initial

Author: azizkale

.gitignore

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+node_modules

index.js

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+import { GraphQLServer } from "graphql-yoga";
+
+const Users = [
+  {
+    id: 1,
+    username: "john",
+    city: "Melbourne",
+  },
+  {
+    id: 2,
+    username: "mseven",
+    city: "Istanbul",
+  },
+  {
+    id: 3,
+    username: "maria",
+    city: "Zagreb",
+  },
+];
+const Posts = [
+  {
+    id: 1,
+    title:
+      "Lorem Ipsum is simply dummy text of the printing and typesetting industry.",
+    userId: 1,
+  },
+  {
+    id: 2,
+    title:
+      "Lorem Ipsum je jednostavno probni tekst koji se koristi u tiskarskoj i slovoslagarskoj industriji.",
+    userId: 3,
+  },
+  {
+    id: 3,
+    title:
+      "Lorem Ipsum, dizgi ve baskı endüstrisinde kullanılan mıgır metinlerdir.",
+    userId: 2,
+  },
+  {
+    id: 4,
+    title:
+      "Lorem Ipsum, dizgi ve baskı endüstrisinde kullanılan mıgır metinlerdir22222.",
+    userId: 1,
+  },
+];
+
+const typeDefs = `
+ type Query {
+    hello: String
+    users: [User!]!
+    posts: [Post!]!
+    user(id: ID!): User!
+    post(id:ID!): Post!   
+ }
+
+ type Mutation{
+    addUser(id:ID!, username:String!, city:String! ): User
+  }
+
+ type User{
+    id: ID!
+    username: String!
+    city: String
+    posts: [Post!]
+}
+
+type Post{
+    id: ID!
+    title: String!
+    userId: ID!
+    user: User!
+}  
+`;
+const resolvers = {
+  Query: {
+    user: (parent, args) => Users.find((user) => String(user.id) === args.id),
+    users: (parent, args) => Users,
+
+    post: (parent, args) => Posts.find((post) => String(post.id) === args.id),
+    posts: (parent, args) => Posts,
+  },
+  Post: {
+    user: (parent, args) => Users.find((user) => user.id === parent.userId),
+  },
+  User: {
+    posts: (parent, args) => Posts.filter((post) => parent.id === post.userId),
+  },
+  Mutation: {
+    addUser: (_, { id, username, city }) => {
+      const newUser = {
+        id: id,
+        username: username,
+        city: city,
+      };
+      Users.push(newUser);
+      return newUser;
+    },
+  },
+};
+
+const server = new GraphQLServer({ typeDefs, resolvers });
+
+server.start({ port: 4001 }, () =>
+  console.log("Server is running on localhost:4001")
+);