ws.on('message', function(message) {
var messageObject = JSON.parse(message);
if(messageObject.type === WsSocketMessages.SUBCRIBE){
wsClients.subscribe(ws,messageObject.channel);
ws.send(JSON.stringify({subscription : messageObject.channel}));
redisClient.lrange("chan:"+messageObject.channel, 0, 19, function(error, response) {
if(!error) {
for(var i=response.length;i>=0;--i){
wsClients.publish(messageObject.channel,response[i],ws);
}
}
});
}else if(messageObject.type === WsSocketMessages.UNSUBSCRIBE){
wsClients.unsubscribe(ws,messageObject.channel);
}else if(messageObject.type === WsSocketMessages.ADD){
var channelKey = "chan:"+messageObject.channel;
redisClient.lpush(channelKey,messageObject.message, function(error, response) {
if(error) {
ws.send(JSON.stringify({subscription : messageObject.channel,status : 500}));
} else {
wsClients.publish(messageObject.channel,messageObject.message);
ws.send(JSON.stringify({subscription : messageObject.channel,status : 204}));
}
});
}else{
// type does not exist
ws.send(JSON.stringify({subscription : messageObject.channel,status : 404,message : 'message type not valid'}));
}
});