refactor: Use graphql schema directly with graphql-tools library

packages/backend/src/graphql/mutations/verify-connection.ts

@@ -1,17 +1,16 @@
-import { GraphQLString, GraphQLNonNull } from 'graphql';
-import connectionType from '../types/connection';
-import RequestWithCurrentUser from '../../types/express/request-with-current-user';
+import Context from '../../types/express/context';
 import App from '../../models/app';
 
 type Params = {
   id: string;
 };
 
-const verifyConnectionResolver = async (
+const verifyConnection = async (
+  _parent: unknown,
   params: Params,
-  req: RequestWithCurrentUser
+  context: Context
 ) => {
-  let connection = await req.currentUser
+  let connection = await context.currentUser
     .$relatedQuery('connections')
     .findOne({
       id: params.id,
@@ -36,13 +35,4 @@ const verifyConnectionResolver = async (
   return connection;
 };
 
-const verifyConnection = {
-  type: connectionType,
-  args: {
-    id: { type: GraphQLNonNull(GraphQLString) },
-  },
-  resolve: (_: any, params: Params, req: RequestWithCurrentUser) =>
-    verifyConnectionResolver(params, req),
-};
-
 export default verifyConnection;