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entity.go
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entity.go
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package main
// Meeting represents information about dogs.
import (
"github.com/bitly/go-simplejson"
"github.com/gorilla/websocket"
)
// Client is a struct that has connections;
type Client struct {
SessionID string
Resources ClientResources
}
// ClientResources is stream resources that sits in client
type ClientResources struct {
Screen bool `json:"screen"`
Video bool `json:"video"`
Audio bool `json:"audio"`
}
// Meeting object describes a meeting with its state and members
type Meeting struct {
Room string
Locked bool
Clients map[*websocket.Conn]*Client
}
func (meeting *Meeting) getNumberOfClients() int {
return len(meeting.Clients)
}
func (meeting *Meeting) getConn(sessionid string) *websocket.Conn {
for conn, client := range meeting.Clients {
if client.SessionID == sessionid {
return conn
}
}
return nil
}
func (meeting *Meeting) describeMeeting(thisConn *websocket.Conn) []byte {
clients := simplejson.New()
for conn, client := range meeting.Clients {
if conn != thisConn {
clients.Set(client.SessionID, client.Resources)
}
}
data := simplejson.New()
data.Set("roomDescription", clients)
joinMsg := simplejson.New()
joinMsg.Set("event", "_join")
joinMsg.Set("data", data)
msg, err := joinMsg.MarshalJSON()
if err != nil {
return []byte(`{"event":"_join","data":{"err":"Json marshal error"}}`)
}
return msg
}
func (meeting *Meeting) removeFeed(thisConn *websocket.Conn, tp string) {
thisClient := meeting.Clients[thisConn]
if thisClient != nil {
if len(tp) == 0 {
meeting.removeClient(thisConn)
} else {
removeMsg := getRemoveFeedMessage(thisClient.SessionID, tp)
for conn := range meeting.Clients {
if conn != thisConn {
if err := conn.WriteMessage(websocket.TextMessage, removeMsg); err != nil {
meeting.removeClient(conn)
}
}
}
}
}
}
func (meeting *Meeting) removeClient(thisConn *websocket.Conn) {
defer thisConn.Close()
thisClient := meeting.Clients[thisConn]
if thisClient != nil {
delete(meeting.Clients, thisConn)
if len(meeting.Clients) > 0 {
// TODO: Notify other users
for clientConnection := range meeting.Clients {
if err := clientConnection.WriteMessage(websocket.TextMessage, getRemoveClientMessage(thisClient.SessionID)); err != nil {
meeting.removeClient(clientConnection)
}
}
} else {
delete(allMeetings, meeting.Room)
}
}
}