/**
* @desc 生成出可以执行的交易，理论上在一次交易判断中同一个账号最多只能创建一个订单
*/
private function generateTrade()
{
$available_accounts = $this->accounts;
// 满足多市场组合算法
$trades = array();
while (count($available_accounts) > 0) {
// 从账号组总弹出一个账号
$account1 = array_shift($available_accounts);
// 循环剩下的账号与其匹配
foreach ($available_accounts as $account2) {
foreach ($account1->actions as $action) {
// 第一个账号可以卖同时第二个市场也可以买
if ($action === 'sell' && in_array('buy', $account2->actions)) {
$orders = array(new OrderModel($account1, 'sell', $account1->price['buy'], $this->config->trans_unit), new OrderModel($account2, 'buy', $account2->price['sell'], $this->config->trans_unit));
$trade = new TradeModel($orders);
Logger::Log('Generate 1 trade: ' . $trade->__toString());
$trades[] = $trade;
}
// 第一个账号可以买同时第二个市场也可以卖
if ($action === 'buy' && in_array('sell', $account2->actions)) {
$orders = array(new OrderModel($account2, 'sell', $account2->price['buy'], $this->config->trans_unit), new OrderModel($account1, 'buy', $account1->price['sell'], $this->config->trans_unit));
$trade = new TradeModel($orders);
Logger::Log('Generate 1 trade: ' . $trade->__toString());
$trades[] = $trade;
}
}
}
}
// sort trade
for ($i = 0; $i < count($trades); ++$i) {
for ($j = 0; $j < $i; ++$j) {
if ($trades[$j]->getSpread() < $trades[$j + 1]->getSpread()) {
$temp = $trades[$j];
$trades[$j] = $trades[$j + 1];
$trades[$j + 1] = $temp;
}
}
}
return $trades;
}
