app.use(async ctx => {
  ctx; // is the Context
  ctx.request; // is a Koa Request
  ctx.response; // is a Koa Response
});

const Koa = require('koa')
const rTracer = require('cls-rtracer')

const app = new Koa()
// any third party middleware that does not need access to request ids goes here
// ...

app.use(rTracer.koaMiddleware())
// optionally, you can override default middleware config:
// app.use(rTracer.koaMiddleware({
//   useHeader: true,
//   headerName: 'X-Your-Request-Header'
// }))

// all code in middlewares, starting from here, has access to request ids

var Koa = require('koa');
var bodyParser = require('koa-bodyparser');
 
var app = new Koa();
app.use(bodyParser());
 
app.use(async ctx => {
  // the parsed body will store in ctx.request.body
// the parsed body will store in ctx.request.body
  // if nothing was parsed, body will be an empty object {}
// if nothing was parsed, body will be an empty object {}
  ctx.body = ctx.request.body;
});

import { ApolloServer } from 'apollo-server-koa';
import { ApolloServerPluginDrainHttpServer } from 'apollo-server-core';
import Koa from 'koa';
import http from 'http';

async function startApolloServer(typeDefs, resolvers) {
  const httpServer = http.createServer();
  const server = new ApolloServer({
    typeDefs,
    resolvers,
    plugins: [ApolloServerPluginDrainHttpServer({ httpServer })],
  });

  await server.start();
  const app = new Koa();
  server.applyMiddleware({ app });
  httpServer.on('request', app.callback());
  await new Promise<void>(resolve => httpServer.listen({ port: 4000 }, resolve));
  console.log(`🚀 Server ready at http://localhost:4000${server.graphqlPath}`);
  return { server, app };
}

import * as MediaLibrary from 'expo-media-library';
import * as FileSystem from 'expo-file-system';
const { StorageAccessFramework } = FileSystem;

async function migrateAlbum(albumName: string) {
  // Gets SAF URI to the album
  const albumUri = StorageAccessFramework.getUriForDirectoryInRoot(albumName);

  // Requests permissions
  const permissions = await StorageAccessFramework.requestDirectoryPermissionsAsync(albumUri);
  if (!permissions.granted) {
    return;
  }

  const permittedUri = permissions.directoryUri;
  // Checks if users selected the correct folder
  if (!permittedUri.includes(albumName)) {
    return;
  }

  const mediaLibraryPermissions = await MediaLibrary.requestPermissionsAsync();
  if (!mediaLibraryPermissions.granted) {
    return;
  }

  // Moves files from external storage to internal storage
  await StorageAccessFramework.moveAsync({
    from: permittedUri,
    to: FileSystem.documentDirectory!,
  });

  const outputDir = FileSystem.documentDirectory! + albumName;
  const migratedFiles = await FileSystem.readDirectoryAsync(outputDir);

  // Creates assets from local files
  const [newAlbumCreator, ...assets] = await Promise.all(
    migratedFiles.map<Promise<MediaLibrary.Asset>>(
      async fileName => await MediaLibrary.createAssetAsync(outputDir + '/' + fileName)
    )
  );

  // Album was empty
  if (!newAlbumCreator) {
    return;
  }

  // Creates a new album in the scoped directory
  const newAlbum = await MediaLibrary.createAlbumAsync(albumName, newAlbumCreator, false);
  if (assets.length) {
    await MediaLibrary.addAssetsToAlbumAsync(assets, newAlbum, false);
  }
}