validity
    for (const SendCoinsRecipient &rcp : recipients)
    {
        if (rcp.fSubtractFeeFromAmount)
            fSubtractFeeFromAmount = true;
        {   // User-entered bitcoin address / amount:
            if(!validateAddress(rcp.address))
            {
                return InvalidAddress;
            }
            if(rcp.asset_amount <= 0)
            {
                return InvalidAmount;
            }
            setAddress.insert(rcp.address);
            ++nAddresses;

            CTxDestination dest = DecodeDestination(rcp.address.toStdString());
            CScript scriptPubKey = GetScriptForDestination(dest);
            CPubKey confidentiality_pubkey = GetDestinationBlindingKey(dest);
            CRecipient recipient = {scriptPubKey, rcp.asset_amount, rcp.asset, confidentiality_pubkey, rcp.fSubtractFeeFromAmount};
            vecSend.push_back(recipient);

            total[rcp.asset] += rcp.asset_amount;
        }
    }
    if(setAddress.size() != nAddresses)
    {
        return DuplicateAddress;
    }

    CAmountMap nBalance = m_wallet->getAvailableBalance(coinControl);

    if(total > nBalance)
    {
        return AmountExceedsBalance;
    }

    {
        CAmount nFeeRequired = 0;
        int nChangePosRet = -1;
        bilingual_str error;