package nexus

import (
	"io"
	"sync"

	"dynatron.me/x/stillbox/pkg/pb"

	"github.com/rs/zerolog/log"
	"google.golang.org/protobuf/proto"
)

type Client interface {
	sync.Locker

	Connection

	Conn() Connection
	HandleCommand(*pb.Command)
	HandleMessage([]byte)
}

type client struct {
	sync.RWMutex

	Connection

	nexus *Nexus
}

type Connection interface {
	io.Closer
	CloseCh()

	Send(*pb.Message) (closed bool)
}

func (n *Nexus) NewClient(conn Connection) Client {
	sess := &client{
		Connection: conn,
		nexus:      n,
	}

	return sess
}

func (c *client) Registry() Registry {
	return c.nexus
}

func (c *client) Conn() Connection {
	return c.Connection
}

func (c *client) HandleMessage(mesgBytes []byte) {
	var msg pb.Command
	err := proto.Unmarshal(mesgBytes, &msg)
	if err != nil {
		log.Error().Err(err).Msg("command unmarshal")
		return
	}

	c.HandleCommand(&msg)
}