Dokan Cart Update

function dokan_discount_for_lot_quantity() {
    $total_discount_amount_for_lot = 0;
    $flag_for_lot_discount         = false;

    foreach ( WC()->cart->get_cart() as $cart_data ) {
        $product_id                  = $cart_data['product_id'];
        $row_item_quantity           = $cart_data['quantity'];
        $line_total                  = $cart_data['line_total'];
        $price_item                  = get_post_meta($product_id,'_price',true);
        $is_lot_discount             = get_post_meta( $product_id, '_is_lot_discount', true );
        $is_enable_op_discount       = dokan_get_option( 'discount_edit', 'dokan_selling' );
        $is_product_discount_enabled = isset( $is_enable_op_discount['product-discount'] ) && $is_enable_op_discount['product-discount'] == 'product-discount';

        if ( $is_product_discount_enabled && $is_lot_discount == 'yes' ) {
            $lot_discount_percentage = get_post_meta( $product_id, '_lot_discount_amount', true );
            $lot_discount_quantity   = get_post_meta( $product_id, '_lot_discount_quantity', true );

            //edited Code
            $lot_discount_percentage_two = get_post_meta( $product_id, '_lot_discount_amount_two', true );
            $lot_discount_quantity_two   = get_post_meta( $product_id, '_lot_discount_quantity_two', true );

            //edited Code
            $lot_discount_percentage_three = get_post_meta( $product_id, '_lot_discount_amount_three', true );
            $lot_discount_quantity_three   = get_post_meta( $product_id, '_lot_discount_quantity_three', true );

            $discount_status = get_post_meta($product_id,'_discount_status',true);

            if($lot_discount_quantity > 0){
                if ( $row_item_quantity >= $lot_discount_quantity) {

                    if($lot_discount_quantity_two > 0){
                        if($row_item_quantity < $lot_discount_quantity_two){
                            if($lot_discount_percentage > 0){
                                if($discount_status == 'percentage'){

                                    $final = $price_item - (($lot_discount_percentage/100)*$price_item);
                                    $cart_data['data']->set_price($final);

                                }else if($discount_status == 'fixed'){
                                    $cart_data['data']->set_price($lot_discount_percentage);
                                }
                            }else{
                                $cart_data['data']->set_price($price_item);
                            }

                        }else if($row_item_quantity >= $lot_discount_quantity_two){

                            if($lot_discount_quantity_three > 0){

                                if($row_item_quantity < $lot_discount_quantity_three){
                                    if($lot_discount_percentage_two > 0){
                                        if($discount_status == 'percentage'){

                                            $final = $price_item - (($lot_discount_percentage_two/100)*$price_item);
                                            $cart_data['data']->set_price($final);

                                        }else if($discount_status == 'fixed'){
                                            $cart_data['data']->set_price($lot_discount_percentage_two);
                                        }
                                    }else{
                                        $cart_data['data']->set_price($price_item);
                                    }

                                }else{
                                    if($lot_discount_percentage_three > 0){
                                        if($discount_status == 'percentage'){
                                            $final = $price_item - (($lot_discount_percentage_three/100)*$price_item);
                                            $cart_data['data']->set_price($final);

                                        }else if($discount_status == 'fixed'){
                                            $cart_data['data']->set_price($lot_discount_percentage_three);
                                        }
                                    }else{
                                        $cart_data['data']->set_price($price_item);
                                    }

                                }
                            }else{
                                if($lot_discount_percentage_two > 0){
                                    if($discount_status == 'percentage'){

                                        $final = $price_item - (($lot_discount_percentage_two/100)*$price_item);
                                        $cart_data['data']->set_price($final);

                                    }else if($discount_status == 'fixed'){
                                        $cart_data['data']->set_price($lot_discount_percentage_two);
                                    }
                                }else{
                                    $cart_data['data']->set_price($price_item);
                                }
                            }
                        }
                    }else{
                        if($lot_discount_percentage > 0){
                            if($discount_status == 'percentage'){
                                $final = $price_item - (($lot_discount_percentage/100)*$price_item);
                                $cart_data['data']->set_price($final);
                            }else if($discount_status == 'fixed'){
                                $cart_data['data']->set_price($lot_discount_percentage);
                            }
                        }else{
                            $cart_data['data']->set_price($price_item);
                        }
                    }
                }
            }
            $flag_for_lot_discount= false;
        }
    }

    if ( $flag_for_lot_discount == false ) {
        $total_discount_amount_for_lot = 0;
    }

    return apply_filters( 'return_calculated_lot_discount', $total_discount_amount_for_lot );
}
add_action('woocommerce_before_calculate_totals','dokan_discount_for_lot_quantity');