feat:增加bn设置双向持仓模式

@@ -23,6 +23,7 @@ class Api
     }
 
     //-----------public interface ------------
+    //获取所有品种资金费率
     public function getPremiumIndex($params)
     {
         $url = "/fapi/v1/premiumIndex";
@@ -31,12 +32,20 @@ class Api
     }
 
     //-------private interface ------------
+    //获取用户监听key
     public function getListenKey($params)
     {
         $url = "/fapi/v1/listenKey";
         $method = "POST";
         return $this->request($method, $url, [], $this->apiInfo);
     }
+    //设置持仓模式
+    public function setPositionMode($params)
+    {
+        $url = "/fapi/v1/positionSide/dual";
+        $method = "POST";
+        return $this->request($method, $url, $params, $this->apiInfo);
+    }
 
     //------------------------------------
 

@@ -57,11 +57,12 @@ class ExBroker
         );
     }
 
-    public function klineListen($symbol, $interval, callable $onData) {
-        $this->wsKline = new Websocket($this->host. $this->path);
+    public function klineListen($symbol, $interval, callable $onData)
+    {
+        $this->wsKline = new Websocket($this->host . $this->path);
         $this->wsKline->connect(
             $onOpen = function () use ($symbol, $interval) {
-                $subData = json_encode(['method' => 'SUBSCRIBE', 'params' => [$symbol. '@kline_'. $interval], 'id' => 1]);
+                $subData = json_encode(['method' => 'SUBSCRIBE', 'params' => [$symbol . '@kline_' . $interval], 'id' => 1]);
                 $this->wsKline->push($subData);
             },
             $onMessage = function ($data) use ($onData) {
@@ -85,4 +86,14 @@ class ExBroker
     {
         $res = $this->api->getPremiumIndex([]);
     }
+    //设置双向持仓模式
+    public function setLongShortMode($isLongShortMode)
+    {
+        if ($isLongShortMode) {
+            $res = $this->api->setPositionMode(['dualSidePosition' => 'true']);
+        } else {
+            $res = $this->api->setPositionMode(['dualSidePosition' => 'false']);
+        }
+        return $res;
+    }
 }

@@ -256,10 +256,10 @@ class ExBroker
         output("设置合约模式", $res);
     }
     // 设置为双向持仓
-    public function setLongShortMode($isLongShort)
+    public function setLongShortMode($isLongShortMode)
     {
         $param = [
-            'posMode' => $isLongShort ? 'long_short_mode' : 'net_mode',
+            'posMode' => $isLongShortMode ? 'long_short_mode' : 'net_mode',
         ];
         $res = $this->api->setPositionMode($param);
         output("设置持仓模式", $res);