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

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

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

try {
    $pdo = db();

    if ($id) {
        $stmt = $pdo->prepare("SELECT e.*, r.name as role_name FROM employees e LEFT JOIN roles r ON e.role_id = r.id WHERE e.id = ?");
        $stmt->execute([$id]);
        $employee = $stmt->fetch(PDO::FETCH_ASSOC);

        if ($employee) {
            echo json_encode($employee);
        } else {
            http_response_code(404);
            echo json_encode(['error' => 'Employee not found']);
        }
    } else {
        $stmt = $pdo->query("SELECT e.*, r.name as role_name FROM employees e LEFT JOIN roles r ON e.role_id = r.id");
        $employees = $stmt->fetchAll(PDO::FETCH_ASSOC);
        echo json_encode($employees);
    }

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