public int addComment(int firstMessageID, int publisherID, string publisherName, string title, string body)
{
if ((title == null) || (title.Equals("")))
{
throw new ArgumentException(error_emptyTitle);
}
if (!IsValidMessage(title, body))
{
throw new ArgumentException(error_wrongWords);
}
FirstMessage first = (FirstMessage)findMessage(firstMessageID);
//checking if firstMessageID exists and really FirstMessage
if ((first != null) && (first.isFirst()))
{
lastMessageID++;
int messageId = lastMessageID;
ResponseMessage rm = new ResponseMessage(messageId, publisherID, publisherName, title, body);
first.addResponse(rm);
messages.Add(rm);
saveMessageDB();
return(rm.MessageID);
}
throw new InvalidOperationException(error_messageIdNotFound);
}
public List <CommentInfo> GetAllThreadComments(int firstMessageId)
{
List <CommentInfo> ans = new List <CommentInfo>();
CommentInfo cur = new CommentInfo();
Message firstMessage = findMessage(firstMessageId);
if (firstMessage == null)
{
return(null);
}
FirstMessage fm = (FirstMessage)firstMessage;
if (fm.isFirst())
{
foreach (ResponseMessage rm in fm.ResponseMessages)
{
cur.Id = rm.MessageID;
cur.topic = rm.Title;
cur.content = rm.Content;
cur.date = rm.PublishDate;
cur.publisher = rm.PublisherName;
ans.Add(cur);
}
}
return(ans);
}
public Thread GetFirstMessageThread(FirstMessage fm)
{
Thread trd;
List <Thread> threads = DBthreadMan.getAll();
for (int i = 0; i < threads.Count; i++)
{
if (threads.ElementAt(i).GetMessage() == fm)
{
trd = threads.ElementAt(i);
return(trd);
}
}
return(null);
}
public bool deleteMessage(int userRequesterId, int messageID)
{
Message ms = findMessage(messageID);
if (ms != null)
{
if ((!(ms.publisherID != userRequesterId)) && (!(userRequesterId != 1)))
{
throw new UnauthorizedAccessException("User " + userRequesterId + " has no permissions to delete the message " + messageID);
}
// if firstMessage, it should be deleted with all its comments
if (ms.isFirst())
{
FirstMessage fm = (FirstMessage)ms;
HashSet <ResponseMessage> messagesForDeletion = fm.ResponseMessages;
while (messagesForDeletion.Count > 0)
{
ResponseMessage rm = messagesForDeletion.ElementAt(0);
fm.removeRespone(rm);
messages.Remove(rm);
}
messages.Remove(fm);
//removing firstMessage pointer from its thread
Thread trd = GetFirstMessageThread(fm);
DBthreadMan.remove(trd);
}
// if responseMessage, should delete itself and the pointer from its firstMessage
else
{
ResponseMessage rm = (ResponseMessage)ms;
FirstMessage fm = GetFirstMessage(rm);
fm.removeRespone(rm);
messages.Remove(rm);
}
saveMessageDB();
return(true);
}
throw new InvalidOperationException(error_messageIdNotFound);
}
public Thread(int forumId, int subForumId, int messageId, int publisherID, string publisherName, string title, string body)
{
this.forumId = forumId;
this.subForumId = subForumId;
firstMessage = new FirstMessage(messageId, publisherID, publisherName, title, body);
}
public ResponseMessage(FirstMessage firstMessage, int messageId, int publisherID, string title, string body) :
base(messageId, publisherID, title, body)
{
this.firstMessage = firstMessage;
}