Adding removal of the braces

Author: AbduAmeen

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeThrottlingDecrypter.java

@@ -66,7 +66,19 @@ public YoutubeThrottlingDecrypter() throws ParsingException {
 
     private String parseDecodeFunctionName(final String playerJsCode)
             throws Parser.RegexException {
-        return Parser.matchGroup1(FUNCTION_NAME_PATTERN, playerJsCode);
+            String functionName = Parser.matchGroup1(FUNCTION_NAME_PATTERN, playerJsCode);
+            int arrayStartBrace = functionName.indexOf("[");
+            
+            if (arrayStartBrace > 0) {
+                String arrayVarName = functionName.substring(0, arrayStartBrace);
+                String order = functionName.substring(arrayStartBrace+1, functionName.indexOf("]"));
+                int arrayNum = Integer.parseInt(order);
+                Pattern ARRAY_PATTERN = Pattern.compile(String.format("var %s=\\[(.+?)\\];", arrayVarName));
+                String arrayStr = Parser.matchGroup1(ARRAY_PATTERN, playerJsCode);
+                String names[] = arrayStr.split(",");
+                functionName = names[arrayNum];
+            }
+            return functionName;
     }
 
     @Nonnull