making changes as per review

Author: dporwal-shipit

android/src/main/java/com/reactnativesmallcasegateway/SmallcaseGatewayModule.kt

@@ -178,14 +178,14 @@ class SmallcaseGatewayModule(reactContext: ReactApplicationContext) : ReactConte
         }, smallplugPartnerProps = SmallplugPartnerProps(headerColor = "#2F363F", backIconColor = "ffffff"))
     }
 
-@ReactMethod
-fun launchSmallplugWithBranding(targetEndpoint: String, params: String, headerColor: String?, headerOpacity: Double?, backIconColor: String?, backIconOpacity: Double?, promise: Promise
-) {
+    @ReactMethod
+    fun launchSmallplugWithBranding(targetEndpoint: String, params: String, headerColor: String?, headerOpacity: Double?, backIconColor: String?, backIconOpacity: Double?, promise: Promise
+    ) {
         val readableMap = Arguments.createMap().apply {
-            putString("headerColor", headerColor)
-            putDouble("headerOpacity", headerOpacity ?: 1.0)
-            putString("backIconColor", backIconColor)
-            putDouble("backIconOpacity", backIconOpacity ?: 1.0)
+            headerColor?.let { putString("headerColor", it) }
+            headerOpacity?.let { putDouble("headerOpacity", it) }
+            backIconColor?.let { putString("backIconColor", it) }
+            backIconOpacity?.let { putDouble("backIconOpacity", it) }
         }
 
         fun getColorValue(value: Any?, defaultValue: String): String {
@@ -203,7 +203,7 @@ fun launchSmallplugWithBranding(targetEndpoint: String, params: String, headerCo
         var partnerProps: SmallplugPartnerProps? = SmallplugPartnerProps(headerColor = "#2F363F", backIconColor = "ffffff")
 
         try {
-            partnerProps = readableMap?.toHashMap()?.let { map ->
+            partnerProps = readableMap.toHashMap().let { map ->
                 val hc = getColorValue(map["headerColor"], "#2F363F")
                 val ho = map["headerOpacity"]?.let { if (it is Double) it else 1.0 } ?: 1.0
                 val bc = getColorValue(map["backIconColor"], "#ffffff")
@@ -213,19 +213,16 @@ fun launchSmallplugWithBranding(targetEndpoint: String, params: String, headerCo
         } catch (e: Throwable) {
         }
 
-
         SmallcaseGatewaySdk.launchSmallPlug(currentActivity!!, SmallplugData(targetEndpoint, params), object : SmallPlugResponseListener {
             override fun onFailure(errorCode: Int, errorMessage: String) {
                 val err = createErrorJSON(errorCode, errorMessage, null)
-
                 promise.reject("error", err)
             }
 
             override fun onSuccess(smallPlugResult: SmallPlugResult) {
                 val res = resultToWritableMap(smallPlugResult)
                 promise.resolve(res)
             }
-
         }, partnerProps)
     }