#!/usr/bin/env node
/**
 * Publish Post to Facebook Page via Meta Graph API v19.0
 */

const ACCESS_TOKEN = process.env.META_ACCESS_TOKEN || 'EAAM8GXpb76wBSCN6XYlYI5Vfje6F8DQDGkDfbnIhONMklZCBxlru8JptWdlScLTrSZCvTMyZAUHwjxC5Y96hKSiS6RmiKtxtYy8JEvVlnGZBpYG8U30ZBlPqgrR9PzBS6G0uRNRsd6Xdf4hh94N6R2qsix60YwNDq1ZCTImTSRn3ZCgJbZBZBZCpEZCRXkQSZB0kAZA9ZAkuYqXevLJZAD6OIyNT3kbangQCClH2FlZAAMusgJAWeXOmTdZCS6RZAmT4uk5DtybF0ZCluMZBZBSoi3pdb0zyZAgQKU';
const PAGE_ID = process.env.META_PAGE_ID || '61588173848643';

async function publishPost(message, imageUrl = null) {
  if (!PAGE_ID) {
    throw new Error('META_PAGE_ID (Page ID) is required to publish a post.');
  }

  const endpoint = imageUrl ? `${PAGE_ID}/photos` : `${PAGE_ID}/feed`;
  const url = new URL(`https://graph.facebook.com/v19.0/${endpoint}`);
  url.searchParams.append('access_token', ACCESS_TOKEN);

  const payload = imageUrl ? { caption: message, url: imageUrl } : { message };

  const res = await fetch(url.toString(), {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(payload)
  });

  const data = await res.json();
  if (data.error) {
    throw new Error(`Meta Graph API Error: ${data.error.message}`);
  }
  return data;
}

if (require.main === module) {
  const pageId = process.argv[2] || PAGE_ID;
  const msg = process.argv[3] || 'اختبار النشر التلقائي عبر Tripz AI Agent';
  if (!pageId) {
    console.error('Please provide Page ID as first parameter: node scripts/publish-facebook-post.js <PAGE_ID> "[Message]"');
    process.exit(1);
  }
  publishPost(msg).then(res => console.log('Post published successfully:', res)).catch(err => console.error(err.message));
}

module.exports = { publishPost };