import { graphqlHTTP } from "./express-graphql";
import { ExecutionArgs, ExecutionResult, DocumentNode, GraphQLSchema } from "graphql";
import { MSeriesServer } from "./mSeriesServer";
import path from "path";
import { express as voyagerMiddleware } from 'graphql-voyager/middleware';


const express = require('express');
const app = express();
const cors = require('cors')

const MyGraphQLDummySchema = new GraphQLSchema({});

let mSeriesDevServer = new MSeriesServer();

function getGqlString(doc: DocumentNode) {
    return doc.loc && doc.loc.source.body;
}

const pjson = require('../package.json');

app.use(cors())
app.use(
    '/graphql',
    graphqlHTTP({
        schema: MyGraphQLDummySchema,
        graphiql: true,
        customExecuteFn: async (args: ExecutionArgs) => {
            const str = getGqlString(args.document)!;
            const result = await mSeriesDevServer.sendMessage(str) as ExecutionResult;
            return result
        }
    }),
);

app.get('/ping', (req: any, res: any) => {
    return res.send('pong');
});

app.get('/voyager1', (req: any, res: any) => {
    res.sendFile(path.join(__dirname, '../', 'web', 'voyager.html'));
});


app.use('/voyager', voyagerMiddleware({ endpointUrl: '/graphql' }));

app.listen(3001);

const PORT = 4000;
console.log(`Version: ${pjson.version} - Start Listen on web browser on port ${PORT} - http://localhost:${PORT}/graphql`);
app.listen(PORT);