//添加聊天信息
public void AddMessage(Message msg)
{
DatabaseMessage newMessage = new DatabaseMessage
{
Sender = msg.Sender,
Receiver = msg.Receiver,
Time = msg.SendTime,
Type = msg.Type.ToString(),
Content = msg.Content
};
dataContext.DatabaseMessage.InsertOnSubmit(newMessage);
dataContext.SubmitChanges();
}
public bool SendMessage(Message msg)
{
try
{
byte[] buffer = Encoding.Unicode.GetBytes(msg.ToString());
streamToServer.Write(buffer, 0, buffer.Length);
return true;
}
catch
{
return false;
}
}
public bool SendMessage(Message msg, NetworkStream streamToClient)
{
string msgString = msg.ToString();
byte[] buffer = Encoding.Unicode.GetBytes(msgString);
try
{
streamToClient.Write(buffer, 0, buffer.Length);
return true;
}
catch
{
return false;
throw;
}
}
public GroupMessageEventArgs(DateTime time, string sender, string receiver, string content)
{
msg = new Message(MessageType.PRIV, time, sender, receiver, content);
}
private bool FowardTo(MessageReceivedEventArgs e, string userName, Message msg)
{
//检测用户是否在线
if (!onlineUsers.Contains(userName))
{
//不在线，写入用户离线信息
database.AddUserMessage(userName, msg);
return true;
}
else
{
//在线，直接发送给目标用户
NetworkStream targetStream = (onlineUsers[userName] as OnlineUser).StreamToRemote;
return receiver.SendMessage(msg, targetStream);
}
}
private void OnNewChatCreated(Message msg)
{
string[] tokens = msg.Content.Split(new char[] { '|' });
string sender = msg.Sender;
int chatNumber = int.Parse(tokens[0]);
string chatName = tokens[1];
List<string> userNames = new List<string>();
for (int i = 2; i < tokens.Length; i++)
{
if (!string.IsNullOrEmpty(tokens[i]))
{
userNames.Add(tokens[i]);
}
}
if (NewChatCreated != null)
{
NewChatCreated(this, new NewChatEventArgs(chatNumber, chatName, sender, userNames));
}
}
public void SendNoResponse(Message msg)
{
sender.SendMessage(msg);
}
public List<ClientUser> SearchFriend(Message msg)
{
sender.SendMessage(msg);
Thread.Sleep(500);
List<ClientUser> usersFound = new List<ClientUser>();
for (int i = 0; i < 10; i++)
{
if (currentResponse == null)
{
Thread.Sleep(50);
continue;
}
//等待响应
if (DateTime.Compare(msg.SendTime, currentResponse.SendTime + new TimeSpan(0, 0, 0, 1, 0)) <= 0)
{
string[] tokens = currentResponse.Content.Split(new char[] { '|' });
string userName = string.Empty, nickName = string.Empty, email = string.Empty;
int age = 18;
GenderOption gender = GenderOption.Male;
for (int j = 0; j < tokens.Length; j++)
{
if (tokens[j].Trim() == "empty")
{
break;
}
if (string.IsNullOrEmpty(tokens[j]))
{
break;
}
if (j % 5 == 0)
{
userName = tokens[j];
}
else if (j % 5 == 1)
{
nickName = tokens[j];
}
else if (j % 5 == 2)
{
gender = (GenderOption)Enum.Parse(typeof(GenderOption), tokens[j]);
}
else if (j % 5 == 3)
{
age = int.Parse(tokens[j]);
}
else
{
email = tokens[j];
ClientUser newUser = new ClientUser(userName, nickName, age, gender, email);
usersFound.Add(newUser);
}
}
}
else
{
Thread.Sleep(50);
}
return usersFound;
}
return usersFound;
}
//属于命令UserSearchCommand
private void SearchUser(object obj)
{
string sender = dataService.UserName;
string userName = search;
string nickName = search;
string gender = GenderSelected;
int age = AgeSelected;
string ageString;
if (age == -1)
{
ageString = "Unlimited";
}
else
{
ageString = age.ToString();
}
string content = userName + "|" + nickName + "|" + gender + "|" + ageString;
Message msg = new Message(MessageType.FRIENDSEARCH, sender, content);
var found = dataService.SendFriendSearchMessage(msg);
FriendsFound.Clear();
//注意为空情况
if (found.Count == 0)
{
MessageBox.Show("没有找到用户");
}
else if (found.Count == 1 && found.First().UserName == dataService.UserName)
{
MessageBox.Show("没有找到用户");
}
else
{
foreach (var user in found)
{
if (user.UserName != dataService.UserName)
{
FriendsFound.Add(user);
}
}
}
}
private void SendGroupChatList(MessageReceivedEventArgs e, string userName)
{
//格式CREATECHAT|time|SERVER|chatnumber|chatname|username1|...
List<ServerChat> allChats = database.GetUserGroupChats(userName);
foreach (var chat in allChats)
{
StringBuilder sb = new StringBuilder();
sb.AppendFormat("{0}|{1}|", chat.ChatNumber, chat.ChatName);
foreach (string name in chat.ChatUserNames)
{
sb.AppendFormat("{0}|", name);
}
Message msg = new Message(MessageType.CREATECHAT, "SERVER", sb.ToString());
FowardTo(e, userName, msg);
Thread.Sleep(400);
}
}
//发送好友信息列表
private void SendFriendList(MessageReceivedEventArgs e, string userName)
{
//格式FRIENDLIST|time|SERVER|username1|nickname1|gender1|age1|email1|...
//注意为空的情况
StringBuilder sb = new StringBuilder();
OnlineUser currentUser = onlineUsers[userName] as OnlineUser;
string content;
if (currentUser.FriendNames == null || currentUser.FriendNames.Count == 0)
{
return;
}
else
{
foreach (string name in currentUser.FriendNames)
{
ServerUser currentFriend = database.GetUser(name);
sb.AppendFormat("{0}|{1}|{2}|{3}|{4}|", currentFriend.UserName,
currentFriend.NickName, currentFriend.Gender.ToString(),
currentFriend.Age, currentFriend.Email);
}
content = sb.ToString();
Message newMessage = new Message(MessageType.FRIENDLIST, "SERVER", content);
FowardTo(e, userName, newMessage);
}
}
private void RespondOK(MessageReceivedEventArgs e)
{
Message respondMessage = new Message(MessageType.OK);
receiver.SendMessage(respondMessage, e.StreamToRemote);
}
private void RespondInvalid(MessageReceivedEventArgs e)
{
Message respondMessage = new Message(MessageType.INVALID);
receiver.SendMessage(respondMessage, e.StreamToRemote);
}
private void ProcessMessage(object sender, MessageReceivedEventArgs e)
{
string originalString = e.Content;
//从string获取Message
Message msg = GenerateMessage(originalString);
//注册
if (msg.Type == MessageType.REGISTER)
{
//数据库中有此用户，注册失败
if (database.ContainsUser(msg.Sender))
{
RespondInvalid(e);
}
//数据库中无此用户，注册成功
else
{
RespondOK(e);
AddUserToDatabase(database, msg.Content);
}
}
//登录
else if (msg.Type == MessageType.LOGIN)
{
string userName = msg.Sender;
string password = msg.Content;
if (CheckIdentity(userName, password) && !onlineUsers.Contains(userName))
{
//回应ok
RespondOK(e);
//将用户加入在线用户表
ServerUser fetchedServerUser = database.GetUser(userName);
OnlineUser newOnlineUser = new OnlineUser(fetchedServerUser, e.StreamToRemote);
onlineUsers.Add(userName, newOnlineUser);
//发送用户好友列表
SendFriendList(e, userName);
Thread.Sleep(100);
//发送用户群聊列表
SendGroupChatList(e, userName);
//发送用户在线好友列表，发送给在线好友JOIN信息
//SendOnlineFriendList(e, userName);
Thread.Sleep(200);
//发送用户离线时收到的信息
SendOfflineMessage(e, userName);
//触发在线用户改变事件
if (OnlineUserChanged != null)
{
OnlineUserChanged(this, new OnlineUserChangedEventArgs(newOnlineUser.UserName, "online"));
}
}
else
{
RespondInvalid(e);
}
}
//查询好友
else if (msg.Type == MessageType.FRIENDSEARCH)
{
string[] keyWords = msg.Content.Split(new char[] { '|' });
string userName = keyWords[0];
string nickName = keyWords[1];
string gender = keyWords[2]; //注意此处gender为string以方便查询
int age = -1;
if (keyWords[3].Trim().ToLower() != "unlimited")
{
age = int.Parse(keyWords[3].Trim());
}
List<ServerUser> usersFound = database.SearchUser(userName, nickName, gender, age);
if (usersFound.Count == 0)
{
Message newMessage = new Message(MessageType.FRIENDSEARCH, "SERVER", "empty");
FowardTo(e, msg.Sender, newMessage);
}
else
{
StringBuilder sb = new StringBuilder();
foreach (ServerUser userFound in usersFound)
{
string newUserName = userFound.UserName;
string newNickName = userFound.NickName;
string newGender = userFound.Gender.ToString();
string newAge = userFound.Age.ToString();
string newEmail = userFound.Email;
sb.AppendFormat("{0}|{1}|{2}|{3}|{4}|", newUserName, newNickName,
newGender, newAge, newEmail);
}
string newContent = sb.ToString();
Message newMessage = new Message(MessageType.FRIENDSEARCH, "SERVER", newContent);
FowardTo(e, msg.Sender, newMessage);
}
}
//私聊，转发给目标用户，写入总聊天记录
else if (msg.Type == MessageType.PRIV)
{
bool IsSuccess = FowardTo(e, msg.Receiver, msg);
if (IsSuccess)
{
database.AddMessage(msg);
RespondOK(e);
}
else
{
RespondInvalid(e);
}
}
//群聊，获取群信息，写入总聊天记录，转发给目标用户
else if (msg.Type == MessageType.GROUP)
{
int chatNumber = int.Parse(msg.Receiver);
ServerChat targetChat = database.GetChat(chatNumber);
foreach (string userName in targetChat.ChatUserNames)
{
if (userName != msg.Sender)
{
try
{
FowardTo(e, userName, msg);
}
catch
{
RespondInvalid(e);
}
}
}
database.AddMessage(msg);
RespondOK(e);
}
//用户离线
else if (msg.Type == MessageType.LEAVE)
{
string userName = msg.Sender;
OnlineUser currentUser = onlineUsers[userName] as OnlineUser;
//向在线好友发送离线消息
foreach (string friendName in currentUser.FriendNames)
{
if (onlineUsers.Contains(friendName))
{
FowardTo(e, friendName, msg);
}
}
//触发在线用户改变事件
if (OnlineUserChanged != null)
{
OnlineUserChanged(this,
new OnlineUserChangedEventArgs(onlineUsers[userName] as OnlineUser, "offline"));
}
//是否要在此关闭用户连接？
//将用户移出在线用户列表
onlineUsers.Remove(userName);
}
//好友申请消息
else if (msg.Type == MessageType.FRIENDREQUEST)
{
MakeFriend(msg.Sender, msg.Receiver);
bool IsSuccess = FowardTo(e, msg.Receiver, msg);
if (IsSuccess)
{
database.AddMessage(msg);
RespondOK(e);
}
else
{
RespondInvalid(e);
}
}
//创建群聊
else if (msg.Type == MessageType.CREATECHAT)
{
ServerChat newChat = new ServerChat(msg.Receiver);
string[] tokens = msg.Content.Split(new char[] { '|' });
foreach (string token in tokens)
{
if (!string.IsNullOrEmpty(token))
{
newChat.AddUserName(token.Trim());
}
}
//在数据库中创建群聊
try
{
database.AddChat(newChat);
}
catch
{
RespondInvalid(e);
}
//将信息转发给群聊参与者
StringBuilder sb = new StringBuilder();
sb.AppendFormat("{0}|", newChat.ChatNumber.ToString());
sb.AppendFormat("{0}|", newChat.ChatName);
foreach (var user in newChat.ChatUserNames)
{
sb.AppendFormat("{0}|", user);
}
Message msgToClient = new Message(MessageType.CREATECHAT, msg.SendTime,
msg.Sender, sb.ToString());
bool IsSuccess = true;
foreach (string userName in newChat.ChatUserNames)
{
IsSuccess = FowardTo(e, userName, msgToClient);
}
//回应
if (IsSuccess)
{
RespondOK(e);
}
else
{
RespondOK(e);
}
}
//离开群聊
else if (msg.Type == MessageType.LEAVECHAT)
{
int chatNumber = int.Parse(msg.Content);
string userName = msg.Sender;
//在数据库中更新群聊信息
try
{
database.DeleteChatUser(chatNumber, userName);
}
catch
{
RespondInvalid(e);
}
//向群聊者推送离开信息
ServerChat currentChat = database.GetChat(chatNumber);
bool IsSuccess = true;
foreach (string name in currentChat.ChatUserNames)
{
if (name != userName)
{
IsSuccess = FowardTo(e, name, msg);
}
}
if (IsSuccess)
{
RespondOK(e);
}
else
{
RespondOK(e);
}
}
}
private Message GenerateMessage(string msgString)
{
string[] tokens = msgString.Split(new char[] { '|' });
DateTime time = DateTime.Parse(tokens[1]);
if (tokens[0].ToUpper() == "LOGIN")
{
Message msg = new Message(MessageType.LOGIN, time, tokens[2], tokens[3]);
return msg;
}
else if (tokens[0].ToUpper() == "REGISTER")
{
StringBuilder sb = new StringBuilder();
for (int i = 2; i < tokens.Length; i++)
{
sb.AppendFormat("{0}|", tokens[i]);
}
Message msg = new Message(MessageType.REGISTER, time,
tokens[2], sb.ToString());
return msg;
}
else if (tokens[0].ToUpper() == "FRIENDSEARCH")
{
string sender = tokens[2];
StringBuilder sb = new StringBuilder();
for (int i = 3; i < tokens.Length; i++)
{
sb.AppendFormat("{0}|", tokens[i]);
}
Message msg = new Message(MessageType.FRIENDSEARCH, time, sender,
sb.ToString());
return msg;
}
else if (tokens[0].ToUpper() == "FRIENDREQUEST")
{
string sender = tokens[2];
string receiver = tokens[3];
string content = tokens[4];
Message msg = new Message(MessageType.FRIENDREQUEST, time, sender, receiver, content);
return msg;
}
else if (tokens[0].ToUpper() == "PRIV")
{
string sender = tokens[2];
string receiver = tokens[3];
string content = tokens[4];
Message msg = new Message(MessageType.PRIV, time, sender, receiver, content);
return msg;
}
else if (tokens[0].ToUpper() == "GROUP")
{
string sender = tokens[2];
string receiver = tokens[3];
string content = tokens[4];
Message msg = new Message(MessageType.GROUP, time, sender, receiver, content);
return msg;
}
//离线格式：LEAVE|time|sender
else if (tokens[0].ToUpper() == "LEAVE")
{
string sender = tokens[2];
Message msg = new Message(MessageType.LEAVE, time, sender, "");
return msg;
}
else if (tokens[0].ToUpper() == "CREATECHAT")
{
string sender = tokens[2];
string chatName = tokens[3];
StringBuilder sb = new StringBuilder();
for (int i = 4; i < tokens.Length; i++)
{
sb.AppendFormat("{0}|", tokens[i]);
}
Message msg = new Message(MessageType.CREATECHAT, time, sender, chatName, sb.ToString());
return msg;
}
else if (tokens[0].ToUpper() == "LEAVECHAT")
{
string sender = tokens[2];
string chatNumber = tokens[3];
Message msg = new Message(MessageType.LEAVECHAT, time, sender, chatNumber);
return msg;
}
//TODO: other circumstences
else
{
Message msg = new Message();
return msg;
}
}
//属于AddFriendCommand
private void AddFriend(object obj)
{
string targetName = (obj as ClientUser).UserName;
//首先判断是否已经是好友
var currentUserFriends = dataService.GetAllFriends();
var searchedUser = from u in currentUserFriends
where u.UserName == targetName
select u;
if (searchedUser.Count() != 0)
{
MessageBox.Show("你与此用户已是好友");
return;
}
Message msg = new Message(MessageType.FRIENDREQUEST, dataService.UserName, targetName
, string.Empty);
ResponseType response = dataService.SendAddFriendMessage(msg);
if (response == ResponseType.OK)
{
ClientUser newFriend = obj as ClientUser;
Utilities.Messenger.Default.Send(new Messages.NewFriendMessage(newFriend));
MessageBox.Show("添加好友成功");
}
else if (response == ResponseType.INVALID)
{
MessageBox.Show("添加好友失败");
}
else
{
MessageBox.Show("网络错误");
}
}
//发送在线好友列表
private void SendOnlineFriendList(MessageReceivedEventArgs e, string userName)
{
//格式ONLINELIST|time|SERVER|username1|username2|...
//注意为空的情况
StringBuilder sb = new StringBuilder();
OnlineUser currentUser = onlineUsers[userName] as OnlineUser;
if (currentUser.FriendNames.Count != 0)
{
foreach (string friendName in currentUser.FriendNames)
{
if (onlineUsers.Contains(friendName))
{
sb.AppendFormat("{0}|", friendName);
//发送上线信息，格式为JOIN|time|username
Message msgToFriend = new Message(MessageType.JOIN, userName, string.Empty);
FowardTo(e, friendName, msgToFriend);
}
}
string content = sb.ToString();
Message newMessage = new Message(MessageType.ONLINELIST, "SERVER", content);
FowardTo(e, userName, newMessage);
}
}
private void LogIn(object obj)
{
if (!isConnected)
{
if (!dataService.Connect(IPAddress.Parse(ipAddress), portNumber))
{
MessageBox.Show("无法连接至服务器");
isConnected = false;
}
else
{
isConnected = true;
}
}
string passwordEncripted = GetMD5();
Message logInMessage = new Message(MessageType.LOGIN, DateTime.Now, UserName, passwordEncripted);
ResponseType logInResponse = dataService.SendLogInMessage(logInMessage);
if (logInResponse == ResponseType.OK)
{
SaveSettings();
dataService.LoadUserData(userName);
dataService.UserName = UserName;
Main mainWindow = new Main(dataService);
this._closeAction.Invoke();
}
else if (logInResponse == ResponseType.INVALID)
{
MessageBox.Show("用户名或密码错误");
}
else
{
MessageBox.Show("网络错误");
}
}
//属于命令SendMessageCommand
private void SendMessage(object obj)
{
selectedChat.ChatLogs.Add(new ChatLog(DateTime.Now, dataService.UserName, textEntered));
if (selectedChat is PrivateChat)
{
string receiver = (selectedChat as PrivateChat).RemoteUser.UserName;
Message msg = new Message(MessageType.PRIV, dataService.UserName, receiver, textEntered);
dataService.SendChatMessage(msg);
}
else
{
string groupNumber = (selectedChat as GroupChat).ChatNumber.ToString();
Message msg = new Message(MessageType.GROUP, dataService.UserName, groupNumber, textEntered);
dataService.SendChatMessage(msg);
}
TextEntered = string.Empty;
}
public ResponseType Send(Message msg)
{
sender.SendMessage(msg);
Thread.Sleep(500);
for (int i = 0; i < 10; i++)
{
Debug.WriteLine("checked {0}", DateTime.Now);
if (currentResponse == null)
{
Thread.Sleep(50);
continue;
}
//等待响应
if (msg.SendTime.CompareTo(currentResponse.SendTime + new TimeSpan(0,0,0,1,0)) <= 0)
{
Debug.WriteLine("Response handled {0}", DateTime.Now);
switch (currentResponse.Type)
{
case MessageType.INVALID:
return ResponseType.INVALID;
case MessageType.OK:
return ResponseType.OK;
case MessageType.ERROR:
return ResponseType.ERROR;
default:
return ResponseType.ERROR;
}
}
else
{
Thread.Sleep(50);
}
}
Debug.WriteLine("No response {0}", DateTime.Now);
return ResponseType.ERROR;
}
//添加用户聊天信息
public void AddUserMessage(string userName, Message msg)
{
DatabaseUser targetUser = (from u in dataContext.DatabaseUser
where u.UserName == userName
select u).Single();
DatabaseUserMessage newUserMessage = new DatabaseUserMessage()
{
Time = msg.SendTime,
Sender = msg.Sender,
Receiver = msg.Receiver,
Content = msg.Content,
Type = msg.Type.ToString()
};
targetUser.DatabaseUserMessage.Add(newUserMessage);
dataContext.SubmitChanges();
}
private Message GenerateMessage(string orginalString)
{
string[] tokens = orginalString.Split(new char[] { '|' });
DateTime time = DateTime.Parse(tokens[1]);
Message msg;
StringBuilder sb;
switch (tokens[0].ToUpper())
{
case "OK":
msg = new Message(MessageType.OK, time);
break;
case "INVALID":
msg = new Message(MessageType.INVALID, time);
break;
case "ERROR":
msg = new Message(MessageType.ERROR, time);
break;
case "PRIV":
sb = new StringBuilder();
for (int i = 4; i < tokens.Length; i++)
{
sb.AppendFormat("{0} ", tokens[i]);
}
msg = new Message(MessageType.PRIV, time, tokens[2], tokens[3], sb.ToString());
break;
case "GROUP":
sb = new StringBuilder();
for (int i = 4; i < tokens.Length; i++)
{
sb.AppendFormat("{0} ", tokens[i]);
}
msg = new Message(MessageType.GROUP, time, tokens[2], tokens[3], sb.ToString());
break;
case "ONLINELIST":
case "FRIENDLIST":
sb = new StringBuilder();
for (int i = 3; i < tokens.Length; i++)
{
sb.AppendFormat("{0}|", tokens[i]);
}
msg = new Message(MessageType.FRIENDLIST, time, "SERVER", sb.ToString());
break;
case "JOIN":
msg = new Message(MessageType.JOIN, time, tokens[2], string.Empty);
break;
case "LEAVE":
msg = new Message(MessageType.LEAVE, time, tokens[2], string.Empty);
break;
case "FRIENDREQUEST":
sb = new StringBuilder();
for (int i = 4; i < tokens.Length; i++)
{
sb.AppendFormat("{0} ", tokens[i]);
}
msg = new Message(MessageType.FRIENDREQUEST, time, tokens[2], tokens[3], sb.ToString());
break;
case "FRIENDSEARCH":
sb = new StringBuilder();
for (int i = 3; i < tokens.Length; i++)
{
sb.AppendFormat("{0}|", tokens[i]);
}
msg = new Message(MessageType.FRIENDSEARCH, time, "SERVER", sb.ToString());
break;
case "CREATECHAT":
sb = new StringBuilder();
for (int i = 3; i < tokens.Length; i++)
{
sb.AppendFormat("{0}|", tokens[i]);
}
msg = new Message(MessageType.CREATECHAT, time, tokens[2], sb.ToString());
break;
case "LEAVECHAT":
msg = new Message(MessageType.LEAVECHAT, time, tokens[2], tokens[3]);
break;
default:
msg = new Message(MessageType.ERROR, time);
break;
}
return msg;
}
//获得用户离线消息并清空离线消息
public List<Message> FetchUserMessage(string userName)
{
List<Message> newUserMessages = new List<Message>();
var fetchedUser = (from u in dataContext.DatabaseUser
where u.UserName == userName
select u).Single();
var fetchedUserMessage = from m in fetchedUser.DatabaseUserMessage
select m;
foreach (DatabaseUserMessage msg in fetchedUserMessage)
{
MessageType msgType = (MessageType)Enum.Parse(typeof(MessageType), msg.Type);
Message newMessage = new Message(msgType, msg.Time, msg.Sender, msg.Receiver, msg.Content);
newUserMessages.Add(newMessage.Clone() as Message);
}
foreach (DatabaseUserMessage msg in fetchedUserMessage)
{
dataContext.DatabaseUserMessage.DeleteOnSubmit(msg);
}
dataContext.SubmitChanges();
return newUserMessages;
}
/// <summary>
/// 对收到信息事件的处理
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ProcessMessage(object sender, MessageReceivedEventArgs e)
{
string orginalString = e.Content;
Message msg = GenerateMessage(orginalString);
switch (msg.Type)
{
case MessageType.ONLINELIST:
string[] receivedUserNames = msg.Content.Split(new char[] { '|' });
foreach (string receivedUserName in receivedUserNames)
{
UpdateUserOnline(receivedUserName);
}
break;
case MessageType.JOIN:
UpdateUserOnline(msg.Content);
break;
case MessageType.LEAVE:
UpdateUserOffline(msg.Sender);
break;
case MessageType.FRIENDLIST:
UpdateFriendInformation(msg.Content);
break;
case MessageType.PRIV:
//私聊，触发私聊信息事件
if (PrivateMessageReceived != null)
{
PrivateMessageReceived(this,
new PrivateMessageEventArgs(msg.SendTime, msg.Sender
, msg.Receiver, msg.Content));
}
break;
case MessageType.GROUP:
//群聊，触发群聊信息事件
if (GroupMessageReceived != null)
{
GroupMessageReceived(this,
new GroupMessageEventArgs(msg.SendTime, msg.Sender
, msg.Receiver, msg.Content));
}
break;
case MessageType.FRIENDREQUEST:
//好友申请，触发事件
if (FriendRequestReceived != null)
{
FriendRequestReceived(this,
new FriendRequestEventArgs(msg.Sender, msg.Content));
}
break;
case MessageType.FRIENDSEARCH:
//好友搜索结果，交由应答处理
currentResponse = msg;
break;
case MessageType.OK:
currentResponse = msg;
Debug.WriteLine("response updated {0}", DateTime.Now);
break;
case MessageType.ERROR:
currentResponse = msg;
Debug.WriteLine("response updated {0}", DateTime.Now);
break;
case MessageType.INVALID:
lock (currentResponse)
{
currentResponse = msg;
Debug.WriteLine("response updated {0}", DateTime.Now);
}
break;
case MessageType.CREATECHAT:
OnNewChatCreated(msg);
break;
case MessageType.LEAVECHAT:
if (UserLeaveChat != null)
{
UserLeaveChat(this, new UserLeaveChatEventArgs(msg.Sender, msg.Content));
}
break;
default:
break;
}
}
//查询聊天信息
public List<Message> SearchMessage(string keyWord, string userName)
{
var selectedMessages = from m in dataContext.DatabaseMessage
where (m.Sender == userName || m.Receiver == userName) && (m.Content.Contains(keyWord))
orderby m.Time descending
select m;
List<Message> targetMessages = new List<Message>();
foreach (DatabaseMessage msg in selectedMessages)
{
MessageType type = (MessageType)Enum.Parse(typeof(MessageType), msg.Type);
string sender = msg.Sender;
string receiver = msg.Receiver;
string content = msg.Content;
DateTime time = msg.Time;
Message newMessage = new Message(type, time, sender, receiver, content);
targetMessages.Add(newMessage);
}
return targetMessages;
}