public function create_pending_session($wallet_id, $product_id = 0, $amount = 0, $currency = 'btc')
{
// Initialize
global $config, $template;
$userid = LOGIN === true ? $GLOBALS['userid'] : 0;
$expire_time = time() + $config['payment_expire_seconds'];
// Get hash
do {
$hash = generate_random_string(120);
if ($row = DB::queryFirstRow("SELECT * FROM coin_pending_payment WHERE pay_hash = %s", hash('sha512', 120))) {
$exists = 1;
} else {
$exists = 0;
}
} while ($exists > 0);
// Get product, if needed
if ($product_id > 0) {
if (!($prow = DB::queryFirstRow("SELECT * FROM products WHERE id = %d", $product_id))) {
trigger_error("Product does not exist, ID# {$product_id}", E_USER_ERROR);
}
$amount = $prow['amount'];
$currency = $prow['currency'];
$item_name = $prow['display_name'];
} else {
$item_name = '';
}
// Get amount
if ($currency == 'fiat') {
$amount_btc = $amount / $config['exchange_rate'];
} else {
$amount_btc = $amount;
$amount = $amount_btc * $config['exchange_rate'];
}
// Get payment address
if ($userid > 0) {
$client = new bip32();
$payment_address = $client->get_user_address($wallet_id, $userid);
// Delete any existing pending payments
DB::query("DELETE FROM coin_pending_payment WHERE payment_address = %s AND status = 'pending'", $payment_address);
} else {
$payment_address = '';
}
// Add to db
DB::insert('coin_pending_payment', array('wallet_id' => $wallet_id, 'pay_hash' => $hash, 'userid' => $userid, 'item_id' => $product_id, 'amount' => $amount, 'amount_btc' => $amount_btc, 'expire_time' => $expire_time, 'payment_address' => $payment_address));
// Template variables
$template->assign('payment_address', $payment_address);
$template->assign('currency', $currency);
$template->assign('amount', fmoney_coin($amount_btc));
$template->assign('amount_fiat', fmoney($amount));
$template->assign('product_id', $product_id);
$template->assign('product_name', $item_name);
// Return hash
return $hash;
}
