Change API: create/relate

Separating the relations from mere properties removes boilerplate code.

src/seed/factories/index.js

@@ -25,16 +25,30 @@ const builders = {
   'tag': require('./tags.js').default
 }
 
+const relationBuilders = {
+  'user': require('./users.js').relate
+}
+
 const buildMutation = (model, parameters) => {
   return builders[model](parameters)
 }
 
+const buildRelationMutation = (model, type, parameters) => {
+  return relationBuilders[model](type, parameters)
+}
+
 const create = (model, parameters, options) => {
   const graphQLClient = new GraphQLClient(seedServerHost, options)
   const mutation = buildMutation(model, parameters)
   return graphQLClient.request(mutation)
 }
 
+const relate = (model, type, parameters, options) => {
+  const graphQLClient = new GraphQLClient(seedServerHost, options)
+  const mutation = buildRelationMutation(model, type, parameters)
+  return graphQLClient.request(mutation)
+}
+
 const cleanDatabase = async () => {
   const session = driver.session()
   const cypher = 'MATCH (n) OPTIONAL MATCH (n)-[r]-() DELETE n,r'
@@ -50,7 +64,9 @@ const cleanDatabase = async () => {
 export {
   driver,
   apolloClient,
-  create,
   buildMutation,
+  buildRelationMutation,
+  create,
+  relate,
   cleanDatabase
 }

src/seed/factories/users.js

@@ -1,6 +1,6 @@
 import faker from 'faker'
 
-export default function (params) {
+export default function create (params) {
   const {
     id = `u${faker.random.number()}`,
     name = faker.name.findName(),
@@ -65,3 +65,18 @@ export default function (params) {
     }
   `
 }
+
+export function relate(type, params) {
+  switch(type){
+    case 'friends':
+      const { from, to } = params
+      return `
+        mutation {
+          ${from}_friends_${to}: AddUserFriends(
+            from: { id: "${from}" },
+            to: { id: "${to}" }
+          ) { from { id } }
+        }
+      `
+  }
+}

src/seed/seed-db.js

@@ -1,4 +1,4 @@
-import { create, apolloClient, seedServerHost as host } from './factories'
+import { create, relate, apolloClient, seedServerHost as host } from './factories'
 import { authenticatedHeaders } from '../jest/helpers.js'
 import gql from 'graphql-tag'
 import asyncForEach from '../helpers/asyncForEach'
@@ -26,6 +26,12 @@ import seed from './data'
       create('user', { id: 'u7', name: 'Dagobert', role: 'user', badgeIds: ['b1', 'b2'], blacklistedUserIds: ['u4', 'u5', 'u6'], email: 'dagobert@example.org' })
     ])
 
+    await Promise.all([
+      relate('user', 'friends', { from: 'u1', to: 'u2' }),
+      relate('user', 'friends', { from: 'u1', to: 'u3' }),
+      relate('user', 'friends', { from: 'u2', to: 'u3' })
+    ])
+
     const headers = await Promise.all([
      authenticatedHeaders({ email: 'admin@example.org',     password: '1234' }, host),
      authenticatedHeaders({ email: 'moderator@example.org', password: '1234' }, host),