'use strict';
const common = require('../common');
const assert = require('assert');

if (!common.hasCrypto) {
  common.skip('missing crypto');
  return;
}

if (!common.opensslCli) {
  common.skip('missing openssl-cli');
  return;
}

const tls = require('tls');

const join = require('path').join;
const net = require('net');
const fs = require('fs');
const spawn = require('child_process').spawn;

const key = fs.readFileSync(join(common.fixturesDir, 'agent.key')).toString();
const cert = fs.readFileSync(join(common.fixturesDir, 'agent.crt')).toString();

function log(a) {
  console.error('***server*** ' + a);
}

const server = net.createServer(common.mustCall(function(socket) {
  log('connection fd=' + socket.fd);
  const sslcontext = tls.createSecureContext({key: key, cert: cert});
  sslcontext.context.setCiphers('RC4-SHA:AES128-SHA:AES256-SHA');

  const pair = tls.createSecurePair(sslcontext, true);

  assert.ok(pair.encrypted.writable);
  assert.ok(pair.cleartext.writable);

  pair.encrypted.pipe(socket);
  socket.pipe(pair.encrypted);

  log('i set it secure');

  pair.on('secure', function() {
    log('connected+secure!');
    pair.cleartext.write('hello\r\n');
    log(pair.cleartext.getPeerCertificate());
    log(pair.cleartext.getCipher());
  });

  pair.cleartext.on('data', function(data) {
    log('read bytes ' + data.length);
    pair.cleartext.write(data);
  });

  socket.on('end', function() {
    log('socket end');
  });

  pair.cleartext.on('error', function(err) {
    log('got error: ');
    log(err);
    log(err.stack);
    socket.destroy();
  });

  pair.encrypted.on('error', function(err) {
    log('encrypted error: ');
    log(err);
    log(err.stack);
    socket.destroy();
  });

  socket.on('error', function(err) {
    log('socket error: ');
    log(err);
    log(err.stack);
    socket.destroy();
  });

  socket.on('close', function(err) {
    log('socket closed');
  });

  pair.on('error', function(err) {
    log('secure error: ');
    log(err);
    log(err.stack);
    socket.destroy();
  });
}));

let gotHello = false;
let sentWorld = false;
let gotWorld = false;

server.listen(0, common.mustCall(function() {
  // To test use: openssl s_client -connect localhost:8000

  const args = ['s_client', '-connect', `127.0.0.1:${this.address().port}`];

  // for the performance and stability issue in s_client on Windows
  if (common.isWindows)
    args.push('-no_rand_screen');

  const client = spawn(common.opensslCli, args);


  let out = '';

  client.stdout.setEncoding('utf8');
  client.stdout.on('data', function(d) {
    out += d;

    if (!gotHello && /hello/.test(out)) {
      gotHello = true;
      client.stdin.write('world\r\n');
      sentWorld = true;
    }

    if (!gotWorld && /world/.test(out)) {
      gotWorld = true;
      client.stdin.end();
    }
  });

  client.stdout.pipe(process.stdout, { end: false });

  client.on('exit', common.mustCall(function(code) {
    assert.strictEqual(0, code);
    server.close();
  }));
}));

process.on('exit', function() {
  assert.ok(gotHello);
  assert.ok(sentWorld);
  assert.ok(gotWorld);
});