Codesphere GraphQL server demo

graphql_server_demo.js

import express from "express";
import { graphqlHTTP } from "express-graphql";
import { buildSchema } from "graphql";

//Images data

const imagesData = [
  {
    id: 1,
    title: "Stacked Brwonies",
    owner: "Ella Olson",
    category: "Desserts",
    url: "https://images.pexels.com/photos/3026804/pexels-photo-3026804.jpeg",
  },
  {
    id: 2,
    title: "Shallow focus photography of Cafe Latte",
    owner: "Kevin Menajang",
    category: "Coffee",
    url: "https://images.pexels.com/photos/982612/pexels-photo-982612.jpeg",
  },
  {
    id: 3,
    title: "Sliced Cake on White Saucer",
    owner: "Quang Nguyen Vinh",
    category: "Desserts",
    url: "https://images.pexels.com/photos/2144112/pexels-photo-2144112.jpeg",
  },
  {
    id: 4,
    title: "Beverage breakfast brewed coffee caffeine",
    owner: "Burst",
    category: "Coffee",
    url: "https://images.pexels.com/photos/374885/pexels-photo-374885.jpeg",
  },
  {
    id: 5,
    title: "Pancake with Sliced Strawberry",
    owner: "Ash",
    category: "Desserts",
    url: "https://images.pexels.com/photos/376464/pexels-photo-376464.jpeg",
  },
];

// GraphQL Schema
const schema = buildSchema(`
      type Query {
        image(id: Int!): Image
        images(category: String): [Image]
      }

      type Image {
        id: Int
        title: String
        category: String
        owner: String
        url: String
      }
`);

// Get single Image using id

function getImage(args) {
  for (const image of imagesData) {
    if (image.id === args.id) {
      return image;
    }
  }
}

//Get images using category

function getImages(args) {
  if (args.category) {
    return imagesData.filter(
      (image) => image.category.toLowerCase() === args.category.toLowerCase()
    );
  } else {
    return imagesData;
  }
}

// Resolver
const root = {
  image: getImage,
  images: getImages,
};

//Create an express server and GraphQL endpoint
const app = express();
app.use(
  "/graphql",
  graphqlHTTP({
    schema: schema,
    rootValue: root,
    graphiql: true,
  })
);

//Listening to our server
app.listen(5000, () => {
  console.log("GraphQL server with Express running on localhost:5000/graphql");
});