import express from 'express';
import { graphqlHTTP } from 'express-graphql';
import { readFileSync } from 'fs';
import { createServer } from 'https';
import crypto from 'node:crypto';
import { join } from 'path';

import { basicAuthRouter } from './basic-auth';
import githubApi from './github-api';
import gitlabApi from './gitlab-api';
import { root, schema } from './graphql';
import { startGRPCServer } from './grpc';
import { oauthRoutes } from './oauth';
import { startWebSocketServer } from './websocket';

const app = express();
const port = 4010;
const httpsPort = 4011;
const grpcPort = 50051;

app.get('/pets/:id', (req, res) => {
  res.status(200).send({ id: req.params.id });
});

app.get('/sleep', (_req, res) => {
  res.status(200).send({ sleep: true });
});

app.get('/cookies', (_req, res) => {
  res
    .status(200)
    .header('content-type', 'text/plain')
    .cookie('insomnia-test-cookie', 'value123')
    .send(`${_req.headers['cookie']}`);
});

app.use('/file', express.static('fixtures/files'));
app.use('/auth/basic', basicAuthRouter);

githubApi(app);
gitlabApi(app);

app.get('/delay/seconds/:duration', (req, res) => {
  const delaySec = Number.parseInt(req.params.duration || '2');
  setTimeout(function() {
    res.send(`Delayed by ${delaySec} seconds`);
  }, delaySec * 1000);
});

app.use('/oidc', oauthRoutes(port));

app.get('/', (_req, res) => {
  res.status(200).send();
});

app.use('/graphql', graphqlHTTP({
  schema: schema,
  rootValue: root,
  graphiql: true,
}));
app.use(express.json()); // Used to parse JSON bodies

// SSE routes
let subscribers: { id: string; response: express.Response }[] = [];
app.get('/events', (request, response) => {
  const headers = {
    'Content-Type': 'text/event-stream',
    'Connection': 'keep-alive',
    'Cache-Control': 'no-cache',
  };
  response.writeHead(200, headers);
  const subscriberId = crypto.randomUUID();
  const data = `data: ${JSON.stringify({ id: subscriberId })}\n\n`;
  response.write(data);
  const subscriber = {
    id: subscriberId,
    response,
  };
  subscribers.push(subscriber);
  request.on('close', () => {
    console.log(`${subscriberId} Connection closed`);
    subscribers = subscribers.filter(sub => sub.id !== subscriberId);
  });
});
app.post('/send-event', (request, response) => {
  // Requires middleware to parse JSON body
  console.log('Received event', request.body);
  subscribers.forEach(subscriber => subscriber.response.write(`data: ${JSON.stringify(request.body)}\n\n`));
  response.json({ success: true });
});

startWebSocketServer(app.listen(port, () => {
  console.log(`Listening at http://localhost:${port}`);
  console.log(`Listening at ws://localhost:${port}`);
}));

startWebSocketServer(createServer({
  cert: readFileSync(join(__dirname, '../fixtures/certificates/localhost.pem')),
  ca: readFileSync(join(__dirname, '../fixtures/certificates/rootCA.pem')),
  key: readFileSync(join(__dirname, '../fixtures/certificates/localhost-key.pem')),
  // Only allow connections using valid client certificates
  requestCert: true,
  rejectUnauthorized: true,
}, app).listen(httpsPort, () => {
  console.log(`Listening at https://localhost:${httpsPort}`);
  console.log(`Listening at wss://localhost:${httpsPort}`);
}));

startGRPCServer(grpcPort);