bitstamped.getTicker(paidTime, function(err, docs) {
if (!err && docs.rows && docs.rows.length > 0) {
var tickerData = docs.rows[0].value;
var rate = new BigNumber(tickerData.vwap);
var totalPaid = new BigNumber(invoiceHelper.getTotalPaid(invoice, paymentsArr));
var remainingBalance = new BigNumber(invoice.balance_due).minus(totalPaid);
var isUSD = invoice.currency.toUpperCase() === 'USD';
if (isUSD) {
var actualPaid = helper.roundToDecimal(rate.times(transaction.amount).valueOf(), 2);
var closeEnough = new BigNumber(actualPaid).equals(helper.roundToDecimal(remainingBalance, 2));
if (closeEnough) {
remainingBalance = transaction.amount;
}
else {
remainingBalance = Number(remainingBalance.dividedBy(rate).valueOf());
}
}
remainingBalance = helper.roundToDecimal(remainingBalance, 8);
var payment = {
_id: invoiceId + '_' + transaction.txid,
invoice_id: invoiceId,
address: transaction.address,
amount_paid: Number(transaction.amount),
expected_amount: Number(remainingBalance),
block_hash: transaction.blockhash ? transaction.blockhash : null,
spot_rate: Number(rate.valueOf()), // Exchange rate at time of payment
created: new Date().getTime(),
paid_timestamp: paidTime,
txid: transaction.txid, // Bitcoind txid for transaction
watched: true,
type: 'payment'
};
payment.status = helper.getPaymentStatus(payment, transaction.confirmations, invoice);
// New transaction to known address has wallet conflicts. This indicates that
// this transaction is a mutated tx of a known payment.
if (transaction.walletconflicts.length > 0) {
payment.double_spent_history = transaction.walletconflicts;
var latestConflictingTx = transaction.walletconflicts[transaction.walletconflicts.length - 1];
// Need to grab spot rate and expected_amount from conflicting payment
paymentsArr.forEach(function(curPayment) {
if (curPayment.txid === latestConflictingTx) {
payment.expected_amount = curPayment.expected_amount;
payment.spot_rate = curPayment.spot_rate;
}
});
}
db.insert(payment, function(err) {
if (err && err.error === 'conflict' ) {
console.log('createNewPaymentWithTransaction: Document update conflict: ' + require('util').inspect(err.request.body));
return cb();
}
});
}
else {
return cb(err);
}
});
db.findInvoiceAndPayments(invoiceId, function(err, invoice, paymentsArr) {
if (err) {
return cb(err, null);
}
var origInvoice = _.cloneDeep(invoice);
var paymentHistory = invoicesLib.getPaymentHistory(paymentsArr);
invoice.payment_history = paymentHistory;
var isUSD = invoice.currency.toUpperCase() === 'USD';
invoicesLib.calculateLineTotals(invoice);
invoicesLib.calculateDiscountTotals(invoice);
if (!invoice.discounts) {
invoice.discounts = [];
}
invoice.amount_paid = invoicesLib.getTotalPaid(invoice, paymentsArr);
invoice.balance_due = invoicesLib.getAmountDue(invoice.invoice_total, invoice.amount_paid, invoice.currency);
invoice.is_expired = false;
invoice.is_void = invoice.is_void ? invoice.is_void : false;
invoice.expiration = invoice.expiration ? invoice.expiration : null;
invoice.text = invoice.text ? invoice.text : null;
var invoiceExpired = validate.invoiceExpired(invoice);
invoice.is_expired = invoiceExpired && invoice.balance_due > 0;
invoice.expiration_time = null;
if (invoice.expiration && !invoiceExpired && invoice.balance_due > 0) {
invoice.expiration_time = helper.getExpirationCountDown(invoice.expiration);
}
// Is the invoice paid in full?
var hasPending = false;
paymentHistory.forEach(function(payment) {
if(isUSD) {
var amountUSD = new BigNumber(payment.amount_paid).times(payment.spot_rate);
amountUSD = helper.roundToDecimal(amountUSD, 2);
payment.amount_usd = amountUSD;
}
payment.url = config.publicURL + '/redirect/txid/' + payment.txid; // populate chain explorer url
hasPending = payment.status.toLowerCase() === 'pending';
delete payment._id;
delete payment._rev;
delete payment.spot_rate;
});
invoice.payment_history = _.sortBy(paymentHistory, function(payment) {
return payment.created;
});
invoice.is_paid = !hasPending && invoice.balance_due <= 0;
invoice.is_overpaid = !hasPending && invoice.balance_due < 0;
delete invoice.webhooks;
delete invoice.metadata;
delete invoice._rev;
invoice.demo_mode = config.demoMode || false;
return cb(null, invoice, origInvoice);
});
it('should calculate the total amount paid', function() {
var curTime = new Date().getTime();
var paymentA = { status: 'partial', amount_paid: 0.4, created: (curTime - 10000) };
var paymentB = { status: 'invalid', amount_paid: 1.5535, created: (curTime - 5000) };
var paymentC = { status: 'paid', amount_paid: 0.2433, created: curTime };
var paymentD = { status: 'overpaid', amount_paid: 5.123456789, spot_rate: 400, created: (curTime + 10000) };
var invoice = { currency: 'BTC' };
var payments = [ paymentA, paymentB, paymentC, paymentD ];
assert.equal('5.76675679', invoiceHelper.getTotalPaid(invoice, payments).toString());
paymentA = { status: 'partial', amount_paid: 0.4, spot_rate: 421, created: (curTime - 10000) };
paymentB = { status: 'invalid', amount_paid: 1.5535, spot_rate: 411.23, created: (curTime - 5000) };
paymentC = { status: 'paid', amount_paid: 0.2433, spot_rate: 415.26, created: curTime };
paymentD = { status: 'overpaid', amount_paid: 5.123456789, spot_rate: 456.43, created: (curTime + 10000) };
invoice = { currency: 'USD' };
payments = [ paymentA, paymentB, paymentC, paymentD ];
assert.equal('2607.93', invoiceHelper.getTotalPaid(invoice, payments).toString());
});
db.findInvoiceAndPayments(invoiceId, function(err, invoice, paymentsArr) {
if (err) {
return cb(err, null);
}
var paymentHistory = invoiceHelper.getPaymentHistory(paymentsArr);
invoice.payment_history = paymentHistory;
var isUSD = invoice.currency.toUpperCase() === 'USD';
invoiceHelper.calculateLineTotals(invoice);
invoice.total_paid = invoiceHelper.getTotalPaid(invoice, paymentsArr);
invoice.balance_due = isUSD ? helper.roundToDecimal(invoice.balance_due, 2) : Number(invoice.balance_due);
invoice.remaining_balance = invoiceHelper.getAmountDue(invoice.balance_due, invoice.total_paid, invoice.currency);
var invoiceExpired = validate.invoiceExpired(invoice);
if (invoiceExpired && invoice.remaining_balance > 0) {
var expiredErr = new Error('Error: Invoice is expired.');
return cb(expiredErr, null);
}
else if (invoice.expiration && !invoiceExpired && invoice.remaining_balance > 0) {
invoice.expiration_msg = 'Expires: ' + helper.getExpirationCountDown(invoice.expiration);
}
// Is the invoice paid in full?
var hasPending = false;
paymentHistory.forEach(function(payment) {
payment.url = config.chainExplorerUrl + '/' + payment.tx_id; // populate chain explorer url
if(isUSD) {
var amountUSD = new BigNumber(payment.amount_paid).times(payment.spot_rate);
amountUSD = helper.roundToDecimal(amountUSD, 2);
payment.amount_usd = amountUSD;
}
if (payment.status.toLowerCase() === 'pending') {
hasPending = true;
}
});
invoice.is_paid = !hasPending && invoice.remaining_balance <= 0;
invoice.is_overpaid = !hasPending && invoice.remaining_balance < 0;
return cb(null, invoice);
});