Enviar Mídia com Upload

async function sendMultipleFiles(channelId, remoteJid, files) {
  const results = [];

  for (const file of files) {
    const formData = new FormData();
    formData.append('channel_id', channelId);
    formData.append('remote_jid', remoteJid);
    formData.append('file', file);

    const response = await fetch(
      'https://api.leavo.ai/backend/messages/send-media',
      {
        method: 'POST',
        headers: {
          'Authorization': 'Bearer sua_chave_aqui'
        },
        body: formData
      }
    );

    const result = await response.json();
    results.push(result);

    // Pequeno delay entre envios para evitar rate limit
    await new Promise(r => setTimeout(r, 500));
  }

  return results;
}