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

/**
 * Get pending orders for a user at a specific business
 * GET: ?UserID=int&BusinessID=int
 * Returns orders with status 1-3 (Submitted, Preparing, Ready)
 */

$response = ['OK' => false];

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

    if ($UserID <= 0) {
        $response['ERROR'] = 'missing_user';
        $response['MESSAGE'] = 'UserID is required';
        jsonResponse($response);
    }

    if ($BusinessID <= 0) {
        $response['ERROR'] = 'missing_business';
        $response['MESSAGE'] = 'BusinessID is required';
        jsonResponse($response);
    }

    $qOrders = queryTimed("
        SELECT
            o.ID, o.UUID, o.OrderTypeID, o.StatusID, o.SubmittedOn,
            o.ServicePointID,
            sp.Name AS Name,
            b.Name AS BizName,
            (SELECT COALESCE(SUM(oli.Price * oli.Quantity), 0)
             FROM OrderLineItems oli
             WHERE oli.OrderID = o.ID AND oli.IsDeleted = 0 AND oli.ParentOrderLineItemID = 0) AS Subtotal
        FROM Orders o
        LEFT JOIN ServicePoints sp ON sp.ID = o.ServicePointID
        LEFT JOIN Businesses b ON b.ID = o.BusinessID
        WHERE o.UserID = ? AND o.BusinessID = ? AND o.StatusID IN (1, 2, 3)
        ORDER BY o.SubmittedOn DESC
        LIMIT 5
    ", [$UserID, $BusinessID]);

    $orders = [];
    foreach ($qOrders as $row) {
        $statusName = match ((int) $row['StatusID']) {
            1 => 'Submitted', 2 => 'Preparing', 3 => 'Ready for Pickup', default => '',
        };
        $orderTypeName = match ((int) $row['OrderTypeID']) {
            1 => 'Dine-In', 2 => 'Takeaway', 3 => 'Delivery', default => '',
        };

        $orders[] = [
            'OrderID'       => (int) $row['ID'],
            'UUID'          => $row['UUID'],
            'OrderTypeID'   => (int) $row['OrderTypeID'],
            'OrderTypeName' => $orderTypeName,
            'StatusID'      => (int) $row['StatusID'],
            'StatusName'    => $statusName,
            'SubmittedOn'   => toISO8601($row['SubmittedOn']),
            'ServicePointID' => (int) ($row['ServicePointID'] ?? 0),
            'Name'          => trim($row['Name'] ?? '') !== '' ? $row['Name'] : '',
            'Subtotal'      => (float) $row['Subtotal'],
        ];
    }

    $response['OK'] = true;
    $response['ORDERS'] = $orders;
    $response['HAS_PENDING'] = count($orders) > 0;

} catch (Exception $e) {
    $response['ERROR'] = 'server_error';
    $response['MESSAGE'] = $e->getMessage();
}

jsonResponse($response);