Why my if condition doesn't responding correctly

how are you? I have a problem with my if condition. When I set the condition to different from zero it displays all the products to me, but when I set higher even though the condition is to check it does not show anything yet there are products with a timeleft> 0. No matter how much I modify the code, it doesn't show me anything. Need help

Padding roomProductCard(BuildContext context, String bidProductId, String name, String price,
  List imageUrl, int datebid, int datetime) {
  CountdownTimerController controller;
  int date = DateTime.now().millisecondsSinceEpoch;
  int timeleft;
  timeleft = (datebid + datetime) - date;
  int endTime = DateTime.now().millisecondsSinceEpoch + timeleft;
  if(timeleft>0)
 return Padding(
  padding: const EdgeInsets.all(6.0),
  child: GestureDetector(
    onTap: () {
      Navigator.push(context,
          MaterialPageRoute(builder: (context) => productBidPage(productId: bidProductId,)));
    },
    child: Container(
      decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(10.0),
          boxShadow: [
            BoxShadow(
                color: Colors.grey, offset: Offset(-2, -1), blurRadius: 5)
          ]),
      child: Column(
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              ClipRRect(
                  borderRadius: BorderRadius.circular(7.0),
                  child: Image.network(
                    "${imageUrl[0]}",
                    height: 500,
                    width: 450,
                  )),
            ],
          ),
          Padding(
            padding: const EdgeInsets.all(20.0),
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                Text(' ${name} ',
                    style: TextStyle(
                        fontSize: 24.0, fontWeight: FontWeight.bold)),
                Text('$price ',
                    style: TextStyle(
                        fontSize: 20.0,
                        fontWeight: FontWeight.bold,
                        color: Colors.red)),
              ],
            ),
          ),
          CountdownTimer(
            textStyle: TextStyle(
              fontWeight: FontWeight.bold,
              fontSize: 20.0,
            ),
            controller: controller,
            onEnd: () {
              print('end');
            },
            endTime: endTime,
          ),
        ],
      ),
    ),
  ),
);

this function is called in the stream builder

 Column(
                  children: [
                    StreamBuilder<QuerySnapshot>(
                        stream: roomProduct.roomProductData.where('roomId', isEqualTo: widget.roomId)
                            .snapshots(),
                        builder:(context, snap){
                          if(!snap.hasData){
                            return Center(
                                child: CircularProgressIndicator(
                                  valueColor: AlwaysStoppedAnimation<Color>(
                                      Colors.blue),
                                ));
                          }else
                            {
                              return ListView.builder(
                              shrinkWrap: true,
                              physics: ScrollPhysics(),
                                itemCount: snap.data.docs.length,
                                itemBuilder: (context, int index){
                                final item = snap.data.docs[index];
                                return roomProductCard(context, item.data()['id'],
                                    item.data()['productName'],
                                    item.data()['price'],
                                    item.data()['pictures'],
                                    item.data()['dateBid'],
                                    item.data()['datetime']);
                                },
                              );
                            }
                          return Container();
                        }
                    )
                  ],
                )