<?php
require_once __DIR__ . '/../db/config.php';

header('Content-Type: application/json');

$id = $_GET['id'] ?? null;

try {
    $pdo = db();
    if ($id) {
        $stmt = $pdo->prepare("SELECT * FROM products WHERE id = ?");
        $stmt->execute([$id]);
        $product = $stmt->fetch();
        if ($product) {
            echo json_encode($product);
        } else {
            http_response_code(404);
            echo json_encode(['error' => 'Product not found']);
        }
    } else {
        $stmt = $pdo->query("SELECT * FROM products");
        $products = $stmt->fetchAll();
        echo json_encode($products);
    }
} catch (PDOException $e) {
    http_response_code(500);
    echo json_encode(['error' => 'Database error: ' . $e->getMessage()]);
}