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', room => {
      console.log(`${socket.id} joins ${room}`)
      socket.join(room, () => {
        io.to(room).emit('user joined', { room, socketId: socket.id })
        io.of(room).clients((error, clients) => {
          if (error) throw error
          socket.emit('got client list', clients)
        })
      })
    })
    socket.on('get all clients', () => {
      io.clients((e, c) => {
        if (e) console.log(e)
        console.log('all clients:', c)
      })
    })
    socket.on('part', namespace => {
      console.log('part', socket.id, namespace)
      io.to(namespace).emit('user left', { namespace, socketId: socket.id })
      socket.leave(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()
    })
  })
}