// products pie chart
                    double product_total = sale_obj.getDouble(variant); // variant is price or quantity
                    if (product_values.size() < 10) {
                        String productName = sale_obj.getString("name");
                        index = product_names.indexOf(productName);
                        product_label_to_truncate = String.valueOf(priceFormat.format(product_total)) + " " + productName;

                        if (index < 0) {
                            // product doesnt exist in product_labelz
                            product_names.add(productName);
                            product_labelz.add(product_label_to_truncate);
                            product_values.add(new Entry((float) product_total, product_labelz.size() - 1));
                        } else {
                            // read the current total
                            double current_total = groupedProducts.getDouble(productName);
                            // increment by the total
                            product_total = current_total + product_total;
                            product_values.set(index, new Entry((float) product_total, index));
                            product_label_to_truncate = String.valueOf(priceFormat.format(product_total)) + " " + productName;
                            product_labelz.set(index, product_label_to_truncate);
                        }
                        product_totals.add(sale_obj.getString(variant));
                        groupedProducts.put(productName, product_total);
                        Log.d("array_report_products", groupedProducts.toString());
                    }