Add yarn db:reset script

README.md

@@ -99,7 +99,7 @@ you build a frontend application without running a neo4j instance.
 
 Just set `MOCK=true` inside `.env` or pass it on application start.
 
-## Seeding The Database
+## Seeding and Unseeding The Database
 
 Optionally you can seed the GraphQL service by executing mutations that 
 will write sample data to the database:
@@ -110,6 +110,14 @@ yarn db:seed
 npm run db:seed
 ```
 
+For a reset you can use the reset script:
+
+```bash
+yarn db:reset
+# -or-
+npm run db:reset
+```
+
 ## Todo`s
 
 - [x] add jwt authentication

package.json

@@ -7,7 +7,8 @@
     "test": "echo \"Error: no test specified\" && exit 0",
     "start": "./node_modules/.bin/nodemon --exec babel-node src/index.js",
     "start:debug": "./node_modules/.bin/nodemon --exec babel-node --inspect=0.0.0.0:9229 src/index.js",
-    "db:seed": "concurrently --kill-others --success first 'cross-env GRAPHQL_URI=http://localhost:4001 PERMISSIONS=disabled GRAPHQL_PORT=4001 yarn run start' 'wait-on tcp:4001 && cross-env GRAPHQL_URI=http://localhost:4001 ./node_modules/.bin/babel-node src/seed/seed-db.js'"
+    "db:seed": "concurrently --kill-others --success first 'cross-env GRAPHQL_URI=http://localhost:4001 PERMISSIONS=disabled GRAPHQL_PORT=4001 yarn run start' 'wait-on tcp:4001 && cross-env GRAPHQL_URI=http://localhost:4001 ./node_modules/.bin/babel-node src/seed/seed-db.js'",
+    "db:reset": "concurrently --kill-others --success first 'cross-env GRAPHQL_URI=http://localhost:4001 PERMISSIONS=disabled GRAPHQL_PORT=4001 yarn run start' 'wait-on tcp:4001 && cross-env GRAPHQL_URI=http://localhost:4001 ./node_modules/.bin/babel-node src/seed/unseed-db.js'"
   },
   "author": "Human Connection gGmbH",
   "license": "MIT",

src/graphql-schema.js

@@ -10,7 +10,7 @@ export const typeDefs =
   fs.readFileSync(process.env.GRAPHQL_SCHEMA || path.join(__dirname, "schema.graphql"))
     .toString('utf-8')
 
-const query = (cypher, session) => {
+export const query = (cypher, session) => {
   return new Promise((resolve, reject) => {
     let data = []
     session

src/seed/unseed-db.js

@@ -0,0 +1,23 @@
+import { query } from '../graphql-schema'
+import dotenv from 'dotenv'
+import neo4j from '../bootstrap/neo4j'
+
+dotenv.config()
+
+if (process.env.NODE_ENV === 'production') {
+    throw new Error('YOU CAN`T UNSEED IN PRODUCTION MODE')
+}
+
+const driver = neo4j().getDriver()
+const session = driver.session()
+
+query('MATCH (n) DETACH DELETE n', session).then(() => {
+    console.log('Successfully deleted all nodes and relations!')
+}).catch((err) => {
+    console.log(`Error occurred deleting the nodes and relations (reset the db)\n\n${err}`)
+}).finally(() => {
+    if (session) {
+        session.close()
+    }
+    process.exit(0)
+})