import { buildSchema } from 'graphql';
import fastify from "fastify";
import hotQL from 'fastify-hotql';

const app = fastify();

// Initialize hotQL
const gql = new hotQL(app, {
  prefix: '/graphql',

  // You can start graphiql by setting this to true
  // PS: The paramaters below are optional
  graphiql: true,
  graphiql_prefix: '/graphql/explore',
  graphiql_endpoint: '/graphql/explore',
});

// Or you can do this later on the fly
gql.startGraphiQL({
  // PS: Both of these are optional
  prefix: '/graphql/explore',
  endpoint: '/graphql/explore',
});

// And for some reason, you can reload the schema and rootValues
// without having to restart the server
gql.reload();

// Start the server
app.listen(80).then(() => {
  console.log(`server listening on http://localhost:80`);
})

// Add a schema and rootValue to the hotQL instance
// You can do this before we start the server or after
const helloWorld = gql.addSchema(buildSchema(`
  type Query {
      hello: String
  }`,
  { hello: () => 'Hello World!' }
);

// You can also remove a schema
helloWorld.remove();

// You can get the hash of the schema
helloWorld.hash();

// You can get the rootValue
helloWorld.rootValue();

// And you can get the schema
helloWorld.schema();