ws

type Client struct {
	Id     string
	Groups []string
	Hub    *Hub
	Conn   *websocket.Conn
	Send   chan *Message
}

type Hub struct {
	Clients    map[string]*Client
	Broadcast  chan *Message
	Register   chan *Client
	Unregister chan *Client
}

type Message struct {
	Sender     string   `json:"sender,omitempty"`
	Recipients []string `json:"recipients,omitempty"`
	Groups     []string `json:"groups,omitempty"`
	Content    any      `json:"content,omitempty"`
}