<?php
require_once __DIR__ . '/../helpers.php';
runAuth();

/**
 * Get user's active cart (status=0) if one exists
 * GET: ?UserID=int&BusinessID=int (optional)
 */

$UserID = (int) ($_GET['UserID'] ?? 0);
$BusinessID = (int) ($_GET['BusinessID'] ?? 0);

if ($UserID <= 0) {
    jsonResponse(['OK' => false, 'ERROR' => 'UserID is required']);
}

$sql = "
    SELECT
        o.ID AS OrderID,
        o.UUID AS OrderUUID,
        o.BusinessID,
        b.Name AS BusinessName,
        o.OrderTypeID,
        COALESCE(ot.Name, 'Undecided') AS OrderTypeName,
        o.ServicePointID,
        COALESCE(sp.Name, '') AS ServicePointName,
        (SELECT COUNT(*) FROM OrderLineItems oli
         WHERE oli.OrderID = o.ID AND oli.ParentOrderLineItemID = 0 AND oli.IsDeleted = 0) AS ItemCount
    FROM Orders o
    INNER JOIN Businesses b ON b.ID = o.BusinessID
    LEFT JOIN tt_OrderTypes ot ON ot.ID = o.OrderTypeID
    LEFT JOIN ServicePoints sp ON sp.ID = o.ServicePointID
    WHERE o.UserID = ?
      AND o.StatusID = 0
";

$params = [$UserID];

if ($BusinessID > 0) {
    $sql .= " AND o.BusinessID = ?";
    $params[] = $BusinessID;
}

$sql .= " ORDER BY o.AddedOn DESC LIMIT 1";

try {
    $rows = queryTimed($sql, $params);
    $cart = $rows[0] ?? null;

    if (!$cart) {
        jsonResponse(['OK' => true, 'HAS_CART' => false, 'CART' => null]);
    }

    jsonResponse(['OK' => true, 'HAS_CART' => true, 'CART' => [
        'OrderID'          => (int) $cart['OrderID'],
        'OrderUUID'        => $cart['OrderUUID'],
        'BusinessID'       => (int) $cart['BusinessID'],
        'BusinessName'     => $cart['BusinessName'],
        'OrderTypeID'      => (int) $cart['OrderTypeID'],
        'OrderTypeName'    => $cart['OrderTypeName'],
        'ServicePointID'   => (int) $cart['ServicePointID'],
        'ServicePointName' => $cart['ServicePointName'],
        'ItemCount'        => (int) $cart['ItemCount'],
    ]]);

} catch (Exception $e) {
    jsonResponse(['OK' => false, 'ERROR' => $e->getMessage()]);
}