api.php

<?php
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: GET, POST');
header('Access-Control-Allow-Headers: Content-Type');

$file = __DIR__ . '/presets.json';

if (!file_exists($file)) {
    file_put_contents($file, json_encode([], JSON_PRETTY_PRINT));
}

$action = $_GET['action'] ?? '';

if ($action === 'save') {
    $data = json_decode(file_get_contents('php://input'), true);
    if (!$data || !isset($data['name']) || !isset($data['widgets'])) {
        http_response_code(400);
        echo json_encode(['error' => 'Dados inválidos']);
        exit;
    }

    $current = json_decode(file_get_contents($file), true);
    $current[$data['name']] = $data['widgets'];
    
    file_put_contents($file, json_encode($current, JSON_PRETTY_PRINT));
    echo json_encode(['success' => true]);
    exit;
}

if ($action === 'load') {
    $name = $_GET['name'] ?? '';
    $current = json_decode(file_get_contents($file), true);
    
    if (isset($current[$name])) {
        echo json_encode($current[$name]);
    } else {
        http_response_code(404);
        echo json_encode(['error' => 'Preset não encontrado']);
    }
    exit;
}

if ($action === 'list') {
    $current = json_decode(file_get_contents($file), true);
    echo json_encode(array_keys($current));
    exit;
}

echo json_encode(['error' => 'Ação desconhecida']);