public void ProcessGroupUpdateMessage(GroupUpdateMessage message)
{
switch (message.typeOfChange)
{
case ChangeType.Create:
createNewGroup(message);
break;
case ChangeType.Update:
updateGroup(message);
break;
case
ChangeType.Leave:
leaveGroup(message);
break;
case ChangeType.Delete:
removeGroup(message);
break;
default:
_messageSender.SendCustomMessage(message.Source, "Bad request");
break;
}
}
public void UpdateGroup(GroupUpdateMessage message)
{
GroupData groupChanged = message.GroupChanged;
switch (message.typeOfChange)
{
case ChangeType.Create:
ContactsDB.GroupsList.Add(groupChanged.Name, groupChanged);
break;
case ChangeType.Update:
ContactsDB.GroupsList[groupChanged.Name] = groupChanged;
break;
case ChangeType.Leave:
ContactsDB.RemoveGroup(groupChanged);
break;
case ChangeType.Delete:
ContactsDB.RemoveGroup(groupChanged);
break;
default:
break;
}
}
private void leaveGroup(GroupUpdateMessage message)
{
GroupData changedGroup = message.GroupChanged;
removeUserFromGroup((UserData)message.Source, changedGroup);
message.typeOfChange = ChangeType.Update;
_serverDTO.MembersDB.UpdateGroup(changedGroup);
_messageSender.SendCustomMessage((UserData)message.Source, "Left group successfully.");
NotifyUsersAboutGroupLeave(changedGroup, (UserData)message.Source);
_messageSender.UpdateUsersAboutGroupChange(message);
}
private void createNewGroup(GroupUpdateMessage message)
{
GroupData changedGroup = message.GroupChanged;
_serverDTO.ContactsDB.AddGroup(changedGroup);
Group newGroup = new Group(changedGroup);
_serverDTO.MembersDB.AddGroup(newGroup);
_messageSender.SendCustomMessage((UserData)message.Source, "Group created successfully.");
_messageSender.UpdateUsersAboutGroupChange(message);
}
private void removeGroup(GroupUpdateMessage message)
{
GroupData changedGroup = message.GroupChanged;
if (_serverDTO.ContactsDB.TryRemoveGroup(changedGroup, (UserData)message.Source))
{
_messageSender.UpdateUsersAboutGroupChange(message);
_serverDTO.MembersDB.RemoveGroup(changedGroup.Name);
_messageSender.SendCustomMessage((UserData)message.Source, "Group deleted successfully.");
return;
}
_messageSender.SendNotAuthorizedMessage((UserData)message.Source);
}
public void UpdateUsersAboutGroupChange(GroupUpdateMessage message)
{
// updates group members about the change
List <UserData> groupUsers = message.GroupChanged.Users;
foreach (var groupMember in groupUsers)
{
User user = _serverDTO.MembersDB.GetUser(groupMember.UID);
Console.WriteLine($"user {groupMember.Name} is in the group");
if (user != null)
{
Console.WriteLine($"user {user.Name} updated about group change");
_serverDTO.Serializer.Serialize(user.nwStream, message);
}
}
}
private void updateGroup(GroupUpdateMessage message)
{
GroupData changedGroup = message.GroupChanged;
GroupData originalGroup = (GroupData)(_serverDTO.ContactsDB.GetContactByName(changedGroup.Name));
if (_serverDTO.ContactsDB.TryUpdateGroup(changedGroup, (UserData)message.Source))
{
_serverDTO.MembersDB.UpdateGroup(changedGroup);
_messageSender.SendCustomMessage((UserData)message.Source, "Group updated successfully.");
_messageSender.UpdateUsersAboutGroupChange(message);
notifyUsersAboutGroupKick(changedGroup, originalGroup);
return;
}
_messageSender.SendNotAuthorizedMessage((UserData)message.Source);
}
private void notifyUsersAboutGroupKick(GroupData changedGroup, GroupData originalGroup)
{
List <UserData> removedUsers = originalGroup.Users.Where(user => !changedGroup.ContainsUser(user)).ToList();
if (removedUsers != null)
{
GroupData removedUserDatasGroup = new GroupData(originalGroup.Name, _serverDTO.AdminData);
removedUserDatasGroup.RemoveUser(_serverDTO.AdminData);
GroupUpdateMessage deteleGroup = new GroupUpdateMessage(removedUserDatasGroup, ChangeType.Delete,
_serverDTO.AdminData, _serverDTO.AdminData); // Send a delete GroupUpdateMessage to removed users
foreach (var removedUser in removedUsers)
{
removeUserFromGroup(removedUser, originalGroup);
User user = _serverDTO.MembersDB.GetUser(removedUser.UID);
TextMessage userMessageOfRemoval = new TextMessage($"You kicked out of {changedGroup.Name} group!",
_serverDTO.AdminData, (UserData)user.Data);
_messageSender.SendMessageToUser(user.nwStream, deteleGroup);
_messageSender.SendMessageToUser(user.nwStream, userMessageOfRemoval);
GroupMessage groupMessageOfRemoval = new GroupMessage($"{user.Name} kicked out of the group", _serverDTO.AdminData,
removedUserDatasGroup, removedUserDatasGroup);
}
}
}
private void processGroupUpdateMessage(GroupUpdateMessage msg)
{
_clientData.contactsManager.UpdateGroup(msg);
_clientData.contactsManager.UpdateContactsDB();
}
