require('dotenv').config()

const io = require('socket.io-client')
const zerorpc = require('zerorpc')
const Readable = require('stream').Readable
const runner = require('./runner')

let remote = io.connect(process.env.SOCKETIO_REMOTE)

remote.on('cmd', (data) => {
  console.log('cmd data', data)
  if (! data.cmd) {
    console.log('malformed param...?')
    return
  }
  console.log('got', data.cmd)
  switch (data.cmd) {
    case 'set_param':
      if (! data.payload) return
      rpc.invoke(data.cmd, data.payload.key, data.payload.value, (err, res, more) => {
        console.log('sent param, got response', res)
      })
      break
    case 'get_params':
    case 'get_last_frame':
      rpc.invoke(data.cmd, (err, res, more) => {
        console.log('got params', res)
        remote.emit('res', {
          cmd: data.cmd,
          res: res,
        })
      })
      break
    default:
      rpc.invoke('send_command', data.cmd, data.payload || null, (err, res, more) => {
        console.log('sent command', res)
        remote.emit('res', {
          cmd: data.cmd,
          res: res,
        })
      })
      break
  }
})

let rpc = new zerorpc.Client()
rpc.connect('tcp://127.0.0.1:' + process.env.RPC_PORT)
rpc.on('error', function(error) {
  console.error('RPC server error:', error)
})
console.log('RPC listening on port ' + process.env.RPC_PORT)

let relay = new zerorpc.Server({
  // Called when the worker starts up and is ready to receive params.
  connected: function (msg, reply) {
    reply()
    console.log('got connect from ' + msg)
    return true
  },

  send_frame: function (fn, meta, frame, reply) {
    reply()
    // console.log('got frame, ' + frame.length + ' bytes')
    remote.emit('frame', { fn: fn, meta: meta, frame: frame })
  },

  send_status: function(key, value, reply) {
    reply()
    remote.emit('status', { key: key, value: value })
  }
})
relay.on('error', function(error) {
  console.error('Relay server error:', error)
})
relay.bind('tcp://0.0.0.0:' + process.env.RELAY_PORT);
console.log('Relay listening on port ' + process.env.RELAY_PORT)

module.exports = { relay: relay, remote: remote, }