chore(fix): resolve issue of unable to use custom colors in header and back icon in smallPlug

Author: dporwal-shipit

ios/SmallcaseGateway.m

@@ -383,9 +383,25 @@ @interface RCT_EXTERN_MODULE(SmallcaseGateway, NSObject)
                  rejecter:(RCTPromiseRejectBlock)reject)
 {
     dispatch_async(dispatch_get_main_queue(), ^(void) {
+        
+        NSString* (^processColorValue)(NSString*, NSString*) = ^NSString*(NSString *color, NSString *defaultColor) {
+            if (color == nil || color.length < 6) {
+                return defaultColor;
+            }
+            if ([color hasPrefix:@"#"]) {
+                return [color substringFromIndex:1];
+            }
+            return color;
+        };
+        
+        NSString *processedHeaderColor = processColorValue(headerColor, @"2F363F");
+        NSString *processedBackIconColor = processColorValue(backIconColor, @"ffffff");
+        
+        double finalHeaderOpacity = headerOpacity != nil ? [headerOpacity doubleValue] : 1.0;
+        double finalBackIconOpacity = backIconOpacity != nil ? [backIconOpacity doubleValue] : 1.0;
 
         SmallplugData *smallplugData = [[SmallplugData alloc] init:targetEndpoint :params];
-        SmallplugUiConfig *smallplugUiConfig = [[SmallplugUiConfig alloc] initWithSmallplugHeaderColor:headerColor headerColorOpacity:headerOpacity backIconColor:backIconColor backIconColorOpacity:backIconOpacity];
+        SmallplugUiConfig *smallplugUiConfig = [[SmallplugUiConfig alloc] initWithSmallplugHeaderColor:processedHeaderColor headerColorOpacity:@(finalHeaderOpacity) backIconColor:processedBackIconColor backIconColorOpacity:@(finalBackIconOpacity)];
 
         [SCGateway.shared launchSmallPlugWithPresentingController:[[[UIApplication sharedApplication] keyWindow] rootViewController] smallplugData:smallplugData smallplugUiConfig:smallplugUiConfig completion:^(id smallplugResponse, NSError * error) {