const BACKEND_URL = process.env.BACKEND_URL || 'http://localhost:3001';

async function main() {
  console.log('\n--- NAS REST backend test ---');
  console.log(`Backend: ${BACKEND_URL}\n`);

  console.log('[1] Health check...');
  try {
    const res = await fetch(`${BACKEND_URL}/api/health`);
    if (!res.ok) throw new Error(`HTTP ${res.status}`);
    const data = await res.json();
    console.log(`    Status: ${data.status}, activeSessions: ${data.activeSessions}, mode: ${data.nasMode}\n`);
  } catch (err) {
    console.log(`    Failed: ${err.message}`);
    console.log('    Start the backend first: cd ServerFiles && npm start\n');
    process.exit(1);
  }

  const host = process.env.NAS_HOST || '127.0.0.1';
  const port = parseInt(process.env.NAS_PORT || '22', 10);
  const username = process.env.NAS_USER || 'demo';
  const password = process.env.NAS_PASS || 'demo';

  let connectionToken = null;
  console.log(`[2] POST /api/nas/sessions (${host}, ${username})...`);
  try {
    const res = await fetch(`${BACKEND_URL}/api/nas/sessions`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ host, port, username, password }),
    });
    if (!res.ok) throw new Error(`HTTP ${res.status}: ${await res.text()}`);
    const data = await res.json();
    if (!data.success) throw new Error(data.error || 'Session failed');
    connectionToken = data.connectionToken;
    console.log('    Session OK.\n');
  } catch (err) {
    console.log(`    Failed: ${err.message}\n`);
    process.exit(1);
  }

  const authHeaders = {
    'Content-Type': 'application/json',
    Authorization: `Bearer ${connectionToken}`,
  };

  console.log('[3] GET /api/nas/media (list)...');
  try {
    const res = await fetch(`${BACKEND_URL}/api/nas/media?limit=10&include=metadata`, {
      headers: { Authorization: `Bearer ${connectionToken}` },
    });
    if (!res.ok) throw new Error(`HTTP ${res.status}: ${await res.text()}`);
    const data = await res.json();
    console.log(`    total=${data.total}, returned=${(data.items || []).length}\n`);
  } catch (err) {
    console.log(`    Failed: ${err.message}\n`);
  }

  console.log('[4] POST /api/nas/media (tiny PNG create)...');
  let createdId = null;
  try {
    const onePxPng =
      'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg==';
    const res = await fetch(`${BACKEND_URL}/api/nas/media`, {
      method: 'POST',
      headers: authHeaders,
      body: JSON.stringify({
        filename: 'test-pixel.png',
        mimeType: 'image/png',
        base64: onePxPng,
        metadata: { DateTimeOriginal: '2020:01:01 12:00:00', test: true },
      }),
    });
    if (!res.ok) throw new Error(`HTTP ${res.status}: ${await res.text()}`);
    const data = await res.json();
    createdId = data.id;
    console.log(`    Created id=${createdId}\n`);
  } catch (err) {
    console.log(`    Failed: ${err.message}\n`);
  }

  if (createdId) {
    console.log('[5] GET /api/nas/media/:id ...');
    try {
      const res = await fetch(
        `${BACKEND_URL}/api/nas/media/${encodeURIComponent(createdId)}?include=metadata`,
        { headers: { Authorization: `Bearer ${connectionToken}` } }
      );
      if (!res.ok) throw new Error(`HTTP ${res.status}`);
      const data = await res.json();
      console.log(`    filename=${data.filename}, byteLength=${data.byteLength}\n`);
    } catch (err) {
      console.log(`    Failed: ${err.message}\n`);
    }

    console.log('[6] DELETE /api/nas/media/:id ...');
    try {
      const res = await fetch(`${BACKEND_URL}/api/nas/media/${encodeURIComponent(createdId)}`, {
        method: 'DELETE',
        headers: { Authorization: `Bearer ${connectionToken}` },
      });
      if (!res.ok && res.status !== 204) throw new Error(`HTTP ${res.status}`);
      console.log('    Deleted.\n');
    } catch (err) {
      console.log(`    Failed: ${err.message}\n`);
    }
  }

  console.log('[7] DELETE /api/nas/sessions/current ...');
  try {
    const res = await fetch(`${BACKEND_URL}/api/nas/sessions/current`, {
      method: 'DELETE',
      headers: { Authorization: `Bearer ${connectionToken}` },
    });
    if (!res.ok) throw new Error(`HTTP ${res.status}`);
    const data = await res.json();
    console.log(`    ${data.message}\n`);
  } catch (err) {
    console.log(`    Failed: ${err.message}\n`);
  }

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

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