rework PR comment

federation/src/server/context.ts

@@ -1,51 +0,0 @@
-import { Role } from '@/auth/Role'
-import { User as dbUser } from '@entity/User'
-import { Transaction as dbTransaction } from '@entity/Transaction'
-import Decimal from 'decimal.js-light'
-import { ExpressContext } from 'apollo-server-express'
-
-export interface Context {
-  token: string | null
-  setHeaders: { key: string; value: string }[]
-  role?: Role
-  user?: dbUser
-  clientTimezoneOffset?: number
-  // hack to use less DB calls for Balance Resolver
-  lastTransaction?: dbTransaction
-  transactionCount?: number
-  linkCount?: number
-  sumHoldAvailableAmount?: Decimal
-}
-
-const context = (args: ExpressContext): Context => {
-  const authorization = args.req.headers.authorization
-  const clientTimezoneOffset = args.req.headers.clienttimezoneoffset
-  const context: Context = {
-    token: null,
-    setHeaders: [],
-  }
-  if (authorization) {
-    context.token = authorization.replace(/^Bearer /, '')
-  }
-  if (clientTimezoneOffset && typeof clientTimezoneOffset === 'string') {
-    context.clientTimezoneOffset = Number(clientTimezoneOffset)
-  }
-  return context
-}
-
-export const getUser = (context: Context): dbUser => {
-  if (context.user) return context.user
-  throw new Error('No user given in context!')
-}
-
-export const getClientTimezoneOffset = (context: Context): number => {
-  if (
-    (context.clientTimezoneOffset || context.clientTimezoneOffset === 0) &&
-    Math.abs(context.clientTimezoneOffset) <= 27 * 60
-  ) {
-    return context.clientTimezoneOffset
-  }
-  throw new Error('No valid client time zone offset in context!')
-}
-
-export default context