<?php
session_start();
if(isset($_SESSION['dealer_id'])){
require 'db.connect.php';
require 'send_mail.php';
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
$tz = 'Asia/Kolkata'; 
date_default_timezone_set($tz);
$date = date('Y-m-d H:i:s');
$dealer_id = $_SESSION['dealer_id'];
$order_id = $_POST['order_id'];
$product_id = $_POST['product_id'];
$qty = $_POST['qty'];
$get_sub = mysqli_query($conn, "SELECT * FROM tbl_dealer_ef_sub where prod_id='$product_id' and order_id = '$order_id' and dealer_id = '$dealer_id'");
$check_rows = mysqli_num_rows($get_sub);
if($check_rows > 0){
    // update the cart
    $set_sub = mysqli_fetch_assoc($get_sub);
    $current_qty = $set_sub['qty'];
    $price = $set_sub['price'];
    $mod_qty = $current_qty + $qty;
    $mod_price = $mod_qty * $price;
    $get_prod_info = mysqli_query($conn, "SELECT * FROM shop_product where product_id = '$product_id'");
$set_prod_info = mysqli_fetch_assoc($get_prod_info);
$split = explode("+",$set_prod_info['offer_unit']);
        $quotient = floor($mod_qty / $split[0]);  
        $remainder = $mod_qty % $split[0];  
        if($remainder == 0){
            $free_qty = $quotient * $split[1];
        }else{
            $free_qty = $quotient;
        }
        $update = "UPDATE tbl_dealer_ef_sub SET qty='$mod_qty', free_qty='$free_qty', tot_price='$mod_price' where order_id='$order_id' and prod_id = '$product_id' and dealer_id = '$dealer_id'";
        if(mysqli_query($conn, $update)){
            $msg = array("icon"=>"success", "title"=>"Success..", "text"=>"Product Qty updated successfully", "order_id"=>$order_id);
            echo json_encode($msg);
            exit;
        }else{
            $msg = array("icon"=>"error", "title"=>"Error..", "text"=>"Product Qty Not updated successfully", "order_id"=>$order_id);
            echo json_encode($msg); 
            exit;
        }
}
}
?>