protected function loadQuotes()
{
if ($this->code === null) {
throw new \BadMethodCallException('Initialize code');
}
if ($this->count === null) {
throw new \BadMethodCallException('Initialize count');
}
if ($this->quotes === null) {
$client = new YahooFinanceClient();
$start = date_create()->modify('-1 month');
$end = date_create();
$this->quotes = [];
foreach (range(0, 23) as $month) {
try {
$data = $client->getHistoricalData($this->code, $start, $end);
$this->quotes[] = $data['query']['results']['quote'][0];
} catch (ApiException $e) {
// TODO should be logged? Throws an exception if earlier than certain date
break;
}
$start->modify('-1 month');
$end->modify('-1 month');
}
}
return $this->quotes;
}
/**
* Fetch stock data for symbols
* @param array $symbols
* @param integer $try Number of this try
*/
private function fetchData($symbols, $try = 0)
{
try {
return $this->api->getQuotes($symbols);
} catch (ApiException $e) {
//Yahoo Finance API is sometimes slow or doesn't return a result
//Maximum of 3 retries
if ($try < 3) {
return $this->api->getQuotes($symbols, $try + 1);
}
}
return null;
}
/**
* Search Yahoo Finance stocks
* @param string $searchTerm
* @return array
*/
public function search($searchTerm)
{
$data = $this->api->search($searchTerm);
return $this->createResult($data);
}
