Merge pull request #1 from anthonypena97/develop

Feature/1/Created Express Server and GraphQL Schema with UserType, HobbyType, and PostType + dummy data

Author: anthonypena97

server/app.js

@@ -1,7 +1,19 @@
 const express = require('express');
+const {graphqlHTTP} = require('express-graphql');
+
+const schema = require('./schema/schema');
 
 const app = express();
+
+// Middleware
+app.use('/graphql', graphqlHTTP({
+  schema: schema,
+  graphiql: true,
+  pretty: true,
+}));
+
+const PORT = 4000;
 
-app.listen(4000, ()=>{
-  console.log("Listening for requests on port 4000");
+app.listen(PORT, ()=>{
+  console.log(`Listening for requests on port ${PORT}`);
 });

server/package-lock.json

@@ -9,6 +9,9 @@
   "author": "anthonypena97",
   "license": "ISC",
   "dependencies": {
-    "express": "^4.18.1"
+    "express": "^4.18.1",
+    "express-graphql": "^0.12.0",
+    "graphql": "^16.5.0",
+    "lodash": "^4.17.21"
   }
 }

server/package.json

@@ -0,0 +1,131 @@
+const {GraphQLObjectType, GraphQLID, GraphQLString, GraphQLInt, GraphQLSchema, GraphQLBoolean, GraphQLList} = require('graphql');
+var _ = require('lodash');
+
+// dummy data
+var userData = [
+  {id: '1', name: 'Bond', age: 36, profession: 'Programmer',},
+  {id: '13', name: 'Anna', age: 26, profession: 'Baker',},
+  {id: '211', name: 'Bella', age: 16, profession: 'Mechanic',},
+  {id: '19', name: 'Gina', age: 26, profession: 'Painter',},
+  {id: '150', name: 'Georgina', age: 36, profession: 'Teacher'},
+];
+
+var hobbyData = [
+  {id: '1', title: 'Programming', description: 'Using computers to make the world a better place', userId: '150',},
+  {id: '2', title: 'Rowing', description: 'Sweat and feel better before eating donoughts', userId: '19',},
+  {id: '3', title: 'Swimming', description: 'Get in the ware and learn to become the water', userId: '1',},
+  {id: '4', title: 'Fencing', description: 'A hobby for fency people', userId: '150',},
+  {id: '5', title: 'Programming', description: 'Wear hiking boots and explore the world', userId: '1',},
+];
+
+var postData = [
+  {id: '1', comment: 'Building a Mind', userId: '1'},
+  {id: '2', comment: 'GraphQL is Amazing', userId: '1'},
+  {id: '3', comment: 'How to Change the World', userId: '19'},
+  {id: '4', comment: 'How to Change the World', userId: '211'},
+  {id: '5', comment: 'How to Change the World', userId: '1'},
+];
+
+// create types
+const UserType = new GraphQLObjectType({
+  name: 'User',
+  description: 'Documentation for user...',
+  fields: () => ({
+    id: {type: GraphQLString},
+    name: {type: GraphQLString},
+    age: {type: GraphQLInt},
+    profession: {type: GraphQLString},
+    
+    posts:{
+      type: new GraphQLList(PostType),
+      resolve(parent, args){
+        return _.filter(postData, {userId: parent.id});
+      }
+    },
+    
+    hobbies:{
+      type: new GraphQLList(HobbyType),
+      resolve(parent, args){
+        return _.filter(hobbyData, {userId: parent.id});
+      }
+    }
+  })
+});
+
+const HobbyType = new GraphQLObjectType({
+  name: 'Hobby',
+  description: 'Hobby Description',
+  fields: () => ({
+    id: {type: GraphQLID},
+    title: {type: GraphQLString},
+    description: {type: GraphQLString},
+    user: {
+      type: UserType,
+      resolve(parent, args){
+        return _.find(userData, {id: parent.userId});
+      }
+    },
+  })
+});
+
+const PostType = new GraphQLObjectType({
+  name: 'Post',
+  description: 'Post description',
+  fields: () => ({
+    id: {type: GraphQLID},
+    comment: {type: GraphQLString},
+    user: {
+      type: UserType,
+      resolve(parent, args){
+        return _.find(userData, {id: parent.userId});
+      }
+    },
+  })
+});
+
+// RootQuery
+const RootQuery = new GraphQLObjectType({
+  name: 'RootQueryType',
+  description: 'Description',
+  fields: {
+    user:{
+      type: UserType,
+      args: {id: {type: GraphQLString}},
+      
+      resolve(parent, args){
+       
+        return _.find(userData, {id: args.id});
+        
+      }
+    },
+    
+    hobby:{
+      type: HobbyType,
+      args: {id: {type: GraphQLID}},
+      
+      resolve(parent, args){
+        
+        return _.find(hobbyData, {id: args.id});
+        
+      }
+    },
+    
+    post:{
+      type: PostType,
+      args: {id: {type: GraphQLID}},
+      
+      resolve(parent, args){
+        
+        return _.find(postData, {id: args.id});
+        
+      }
+    },
+    
+  }
+});
+
+const schema = new GraphQLSchema({
+  query: RootQuery
+})
+
+module.exports = schema;