public void SendMsg(MsgDOT msgDto)
{
using (var db = new ChatServiceContext())
{
var _user = db.Users.FirstOrDefault(a => a.UserName == msgDto.ToName);
if (_user != null)
{
var _msg = new ChatMessage();
_msg.From = db.Users.First(a => a.UserName == msgDto.FromName).UserId;
_msg.To = _user.UserId;
_msg.Message = msgDto.Message;
_msg.MessageState = (int)MessageState.newMessage;
_msg.SendTime = DateTime.Now;
db.ChatMessages.Add(_msg);
db.SaveChanges();
msgDto.MessageId = _msg.MessageId;
msgDto.Time = _msg.SendTime;
syncSelf(msgDto);
PushMsg(msgDto);
}
else
{
string _errorMsg = string.Format("消息“{0}”发送失败：未找到 {1} 。", msgDto.Message, msgDto.ToName);
Clients.Caller.sysMsg(_errorMsg);
if (log.IsErrorEnabled)
{
log.Error(_errorMsg);
}
}
}
}
///// <summary>
///// 组中发言
///// </summary>
///// <param name="groupName">组名</param>
///// <param name="message">信息内容</param>
//public void SendMsgInGroup(string groupName, string message)
//{
// Clients.Group(groupName, null).pushMsg(message);
//}
/// <summary>
/// 链接服务器成功，记录用户登录状态。
/// </summary>
/// <returns></returns>
public override Task OnConnected()
{
List <MsgDOT> historyMsgs = new List <MsgDOT>();
var _userName = Context.QueryString["userName"];
using (var db = new ChatServiceContext())
{
var user = db.Users.FirstOrDefault(u => u.UserName == _userName);
if (user == null)
{
user = new User();
user.UserName = _userName;
db.Users.Add(user);
db.SaveChanges();
}
var _onlineUser = onlineUsers.FirstOrDefault(a => a.UserName == _userName);
if (_onlineUser == null)
{
_onlineUser = new OnlineUser()
{
UserName = _userName, Connections = new List <Connection>()
};
onlineUsers.Add(_onlineUser);
}
_onlineUser.Connections.Add(new Connection()
{
ConnectionId = Context.ConnectionId, Connected = true, UserAgent = ""
});
historyMsgs = db.ChatMessages.Where(a => (a.From == user.UserId && a.To == 1) || (a.From == 1 && a.To == user.UserId))
.OrderByDescending(a => a.MessageId)
.Select(a => new MsgDOT()
{
MessageId = a.MessageId,
FromName = (a.From == 1 ? "tom" : user.UserName),
ToName = (a.From != 1 ? "tom" : user.UserName),
Message = a.Message,
IsRead = a.MessageState == (int)MessageState.readed,
Time = a.SendTime
})
.Take(10)
.ToList();
}
//发送状态信息
string _loginMsg = string.Format("{0} 登录成功，当前共有 {1} 处登录。", _userName, onlineUsers.First(a => a.UserName == _userName).Connections.Count);
Clients.Caller.sysMsg(_loginMsg);
if (log.IsInfoEnabled)
{
log.Info(_loginMsg);
}
//发送历史消息
Clients.Caller.pushHistoryMsg(historyMsgs);
Clients.Caller.sysMsg("以上是历史消息");
return(base.OnConnected());
}