chore: Adjust create step mutation to work with flows

packages/backend/src/graphql/mutations/create-step.ts

@@ -1,9 +1,11 @@
 import { GraphQLString, GraphQLNonNull, GraphQLInt, GraphQLEnumType } from 'graphql';
 import Step from '../../models/step';
+import Flow from '../../models/flow';
 import stepType from '../types/step';
 import RequestWithCurrentUser from '../../types/express/request-with-current-user';
 
 type Params = {
+  flowId: number,
   key: string,
   appKey: string,
   type: string
@@ -11,7 +13,13 @@ type Params = {
 }
 
 const createStepResolver = async (params: Params, req: RequestWithCurrentUser) => {
+  const flow = await Flow.query().findOne({
+    id: params.flowId,
+    user_id: req.currentUser.id
+  })
+
   const step = await Step.query().insertAndFetch({
+    flowId: flow.id,
     key: params.key,
     appKey: params.appKey,
     type: params.type,
@@ -24,6 +32,7 @@ const createStepResolver = async (params: Params, req: RequestWithCurrentUser) =
 const createStep = {
   type: stepType,
   args: {
+    flowId: { type: GraphQLNonNull(GraphQLString) },
     key: { type: GraphQLNonNull(GraphQLString) },
     appKey: { type: GraphQLNonNull(GraphQLString) },
     type: {