const { listLogChannels, getLogTail } = require('../../../infrastructure/log-files');

async function handleLogsRoutes(req, res) {
  const urlPath = req.urlPath;
  const method = req.method;

  if (method === 'GET' && urlPath === '/api/logs') {
    res.writeHead(200, { 'Content-Type': 'application/json' });
    res.end(JSON.stringify({ channels: listLogChannels() }));
    return true;
  }

  const match = urlPath.match(/^\/api\/logs\/([a-zA-Z]+)$/);
  if (method === 'GET' && match) {
    const channelId = match[1];
    const channels = listLogChannels();
    if (!channels.some((c) => c.id === channelId)) {
      res.writeHead(404, { 'Content-Type': 'application/json' });
      res.end(JSON.stringify({ error: 'Unknown log channel' }));
      return true;
    }
    const url = new URL(req.url, `https://${req.headers.host}`);
    const lines = Math.min(parseInt(url.searchParams.get('lines') || '500', 10), 5000);
    const tail = getLogTail(channelId, lines);
    res.writeHead(200, { 'Content-Type': 'application/json' });
    res.end(JSON.stringify({ channel: channelId, lines: tail }));
    return true;
  }

  return false;
}

module.exports = { handleLogsRoutes };