<?php
session_start();
include 'dbconnect.php';
$cart_id=$_SESSION['cart_id'];
 $grand_total=0;
 $total=0;
 $grand_total1=0;
$coupon=$_POST['coupon'];

 

  


  $query="select * from coupon where code='".$coupon."'";
  $res_u = mysqli_query($conn,$query);
  if (mysqli_num_rows($res_u) ==0) {
$_SESSION["error"]="Invalid Coupon ,Try Again";
  header('location:cart.php');

  //  header('location:login.php');
      

  // $sql="insert into customer(name,email,phone,status) values ('$name','$email','$phone','$status')";
  // mysqli_query($conn,$sql);
}
else{
   $squery = "SELECT * FROM product_cart WHERE cart_id='$cart_id' AND status != 'confirm'";
                     $result = mysqli_query($conn,$squery);
                     $i=mysqli_num_rows($result);
                      // echo $i;
                      
                     //$j=1;
                    
                     
  while( $row = mysqli_fetch_array($result))
                   
                    {
                       $flag=$row['flag'];
                     
                      $prdct_id=$row['prduct_id'];
                       $query = "SELECT * FROM product WHERE id='$prdct_id'";
                     $result2 = mysqli_query($conn,$query);
                    
                    $row2 = mysqli_fetch_array($result2);
                     
                   
                    
                      $price=$row2['price'];
                      $item=$row['no_of_item'];
                       $total=$item*$price;
                      $grand_total=$grand_total+$total;


                
                } 
                

                
          
                
                 $squery = "SELECT * FROM product_cart WHERE cart_id='$cart_id'  AND status != 'confirm'";
                 $grand_total2=0;
                     $result = mysqli_query($conn,$squery);
                     $i=mysqli_num_rows($result);
                      // echo $i;
                      
                     //$j=1;
                    
                     
  while( $row = mysqli_fetch_array($result))
                   
                    {
                      $price=$row['price'];
                      $item=$row['no_of_item'];
                       $total1=$item*$price;
                      $grand_total2=$grand_total2+$total1;

                      
  
}
 $query = "select * from coupon where code='".$coupon."'";
                     $result = mysqli_query($conn,$query);
                    
                    $row = mysqli_fetch_array($result);
                    $discount=$row['discount'];
                     $grand_to= $grand_total2+ $grand_total;
                    $discount_rate1=($grand_to*$discount)/100;
                    $discount_rate=round($discount_rate1);

                    
                    $grand_total1=$grand_to-$discount;

                    
//$_SESSION['grand_total1']=$grand_total1+30;
$_SESSION['coupon']=$coupon;
$_SESSION['discount_rate']=$discount;
// echo $_SESSION['grand_total1']; 
// echo $_SESSION['coupon'];
// echo $_SESSION['discount_rate'];

header('location:cart.php');  
}  

?>