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

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

$method = $_SERVER['REQUEST_METHOD'];

if ($method === 'GET') {
    try {
        $stmt = db()->prepare("SELECT * FROM messages ORDER BY created_at DESC LIMIT 50");
        $stmt->execute();
        $messages = $stmt->fetchAll(PDO::FETCH_ASSOC);
        echo json_encode(array_reverse($messages));
    } catch (Exception $e) {
        echo json_encode(['error' => $e->getMessage()]);
    }
} elseif ($method === 'POST') {
    $input = json_decode(file_get_contents('php://input'), true);
    $username = $input['username'] ?? 'Anónimo';
    $message = $input['message'] ?? '';

    if (empty($message)) {
        echo json_encode(['error' => 'Mensaje vacío']);
        exit;
    }

    try {
        $stmt = db()->prepare("INSERT INTO messages (username, message) VALUES (?, ?)");
        $stmt->execute([$username, $message]);
        echo json_encode(['success' => true]);
    } catch (Exception $e) {
        echo json_encode(['error' => $e->getMessage()]);
    }
}