Ocelot-Social/backend/src/index.ts

import CONFIG from './config'
import { loggerPlugin } from './plugins/apolloLogger'
import createProxy from './proxy'
import createServer from './server'

async function main() {
  const { httpServer } = await createServer({
    plugins: [loggerPlugin],
  })
  const url = new URL(CONFIG.GRAPHQL_URI)
  httpServer.listen({ port: url.port }, () => {
    /* eslint-disable-next-line no-console */
    console.log(`🚀 Server ready at http://localhost:${url.port}/`)
    /* eslint-disable-next-line no-console */
    console.log(`🚀 Subscriptions ready at ws://localhost:${url.port}/`)
  })

  if (CONFIG.PROXY_S3) {
    /*
    In a Docker environment, the `AWS_ENDPOINT` of the backend container would be `http://minio:9000` but this domain is not reachable from the Docker host.
    Therefore, we forward the local port 9000 to "http://minio:9000." The backend can upload files to its own proxy `http://localhost:9000` and the returned file location is going to be accessible from the web frontend.
    This behavior is only required in local development, not in production. Therefore, we put it behind a `CONFIG.PROXY_S3` feature flag.
    */
    const target = new URL(CONFIG.PROXY_S3)
    const proxy = createProxy(target)
    const forwardedPort = target.port // target port and forwarded port must be the same
    proxy.listen(forwardedPort, () => {
      /* eslint-disable-next-line no-console */
      console.log(`Simple HTTP proxy listening on port ${forwardedPort}`)
      /* eslint-disable-next-line no-console */
      console.log(`Proxying requests to ${target}`)
    })
  }
}

// eslint-disable-next-line promise/prefer-await-to-callbacks, @typescript-eslint/use-unknown-in-catch-callback-variable
main().catch((err) => {
  /* eslint-disable-next-line no-console */
  console.error('Failed to start server:', err)
  process.exit(1)
})