/// <summary>
/// 更新群
/// </summary>
/// <param name="room">群</param>
public static bool UpdateRoom(IMLibrary3.Organization.Room room)
{
try
{
string sql = "update Rooms set RoomName=@RoomName,Notice=@Notice,Users=@Users"
+ " where (RoomID=@RoomID)";
System.Data.SqlClient.SqlParameter[] sqlpar = new System.Data.SqlClient.SqlParameter[]
{ new System.Data.SqlClient.SqlParameter("@RoomID", room.RoomID),
new System.Data.SqlClient.SqlParameter("@RoomName", room.RoomName),
new System.Data.SqlClient.SqlParameter("@Notice", room.Notice),
new System.Data.SqlClient.SqlParameter("@Users", room.UserIDs), };
IMLibrary.SqlData.DataAccess.ExecSql(sql, sqlpar);
return(true);
}
catch { return(false); }
}
/// <summary>
/// 创建群
/// </summary>
/// <param name="room">群</param>
public static bool CreateRoom(IMLibrary3.Organization.Room room)
{
try
{
string sql = "insert into Rooms(RoomID,RoomName,Notice,Users,CreateUserID,CreateDateTime)"
+ " values(@RoomID,@RoomName,@Notice,@Users,@CreateUserID,@CreateDateTime)";
System.Data.SqlClient.SqlParameter[] sqlpar = new System.Data.SqlClient.SqlParameter[]
{ new System.Data.SqlClient.SqlParameter("@RoomID", room.RoomID),
new System.Data.SqlClient.SqlParameter("@RoomName", room.RoomName),
new System.Data.SqlClient.SqlParameter("@Notice", room.Notice),
new System.Data.SqlClient.SqlParameter("@Users", room.UserIDs),
new System.Data.SqlClient.SqlParameter("@CreateUserID", room.CreateUserID),
new System.Data.SqlClient.SqlParameter("@CreateDateTime", DateTime.Now), };
IMLibrary.SqlData.DataAccess.ExecSql(sql, sqlpar);
return(true);
}
catch { return(false); }
}
/// <summary>
/// 从用户中获取加入的群集合数组
/// </summary>
/// <param name="user"></param>
/// <returns></returns>
private Room[] GetRooms(UserVcard user)
{
lock (user.Rooms)//确保线程安全
{
Room[] Rooms = new Room[user.Rooms.Count];
user.Rooms.Values.CopyTo(Rooms, 0);
return Rooms;
}
}
/// <summary>
/// 从群中获取用户集合数组
/// </summary>
/// <param name="room"></param>
/// <returns></returns>
private UserVcard[] GetUsers(Room room)
{
lock (room.Users)//确保线程安全
{
UserVcard[] Users = new UserVcard[room.Users.Count];
room.Users.Values.CopyTo(Users, 0);
return Users;
}
}
void msgServer_RequestChangeRoom(object sender, MsgServerEventArgs e)
{
ChangeRoom changeRoom = e.obj as ChangeRoom;
if (changeRoom.type == type.New && e.RequestUser.CreatedRoomsCount < e.RequestUser.CreateRooms)//如果请求创建群
{
#region 创建群
//10次随机产生群号(所谓摇号)，如果10次摇出的群号都已被创建，则退出并表示服务器忙
//10都不能摇到空号表示用户运气不好，下次再试！
for (int i = 0; i < 10; i++)
{
Random ran = new Random();
int RandKey = ran.Next(10000, 1000000000);//开始摇号，群号码从10000至1000000000随机产生
if (!Rooms.ContainsKey(RandKey.ToString()))//如果是空号，以此号创建群
{
Room room = new Room();
room.RoomID = RandKey.ToString();
room.RoomName = changeRoom.RoomName;
room.Notice = changeRoom.Notice;
room.UserIDs = changeRoom.UserIDs;
room.CreateUserID =e.RequestUser.UserID;//创建者为请求者
e.RequestUser.CreatedRoomsCount++;//标记用户创建群数
#region 将内存中的用户添加到内存中的群
string[] userids = room.UserIDs.Split(';');
foreach (string userID in userids)
{
UserVcard user = getUser(userID);
if (user != null)
{
if (room.Users == null) room.Users = new Dictionary<string, User>();
if (!room.Users.ContainsKey(userID))
room.Users.Add(user.UserID, user);
if (user.Rooms == null) user.Rooms = new Dictionary<string, Room>();
if (!user.Rooms.ContainsKey(room.RoomID))
user.Rooms.Add(room.RoomID, room);
}
}
room.UserIDs = "";//重新生成群包含的Users
foreach (User u in GetUsers(room))
room.UserIDs += u.UserID + ";";
#endregion
Rooms.Add(room.RoomID, room);//将创建的群添加到内存
DBHelper.CreateRoom(room);//将创建的群添加到数据库
changeRoom.RoomID = room.RoomID;
changeRoom.CreateUserID = room.CreateUserID;
SendMessageToRoom(room.CreateUserID, room, Factory.CreateXMLMsg(changeRoom));//发送消息到刚创建的群，通知群里的用户已经加入群
return;//创建群成功，退出
}
}
#endregion
}
else if (changeRoom.type == type.set)//请求更新群
{
#region 更新群
Room room = getRoom(changeRoom.RoomID);
if (room != null && room.CreateUserID ==e.RequestUser.UserID)//如果群创建者为请求用户
{
string oldVersion = room.RoomName.Trim() + room.Notice.Trim() + room.UserIDs;
changeRoom.CreateUserID = room.CreateUserID;
room.Notice = changeRoom.Notice;
room.RoomName = changeRoom.RoomName;
string[] newUserids = changeRoom.UserIDs.Split(';');
#region 查找群中被删除的用户
changeRoom.type = type.delete;//标识删除群
changeRoom.UserIDs = null;//不要将新群包含的用户通知退出群的用户
string delRoomMsg = IMLibrary3.Protocol.Factory.CreateXMLMsg(changeRoom);
bool t = false;
foreach (UserVcard user in GetUsers(room))
{
t = false;
foreach (string userID in newUserids)
if (user.UserID == userID)//如果群里的用户在更新后的用户集合中存在，则表示未删除
t = true;
if (!t)//如果更新的用户集合中没有当前用户，则表示从群中删除此用户
{
room.Users.Remove(user.UserID);
user.Rooms.Remove(room.RoomID);
SendMessageToUser(user, delRoomMsg);//通知用户退出群
}
}
#endregion
#region 添加新用户记录群中新用户
foreach (string userID in newUserids)
{
UserVcard user = getUser(userID);//获取新用户
if (user != null)
{
if (!room.Users.ContainsKey(user.UserID))
{
room.Users.Add(user.UserID, user);//如果群里无此用户，则新增用户
if (!user.Rooms.ContainsKey(room.RoomID))
user.Rooms.Add(room.RoomID, room);//如果用户不在此群，则为用户新增群
}
}
}
#endregion
room.UserIDs = "";//重新生成群包含的Users
foreach (User u in GetUsers(room))
room.UserIDs += u.UserID + ";";
changeRoom.type = type.set;//标识群信息被成功修改
changeRoom.UserIDs = room.UserIDs;//设置最新用户列表
string newVersion = room.RoomName.Trim() + room.Notice.Trim() + room.UserIDs;
if (oldVersion == newVersion) return;//如果没有做任何更改
SendMessageToRoom(room.CreateUserID, room, Factory.CreateXMLMsg(changeRoom));//通知群内原用户，群信息已经修改
DBHelper.UpdateRoom(room);
}
#endregion
}
}
/// <summary>
/// 发送消息到群
/// </summary>
/// <param name="userID"></param>
/// <param name="room"></param>
/// <param name="XMLMsg"></param>
public void SendMessageToRoom(string userID, Room room, string XMLMsg)
{
if (!room.Users.ContainsKey(userID)) return;//如果群中无此用户,则不发送消息
foreach (User user in GetUsers(room))
{
if (user.ShowType == IMLibrary3.Enmu.ShowType.Offline)
DBHelper.addMessageToDB(user.UserID, userID, room.RoomID, IMLibrary3.Enmu.MessageType.Group, XMLMsg);
else
SendMessageToUser(user, XMLMsg);
}
}
/// <summary>
/// 获得群信息
/// </summary>
/// <param name="room"></param>
private void onOrgRooms(Room room)
{
exRoom exroom = new exRoom();
exroom.RoomID = room.RoomID;
exroom.RoomName = room.RoomName;
exroom.Notice = room.Notice;
exroom.UserIDs = room.UserIDs;
exroom.CreateUserID = room.CreateUserID;
Rooms.Add(exroom);
if (frmOrg != null && !frmOrg.IsDisposed)
{
frmOrg.Times = 0;
frmOrg.Value = this.Rooms.Count;
}
}
/// <summary>
/// 将所有数据库中群组读入内存
/// </summary>
/// <returns></returns>
public static Dictionary<string, Room> GetRooms()
{
Dictionary<string, Room>Rooms = new Dictionary<string, Room>();
System.Data.SqlClient.SqlDataReader dr = DataAccess.GetReaderBySql("select * from Rooms");
if (dr != null)
{
while (dr.Read())
{
Room room = new Room();
room.RoomID = dr["RoomID"].ToString().Trim();
room.RoomName = dr["RoomName"] is DBNull ? room.RoomID : dr["RoomName"].ToString().Trim();
room.CreateUserID = dr["CreateUserID"] is DBNull ? "" : dr["CreateUserID"].ToString().Trim();
room.UserIDs = dr["Users"] is DBNull ? "" : dr["Users"].ToString().Trim();
room.Notice = dr["Notice"] is DBNull ? "" : dr["Notice"].ToString().Trim();
Rooms.Add(room.RoomID, room);
}
dr.Close();
}
dr.Dispose();
return Rooms;
}