future-private: add getSingleAccount request

src/LaravelBitunixApi.php

@@ -8,11 +8,12 @@ use Msr\LaravelBitunixApi\Requests\ChangeMarginModeRequestContract;
 use Msr\LaravelBitunixApi\Requests\FlashClosePositionRequestContract;
 use Msr\LaravelBitunixApi\Requests\FutureKLineRequestContract;
 use Msr\LaravelBitunixApi\Requests\GetPendingPositionsRequestContract;
+use Msr\LaravelBitunixApi\Requests\GetSingleAccountRequestContract;
 use Msr\LaravelBitunixApi\Requests\Header;
 use Msr\LaravelBitunixApi\Requests\PlaceOrderRequestContract;
 use Psr\Http\Message\ResponseInterface;
 
-class LaravelBitunixApi implements ChangeLeverageRequestContract, ChangeMarginModeRequestContract, FlashClosePositionRequestContract, FutureKLineRequestContract, GetPendingPositionsRequestContract, PlaceOrderRequestContract
+class LaravelBitunixApi implements ChangeLeverageRequestContract, ChangeMarginModeRequestContract, FlashClosePositionRequestContract, FutureKLineRequestContract, GetPendingPositionsRequestContract, GetSingleAccountRequestContract, PlaceOrderRequestContract
 {
     private Client $publicFutureClient;
 
@@ -187,4 +188,17 @@ class LaravelBitunixApi implements ChangeLeverageRequestContract, ChangeMarginMo
 
         return $response;
     }
+
+    public function getSingleAccount(string $marginCoin): ResponseInterface
+    {
+        $queryParams = [
+            'marginCoin' => $marginCoin,
+        ];
+
+        $response = $this->getPrivateFutureClient($queryParams, [])->get('account', [
+            'query' => $queryParams,
+        ]);
+
+        return $response;
+    }
 }

src/LaravelBitunixApiServiceProvider.php

@@ -8,6 +8,7 @@ use Msr\LaravelBitunixApi\Requests\ChangeMarginModeRequestContract;
 use Msr\LaravelBitunixApi\Requests\FlashClosePositionRequestContract;
 use Msr\LaravelBitunixApi\Requests\FutureKLineRequestContract;
 use Msr\LaravelBitunixApi\Requests\GetPendingPositionsRequestContract;
+use Msr\LaravelBitunixApi\Requests\GetSingleAccountRequestContract;
 use Msr\LaravelBitunixApi\Requests\PlaceOrderRequestContract;
 use Spatie\LaravelPackageTools\Package;
 use Spatie\LaravelPackageTools\PackageServiceProvider;
@@ -39,5 +40,6 @@ class LaravelBitunixApiServiceProvider extends PackageServiceProvider
         $this->app->bind(PlaceOrderRequestContract::class, LaravelBitunixApi::class);
         $this->app->bind(FlashClosePositionRequestContract::class, LaravelBitunixApi::class);
         $this->app->bind(GetPendingPositionsRequestContract::class, LaravelBitunixApi::class);
+        $this->app->bind(GetSingleAccountRequestContract::class, LaravelBitunixApi::class);
     }
 }

src/Requests/GetSingleAccountRequestContract.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Msr\LaravelBitunixApi\Requests;
+
+use Psr\Http\Message\ResponseInterface;
+
+interface GetSingleAccountRequestContract
+{
+    /**
+     * Get account details with the given margin coin
+     *
+     * @param string $marginCoin Margin coin (e.g., 'USDT')
+     * @return ResponseInterface
+     */
+    public function getSingleAccount(string $marginCoin): ResponseInterface;
+}