const users = {}

module.exports = io => {
  io.on('connection', async socket => {
    console.log(`A socket connection to the server has been made: ${socket.id}`)
    users[socket.id] = { socketId: socket.id, nick: socket.id }

    // announce to all
    socket.broadcast.emit('user connected', users[socket.id])
    // send all users TODO remove
    socket.emit(
      'got users',
      Object.keys(io.sockets.sockets).map(socketId => users[socketId])
    )

    socket.on('message', message => {
      console.log('sending message to ', message.to, message)
      io.to(message.to).emit('message', message)
    })

    socket.on('join', namespace => {
      const socketId = socket.id
      console.log(`${socketId} joins ${namespace}`)
      socket.join(namespace, () => {
        io.to(namespace).emit('user joined', { namespace, socketId })
        sendNamespace(namespace)
      })
    })

    socket.on('part', namespace => {
      const socketId = socket.id
      console.log('part', socketId, namespace)
      socket.leave(namespace, () => {
        io.to(namespace).emit('user left', { namespace, socketId })
        sendNamespace(namespace)
      })
    })

    socket.on('change nick', nick => {
      io.emit('changed nick', { socketId: socket.id, nick: nick })
      users[socket.id]['nick'] = nick
    })

    socket.on('get namespaces', () => sendNamespaces())

    const sendNamespaces = () => {
      const namespaces = Object.keys(io.sockets.adapter.rooms).map(k => ({
        namespace: k,
        sockets: Object.keys(io.sockets.adapter.rooms[k]['sockets']),
      }))
      io.emit('got namespaces', namespaces)
    }

    socket.on('disconnect', async () => {
      io.emit('user disconnected', socket.id)
      console.log(`${socket.id} has disconnected.`)
      //sendNamespaces()
    })

    const sendNamespace = namespace => {
      if (!io.sockets.adapter.rooms[namespace]) return
      const newNamespace = {
        namespace,
        sockets: Object.keys(io.sockets.adapter.rooms[namespace].sockets),
      }
      io.emit('got namespace', newNamespace)
    }
  })
}