Set up a GQL client package (#19)

* Set up GQL client package

* Add client method to get user

---------

Co-authored-by: neeraj <neeraj.rtly@gmail.com>

packages/gql-client/src/gql-client.ts

@@ -0,0 +1,26 @@
+import { ApolloClient, InMemoryCache, NormalizedCacheObject } from '@apollo/client';
+
+import { getUser } from './gql-queries';
+
+export interface GraphQLConfig {
+  gqlEndpoint: string;
+}
+
+export class GQLClient {
+  private client: ApolloClient<NormalizedCacheObject>;
+
+  constructor (config: GraphQLConfig) {
+    this.client = new ApolloClient({
+      uri: config.gqlEndpoint,
+      cache: new InMemoryCache()
+    });
+  }
+
+  async getUser () : Promise<any> {
+    const { data } = await this.client.query({
+      query: getUser
+    });
+
+    return data;
+  }
+}

packages/gql-client/src/gql-queries.ts

@@ -0,0 +1,13 @@
+import { gql } from '@apollo/client';
+
+export const getUser = gql`
+query {
+  user {
+    id
+    name
+    email
+    createdAt
+    updatedAt
+  }
+}
+`;