public void CreateChatGroup(string creatorUsername, string groupName, string message, List <int> memberIds)
{
if (LMSChatHelper.IsGroupUnique(chatGroups, groupName))
{
ChatUser groupCreator = connectedChatUsers.Where(user => user.Username.Equals(creatorUsername)).FirstOrDefault();
if (groupCreator != null)
{
ChatGroup chatGroup = new ChatGroup(groupName, groupCreator);
MessageDetails messageDetails = LMSChatHelper.GenerateMessageDetails(message, groupCreator);
chatGroup.GroupMessages.Add(messageDetails);
List <ChatUser> members = LMSChatHelper.GenerateGroupMembers(connectedChatUsers, memberIds);
if (!members.Contains(groupCreator))
{
members.Add(groupCreator);
}
chatGroup.GroupUsers = members;
chatGroups.Add(chatGroup);
List <string> connectionIds = LMSChatHelper.GenerateConnectionIds(members);
connectionIds.ForEach(x => Groups.Add(x, groupName));
Clients.Clients(connectionIds).UpdateGroup(new { success = true, group = chatGroup, status = "created" });
}
}
else
{
Clients.Caller.ShowMessage("Group name is not unique. Please try with another group name!");
}
}
public void RemoveMember(string groupName, string memberUsername)
{
ChatGroup chatGroup = chatGroups.Where(x => x.GroupName.Equals(groupName)).FirstOrDefault();
if (chatGroup != null)
{
ChatUser userToRemove = chatGroup.GroupUsers.Where(x => x.Username.Equals(memberUsername)).FirstOrDefault();
if (userToRemove != null)
{
string removedConnection = userToRemove.ConnectionId;
Groups.Remove(removedConnection, groupName);
chatGroup.GroupUsers.Remove(userToRemove);
List <string> connectionIds = LMSChatHelper.GenerateConnectionIds(chatGroup.GroupUsers);
Clients.Clients(connectionIds).UpdateGroup(new { success = true, group = chatGroup, status = "updated" });
Clients.Client(removedConnection).RemovedFromGroup(new { success = true, group = chatGroup });
}
else
{
Clients.Caller.ShowMessage("User: "******" is not in group: " + groupName + ".");
}
}
else
{
Clients.Caller.ShowMessage("Error while removing member from group: " + groupName + ".");
}
}
public void AddNewMembers(string groupName, List <int> newMembersIds)
{
ChatGroup chatGroup = chatGroups.Where(x => x.GroupName.Equals(groupName)).FirstOrDefault();
List <string> newConnections = new List <string>();
string newConnection = "";
if (chatGroup != null)
{
List <ChatUser> members = LMSChatHelper.GenerateGroupMembers(connectedChatUsers, newMembersIds);
foreach (ChatUser member in members)
{
bool exists = chatGroup.GroupUsers.Any(x => x.UserId.Equals(member.UserId));
if (!exists)
{
chatGroup.GroupUsers.Add(member);
newConnection = member.ConnectionId;
newConnections.Add(newConnection);
Groups.Add(newConnection, groupName);
Clients.Client(newConnection).UpdateGroup(new { success = true, group = chatGroup, status = "created" });
}
}
List <string> connectionIds = LMSChatHelper.GenerateConnectionIds(chatGroup.GroupUsers);
newConnections.ForEach(x => connectionIds.Remove(x));
Clients.Clients(connectionIds).UpdateGroup(new { success = true, group = chatGroup, status = "updated" });
}
else
{
Clients.Caller.ShowMessage("Error while adding new members to group: " + groupName + ".");
}
}
public void SendGroupMessage(string messageText, string groupName, string senderUsername)
{
ChatGroup chatGroup = chatGroups.Where(x => x.GroupName.Equals(groupName)).FirstOrDefault();
if (chatGroup != null)
{
ChatUser messageSender = connectedChatUsers.Where(x => x.Username.Equals(senderUsername)).FirstOrDefault();
MessageDetails message = LMSChatHelper.GenerateMessageDetails(messageText, messageSender);
chatGroup.GroupMessages.Add(message);
List <string> connectionIds = LMSChatHelper.GenerateConnectionIds(chatGroup.GroupUsers);
Clients.Clients(connectionIds).UpdateChat(messageSender, messageText, chatGroup.GroupName);
}
else
{
Clients.Caller.ShowMessage("Error while sending message.");
}
}