module.exports = io => {
  io.on('connection', async socket => {
    console.log(`A socket connection to the server has been made: ${socket.id}`)
    socket.join('#chat', () => {
      socket.emit('get my rooms', socket.rooms)
    })

    socket.on('message', message => {
      io.to(message.room).emit(message)
    })

    socket.on('get all users', () => {
      console.log('get all users')
      console.log(Object.keys(io.sockets.sockets))
    })

    socket.on('get all rooms', () => {
      console.log('get all rooms')
      console.log(
        Object.keys(io.sockets.adapter.rooms)
          .filter(r => r[0] === '#')
          .map(k => ({
            roomName: k,
            sockets: Object.keys(io.sockets.adapter.rooms[k]['sockets']),
          }))
      )
    })

    socket.on('get my rooms', () => {
      console.log('get my rooms')
      console.log(Object.keys(socket.rooms))
    })

    socket.on('join a room', roomName => {
      console.log('join a room')
      socket.join(roomName, () => {
        socket.emit('get my rooms')
      })
    })

    socket.on('leave a room', () => {
      console.log('leave a room')
    })

    socket.on('join', payload => {
      console.log(payload.room)
      socket.join({ room: payload.room }, () => {
        socket.emit('got user rooms', Object.keys(socket.rooms))
      })
    })
    socket.on('disconnect', async () => {
      io.emit('user disconnected', { socketId: socket.id })
      console.log(`${socket.id} has disconnected.`)
      io.emit(
        'received rooms',
        Object.keys(io.sockets.adapter.rooms)
          .filter(r => r[0] === '#')
          .map(k => ({
            roomName: k,
            sockets: Object.keys(io.sockets.adapter.rooms[k]['sockets']),
          }))
      )
    })
  })
}