server.js

import Fastify from 'fastify';
import fastifyMongodb from '@fastify/mongodb';
import swagger from '@fastify/swagger';
import swaggerUI from '@fastify/swagger-ui';
import userRouter from './src/routes/user.js';

const fastify = Fastify({
  logger: true,
});

/**
 * Swagger (OpenAPI) setup
 */
await fastify.register(swagger, {
  openapi: {
    info: {
      title: 'Learning Fastify API',
      description: 'Fastify + MongoDB learning project',
      version: '1.0.0',
    },
  },
});

await fastify.register(swaggerUI, {
  routePrefix: '/docs',
});

/**
 * MongoDB connection
 */
fastify.register(fastifyMongodb, {
  forceClose: true,
  url: process.env.MONGODB_URI || 'mongodb://localhost:27017/learning_fastify',
});

/**
 * Root route
 */
fastify.get('/', async () => {
  return { message: 'Welcome To Auth Service!' };
});

/**
 * Register routes
 */
fastify.register(userRouter);

/**
 * Start server
 */
const startServer = async () => {
  const PORT = process.env.PORT || 3000;

  try {
    await fastify.listen({ port: PORT });
    fastify.log.info(`Server running on port ${PORT}`);
    fastify.log.info(`Swagger docs at http://localhost:${PORT}/docs`);
  } catch (err) {
    fastify.log.error(err);
    process.exit(1);
  }
};

startServer();