<?php
header('Content-Type: application/json');
require_once __DIR__ . '/../db/config.php';

$query = $_GET['q'] ?? '';
$exact = isset($_GET['exact']) && $_GET['exact'] === 'true';

if (strlen($query) < 2 && !$exact) {
    echo json_encode([]);
    exit;
}

try {
    $pdo = db();
    
    if ($exact) {
        $stmt = $pdo->prepare(
            "SELECT id, name, barcode, price, description 
             FROM products 
             WHERE barcode = ?
             LIMIT 1"
        );
        $stmt->execute([$query]);
    } else {
        $stmt = $pdo->prepare(
            "SELECT id, name, barcode, price, description 
             FROM products 
             WHERE name LIKE ? OR barcode LIKE ?
             LIMIT 10"
        );
        $stmt->execute(['%' . $query . '%', $query . '%']);
    }
    
    $products = $stmt->fetchAll();
    
    echo json_encode($products);

} catch (PDOException $e) {
    http_response_code(500);
    echo json_encode(['error' => 'Database error: ' . $e->getMessage()]);
}
?>