<?php
include('connect.php');
if (isset($_POST['coupon'])) {
  $total=$_POST['total'];
  $condition = array('promo_code'=>$_POST['coupon']);
  $coupon_data = $con->query("SELECT * FROM promo_codes WHERE promo_code='".$_POST['coupon']."'");
  if(mysqli_num_rows($coupon_data)>0){
    $coupon_value = mysqli_fetch_assoc($coupon_data);
    $compare = strcmp($coupon_value['promo_code'],$_POST['coupon']);
    if ($compare==0) {

      if ($coupon_value['minimum_order_amount']<=$total && $coupon_value['max_discount_amount']>=$total) {
        
        $coupon_price = $coupon_value['discount'];
        $coupon_message = '<div class="alert alert-success">'.$coupon_value['message'].'</div>';

        if ($coupon_value['discount_type']=='percentage') {
        $discount = round(($coupon_value['discount']/100)*$total,2);
        }else{
          $discount = $coupon_value['discount'];
        }
        $_SESSION['discount_price']=$coupon_value['discount'];
        $_SESSION['discount']=$discount;
        $_SESSION['promo_code']=$coupon_value['promo_code'];
        echo "Promo Code Applied For Successfully'";
      }else{
        $coupon_message = '<div class="alert alert-danger">This promo code is applicable only for order amount greater than or equal to '.$coupon_value['minimum_order_amount'].'</div>';
      }
    }else{
      $coupon_message = '<div class="alert alert-danger">Invalid promo code.</div>';
    }
  }else{
    $coupon_message = '<div class="alert alert-danger">Invalid promo code.</div>';
  }

}
?>