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<?php |
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namespace Mokka\Exchange\Market; |
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use GuzzleHttp\Client; |
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use Mokka\Action\BuyAction; |
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use Mokka\Action\SellAction; |
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use Mokka\Exchange\ExchangeInterface; |
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class Binance implements ExchangeInterface |
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{ |
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/** |
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* @var |
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*/ |
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private static $apiService; |
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public function __construct($config) |
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{ |
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self::$apiService = new BinanceApiService($config['api_key'], $config['api_secret']); |
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} |
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/** |
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* Get symbol price from source |
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* @param $symbol |
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* @return float |
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*/ |
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public function getPrice($symbol) : float |
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{ |
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$client = new Client(); |
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$response = $client->get("https://api.binance.com/api/v3/ticker/price?symbol={$symbol}"); |
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$response = json_decode($response->getBody()->getContents(), TRUE); |
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return (float) $response['price']; |
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} |
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/** |
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* Get historical prices |
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* @param $symbol |
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* @return array |
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*/ |
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public function getHistoricalPrices($symbol): array |
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{ |
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// TODO: Implement getHistoricalPrices() method. |
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} |
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/** |
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* Put buy order |
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* @param BuyAction $action |
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* @return mixed|\Psr\Http\Message\ResponseInterface |
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*/ |
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public function buyOrder(BuyAction $action) |
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{ |
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$getServerTime = self::$apiService->getServerTime()->getBody()->getContents(); |
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$getServerTime = json_decode($getServerTime, true); |
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$params = [ |
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'symbol' => $action->getSymbol(), |
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'price' => $action->getActionPrice(), |
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'quantity' => round($action->getQuantity(), 2), |
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'side' => 'BUY', |
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'type' => 'LIMIT', |
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'timeInForce' => 'GTC', |
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'recvWindow' => 5000, |
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'timestamp' => $getServerTime['serverTime'] |
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]; |
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return self::$apiService->postOrderTest($params); |
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} |
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/** |
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* Put sell order |
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* @param SellAction $action |
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* @return mixed |
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*/ |
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public function sellOrder(SellAction $action) |
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{ |
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$getServerTime = self::$apiService->getServerTime()->getBody()->getContents(); |
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$getServerTime = json_decode($getServerTime, true); |
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$params = [ |
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'symbol' => $action->getSymbol(), |
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'price' => $action->getActionPrice(), |
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'quantity' => $action->getQuantity(), |
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'side' => 'SELL', |
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'type' => 'LIMIT', |
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'timeInForce' => 'GTC', |
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'recvWindow' => 10000000, |
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'timestamp' => $getServerTime['serverTime'] |
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]; |
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return self::$apiService->postOrderTest($params); |
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} |
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/** |
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* @return string |
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*/ |
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public function getName() |
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{ |
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return 'binance'; |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getBalance() |
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{ |
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//get server time. dont use user local machine time |
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$client = new Client(); |
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$response = $client->get("https://api.binance.com/api/v1/time"); |
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$response = json_decode($response->getBody()->getContents(), TRUE); |
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$account = self::$apiService->getAccount(['timestamp' => $response['serverTime']]); |
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$account = json_decode($account->getBody()->getContents(), TRUE); |
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$balance = null; |
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//catch BTC balance |
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foreach ($account['balances'] as $item) { |
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if ($item['asset'] == 'BTC') { |
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$balance = $item['free']; |
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break; |
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} |
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} |
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return $balance; |
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} |
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} |
bencagri /
mokka
For hinted functions/methods where all return statements with the correct type are only reachable via conditions, ?null? gets implicitly returned which may be incompatible with the hinted type. Let?s take a look at an example: