45 lines
2.0 KiB
JavaScript
45 lines
2.0 KiB
JavaScript
const { ApolloServer, gql } = require('apollo-server');
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const resolvers = require('./resolvers');
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const typeDefs = require('./typeDefs');
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// ⚽️ Goal
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// --------
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// We want to create a webapp to reserve products (food).
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// Some ingredients we need: a store, products and reservations.
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// First of all we want a list of stores. After we have chosen
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// a store, we get a list of products (query) of that store.
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// We pick some products, pick a quantity, and we make a reservation (mutation)
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// 🏪 Exercise 2
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// --------------
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// Creating a mutation.
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// 1) Create a type definition for the Mutation `createStore`, to create a store.
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// Create an input type `StoreInput`, and use it as first argument of `createStore`.
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// 2) Create a resolver function for the Mutation `createStore`.
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// 3) Use `yup` in the resolver function to validate the input. (https://github.com/jquense/yup)
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// 4) Create a service layer. Create a file `storeService.js` and put all business
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// logic and data base logic in the service layer.
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// This exercise is focussed on GraphQL but in real-life, middleware will
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// validate if the user is authorized (e.g. check the Authorization header).
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// Afterwards the resolver function will validate the input and call the service layer.
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// 5) Try out the GraphQL mutation in the GraphQL Playground (🚀 http://localhost:4000/)
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// 6) Query the stores, and check if the new store is in the list.
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// 7) Extend the store with an address (street, number, postalCode, city) and create a fragment
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// to query it.
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// In the most basic sense, the ApolloServer can be started
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// by passing type definitions (typeDefs) and the resolvers
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// responsible for fetching the data for those types.
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const server = new ApolloServer({ typeDefs, resolvers });
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// This `listen` method launches a web-server. Existing apps
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// can utilize middleware options.
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server.listen()
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.then(({ url }) => {
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console.log(`🚀 Food GraphQL Server ready at ${url}.
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⛄️ Go to this url to play with GraphQL in the GraphQL Playground.`);
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});
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