<?php
session_start();

if (!isset($_SESSION['user_id']) || $_SESSION['user_role'] !== 'restaurant_owner') {
    header('Location: login.php');
    exit();
}

require_once 'db/config.php';

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $order_id = filter_input(INPUT_POST, 'order_id', FILTER_VALIDATE_INT);
    $status = filter_input(INPUT_POST, 'status', FILTER_SANITIZE_STRING);
    $allowed_statuses = ['pending', 'confirmed', 'delivered', 'cancelled'];

    if ($order_id && $status && in_array($status, $allowed_statuses)) {
        $pdo = db();
        // Verify the order belongs to the logged-in user's restaurant
        $stmt = $pdo->prepare(
            "SELECT o.id FROM orders o JOIN restaurants r ON o.restaurant_id = r.id WHERE o.id = ? AND r.user_id = ?"
        );
        $stmt->execute([$order_id, $_SESSION['user_id']]);
        $order_exists = $stmt->fetch();

        if ($order_exists) {
            $stmt_update = $pdo->prepare("UPDATE orders SET status = ? WHERE id = ?");
            $stmt_update->execute([$status, $order_id]);
        }
    }
}

header('Location: dashboard.php');
exit();