/**
 * Google Photos OAuth & API Test
 *
 * Usage:
 *   node TEST/testGooglePhotosAPI.js <ACCESS_TOKEN>
 *   GOOGLE_ACCESS_TOKEN=ya29.xxx node TEST/testGooglePhotosAPI.js
 *
 * How to get a token for manual testing:
 *   1. Go to https://developers.google.com/oauthplayground
 *   2. Select "Photos Library API v1" → photoslibrary scope
 *   3. Authorise the API
 *   4. Exchange the authorization code for tokens
 *   5. Copy the access token and pass it to this script
 *
 * Tests:
 *   1. Validates the token against the userinfo endpoint
 *   2. Lists media items from Google Photos
 *   3. Lists albums from Google Photos
 */

const API_BASE = 'https://photoslibrary.googleapis.com/v1';
const USERINFO_URL = 'https://www.googleapis.com/oauth2/v2/userinfo';

async function main() {
  const token = process.argv[2] || process.env.GOOGLE_ACCESS_TOKEN;

  if (!token) {
    console.error('\nNo access token provided.');
    console.error('Usage:  node TEST/testGooglePhotosAPI.js <ACCESS_TOKEN>');
    console.error('Or set: GOOGLE_ACCESS_TOKEN=ya29.xxx node TEST/testGooglePhotosAPI.js');
    console.error('\nTo obtain a token go to https://developers.google.com/oauthplayground');
    console.error('and authorise the Photos Library API v1 scope.\n');
    process.exit(1);
  }

  const headers = { Authorization: `Bearer ${token}` };

  console.log('\n--- Google Photos API Test ---\n');

  // Test 1 — User info
  console.log('[1] Fetching user info...');
  try {
    const res = await fetch(USERINFO_URL, { headers });
    if (!res.ok) throw new Error(`HTTP ${res.status}: ${await res.text()}`);
    const user = await res.json();
    console.log(`    Authenticated as: ${user.email} (${user.name})\n`);
  } catch (err) {
    console.log(`    Failed: ${err.message}\n`);
  }

  // Test 2 — List media items
  console.log('[2] Listing media items (first 10)...');
  try {
    const res = await fetch(`${API_BASE}/mediaItems?pageSize=10`, { headers });
    if (!res.ok) throw new Error(`HTTP ${res.status}: ${await res.text()}`);
    const data = await res.json();
    const items = data.mediaItems || [];
    console.log(`    Found ${items.length} items`);
    items.slice(0, 5).forEach((item, i) => {
      console.log(`    ${i + 1}. ${item.filename}  (${item.mimeType})`);
    });
    if (items.length > 5) console.log(`    ... and ${items.length - 5} more`);
    if (data.nextPageToken) console.log('    More pages available');
    console.log();
  } catch (err) {
    console.log(`    Failed: ${err.message}\n`);
  }

  // Test 3 — List albums
  console.log('[3] Listing albums...');
  try {
    const res = await fetch(`${API_BASE}/albums?pageSize=10`, { headers });
    if (!res.ok) throw new Error(`HTTP ${res.status}: ${await res.text()}`);
    const data = await res.json();
    const albums = data.albums || [];
    console.log(`    Found ${albums.length} albums`);
    albums.slice(0, 5).forEach((album, i) => {
      console.log(`    ${i + 1}. "${album.title}" - ${album.mediaItemsCount || 0} items`);
    });
    console.log();
  } catch (err) {
    console.log(`    Failed: ${err.message}\n`);
  }

  console.log('--- Tests complete ---\n');
}

main().catch((err) => {
  console.error('Unhandled error:', err);
  process.exit(1);
});