/**
* Validates amount to ensure it follows the rules of monero
*
* @param string|float amount
* @return bool
*/
public function valid_amount($amount)
{
if (!is_numeric($amount)) {
return FALSE;
}
// XMR is limited to 12 decimals
if (bc::count_decimals($amount) > 12) {
return FALSE;
}
#// The maximum payment is depended on your system, 32-bit is 10 digits and 64-bit is 19 digits
#$max_digits = strlen(PHP_INT_MAX);
// PHP 64-bit does not support more than 9223372036854775807 (19-digits)
if (bc::is($amount, '>=', '9223372.036854775807')) {
return FALSE;
}
return TRUE;
}
/**
* Check if user has sufficient balance
*
* @param object user
* @param decimal amount to check
* @return bool true if enough balance (equal or more)
*/
public function available_balance($user, $amount)
{
return (bool) bc::is($this->get_balance($user), '>=', $amount);
}
$payment_ids = $pids->fetch_assoc();
// Credit user his funds (if user has no balance for this asset, we create it, otherwise update)
$db->query("INSERT INTO \n users_assets (`user_id`, `asset_id`, `balance`) \n VALUES \n (" . $payment_ids['user_id'] . "," . $asset->get_id() . "," . $row['amount'] . ")\n ON DUPLICATE KEY UPDATE \n `balance` = balance + " . $row['amount'] . ";");
}
}
$db->query('COMMIT');
// --------------------------------------------------------------------
//
// Process pending withdraws
//
// --------------------------------------------------------------------
$result = $db->query('SELECT * FROM withdraws_pending WHERE status = 1 ORDER BY id ASC LIMIT 1000');
$payments = array();
while ($row = $result->fetch_array(MYSQL_ASSOC)) {
// If there is not enough balance, we'll try again later ("break" instead of "continue" so that payment are processed as a queue, most fair)
if (bc::is($row['amount'], '>', $wallet->get_unlocked_balance())) {
break;
}
// In rare cases that bulk_transfer sends payment, but script does a rollback, the transfer will not be repeated by setting status to error first (requiring manual approval):
$db->query("UPDATE withdraws_pending SET status = -1, error = 'PAYMENT IN PROCESS' WHERE id = " . $row['id']);
$tx_id = $wallet->transfer($row['address'], $row['amount'], $row['payment_id'], $row['mixin'], $row['fee'], 0);
$db->query('START TRANSACTION');
if (!$tx_id) {
$errors = $wallet->get_errors();
$error_message = (isset($errors[0]) and isset($errors[0]['message'])) ? $errors[0]['message'] : 'Unknown error';
$db->query("UPDATE withdraws_pending SET error = " . quote_escape($error_message) . " WHERE id = " . $row['id']);
} else {
$sql = insert_query('withdraws_complete', array('user_id' => $row['user_id'], 'address' => $row['address'], 'amount' => $row['amount'], 'fee' => $row['fee'], 'date_paid' => array('UTC_TIMESTAMP()'), 'asset_id' => $row['asset_id'], 'mixin' => $row['mixin'], 'txn' => $tx_id));
$db->query($sql);
$db->query("DELETE FROM withdraws_pending WHERE id = " . $row['id']);
}
/**
* Validates withdraw (minimum withdraw)
*
* @param string|float amount
* @param string|float fee
* @return bool
*/
public function valid_withdraw($amount, $fee)
{
global $config;
$amount_after_fee = bc::op($amount, '-', $fee);
// Check if amount after fee is negative
if (bc::is($amount_after_fee, '=<', '0')) {
return FALSE;
}
// Enforce minimum withdraw
return (bool) (bccomp($amount, $config['asset'][$this->id]['min_withdraw']) !== -1);
}
