<?php
include('includes/config/config.php');

$data = array();

$sql_expiry_items = "SELECT i.item_name, itm_stk.item_batch_no, itm_stk.expiry_date, itm_stk.stock_qty 
                     FROM tbl_items i
                     JOIN item_stock itm_stk ON i.item_id = itm_stk.item_id
                     WHERE itm_stk.stock_qty > 0 
                     AND itm_stk.ohc_type_id = ?
                     AND itm_stk.item_stock_id NOT IN (SELECT item_stock_id FROM cleanup_item_stock)
                     AND DATE(expiry_date) <= (CURDATE() + INTERVAL ? DAY)";

$stmt = mysqli_prepare($conn, $sql_expiry_items);

if (!$stmt) {
    error_log("Error preparing statement: " . mysqli_error($conn));
    die();
}

$ohc_id = $_SESSION['current_ohcttype'];
$expiryAlertAdvance = getConfigKey("ITEM_EXPIRY_ALERT_DAYS");
if ($expiryAlertAdvance == null) {
    $expiryAlertAdvance = 90;
}

mysqli_stmt_bind_param($stmt, "ss", $ohc_id, $expiryAlertAdvance);
mysqli_stmt_execute($stmt);
$result = mysqli_stmt_get_result($stmt);

if ($result) {
    while ($row = mysqli_fetch_assoc($result)) {
        $data[] = $row; // Append each row to the data array
    }
} else {
    error_log("Error executing statement: " . mysqli_error($conn));
}

// error_log('near expiring');
echo json_encode($data);