Development of log-vwer Toolkit for Node.js

// Import the necessary tools
const express = require('express');
const { setupLogger, viewerMiddleware } = require('log-vwer');

// Create your Express app
const app = express();
const PORT = process.env.PORT || 3000;

// This is an async function to make sure we connect to the database *before* starting the server.
async function startServer() {
  try {
    // === Part 1: Set up the logger ===
    // This tells log-vwer how to work.
    // We're choosing MongoDB here, but you can also choose 'file' or 'memory'.
    const logger = await setupLogger({
      serviceName: 'My Awesome E-Commerce App',
      store: 'mongodb',
      mongoUrl: 'mongodb://localhost:27017/my_app_logs',
    });

    // === Part 2: Activate the dashboard ===
    // This tells your app: "When someone goes to /_logs, first check the password, then show the log dashboard."
    app.use('/_logs', myAuthMiddleware, viewerMiddleware(logger));

    // === Part 3: Start using your new logger! ===
    // Now, instead of console.log, use logger.info, logger.error, etc.
    app.get('/', (req, res) => {
      logger.info('A user visited the homepage!', { 
        ipAddress: req.ip,
        browser: req.get('User-Agent'),
      });
      res.send('Welcome! Your visit has been logged. Check it at /_logs');
    });

    app.get('/error-test', (req, res) => {
      try {
        // Let's pretend something broke
        throw new Error('The payment gateway is offline!');
      } catch (error) {
        logger.error('CRITICAL: Payment gateway failed!', { 
          errorMessage: error.message,
          errorCode: 'PG-503',
        });
        res.status(500).send('Oh no! Something broke. The error has been logged.');
      }
    });

    // Start your server only after everything is ready
    app.listen(PORT, () => {
      logger.warn(`Server is alive on port ${PORT}. Ready to rock!`);
      console.log(`Log dashboard is live at: http://localhost:${PORT}/_logs`);
    });

  } catch (error) {
    // If the database connection fails, the server won't start.
    console.error("🔴 FATAL ERROR: Could not start server. Is your database running?", error);
    process.exit(1);
  }
}

// Run the function to start the server!
startServer();

const passport = require('passport'); // Let's assume you've already set up Passport.js

// This tells the app: "For the /_logs page, first make sure the user is logged in with a valid token.
// If they are, then show them the log dashboard."
app.use(
  '/_logs',
  passport.authenticate('jwt', { session: false }),
  viewerMiddleware(logger)
);