const {
  ApolloServer,
  // ForbiddenError,
  // UserInputError,
  // AuthenticationError,
  // ApolloError,
} = require('@apollo/server')

// const {
//   ApolloServerPluginDrainHttpServer,
// } = require('@apollo/server/plugin/drainHttpServer')

// const isEmpty = require('lodash/isEmpty')
// const config = require('config')

// const errors = require('./errors')
// const logger = require('./logger')
const schema = require('./graphqlSchema')

const createGraphQLServer = testUserContext => {
  if (process.env.NODE_ENV !== 'test' && testUserContext) {
    throw new Error(
      'Do not pass a test user context unless you are running a test suite',
    )
  }

  const serverConfig = {
    uploads: false,
    schema,
    // need to refactor to have access to subscription server / http server here
    // plugins: [
    //   {
    //     async serverWillStart() {
    //       return {
    //         async drainServer() {
    //           subscriptionServer.close()
    //         },
    //       }
    //     },
    //   },
    // ],
    // plugins: [ApolloServerPluginDrainHttpServer({ httpServer })],
    // formatError: err => {
    //   const error = isEmpty(err.originalError) ? err : err.originalError

    //   logger.error(error.message, { error })

    //   const isPubsweetDefinedError = Object.values(errors).some(
    //     pubsweetError => error instanceof pubsweetError,
    //   )

    //   const isGraphqlDefinedError = [
    //     ForbiddenError,
    //     UserInputError,
    //     AuthenticationError,
    //     ApolloError,
    //   ].some(graphqlError => error instanceof graphqlError)

    //   // err is always a GraphQLError which should be passed to the client
    //   if (
    //     !isEmpty(err.originalError) &&
    //     !isPubsweetDefinedError &&
    //     !isGraphqlDefinedError
    //   )
    //     return {
    //       name: 'Server Error',
    //       message: 'Something went wrong! Please contact your administrator',
    //     }

    //   if (isGraphqlDefinedError) return error

    //   return {
    //     name: error.name || 'GraphQLError',
    //     message: error.message,
    //     extensions: {
    //       code: err.extensions.code,
    //     },
    //   }
    // },
    introspection: process.env.NODE_ENV === 'development',
    csrfPrevention: true,
  }

  return new ApolloServer(serverConfig)
}

module.exports = createGraphQLServer