/// <summary>
/// Gets the last (previous) article in the list
/// </summary>
/// <param name="clientUsername">Authenticated username</param>
/// <param name="groupName">Newsgroup name</param>
/// <returns>Article object</returns>
public Article GetLastArticleByNumber(string clientUsername, string groupName, int articleNumber)
{
Newsgroup group = GetNewsgroup(clientUsername, groupName, true);
int newArticleNo = articleNumber - 1;
while (newArticleNo >= group.FirstArticle)
{
var a = GetArticleByNumber(clientUsername, groupName, newArticleNo);
if (a != null)
{
return(a);
}
newArticleNo--;
}
return(null);
}
///// <summary>
///// Returns the article based on the given number
///// </summary>
///// <param name="clientUsername">Authenticated username</param>
///// <param name="groupName">Newsgroup name</param>
///// <param name="articleNumber">Article number</param>
///// <returns>Article object</returns>
//public Article GetArticleByNumber(string clientUsername, string groupName, int articleNumber)
//{
// Newsgroup group = GetNewsgroup(clientUsername, groupName);
// if (group != null)
// {
// lock (group.Articles)
// {
// try
// {
// Article article = group.Articles[articleNumber];
// return article;
// }
// catch (KeyNotFoundException)
// {
// //System.Diagnostics.Trace.WriteLine("Article [" + articleNumber.ToString() + "] in group [" + groupName + "] not found");
// }
// catch (Exception ex)
// {
// Logging.Error("Failed to access article list for group [" + groupName + "]", ex);
// }
// }
// }
// return null;
//}
/// <summary>
/// Gets the next article in the list from the given position
/// </summary>
/// <param name="clientUsername">Authenticated username</param>
/// <param name="groupName">Newsgroup name</param>
/// <param name="articleNumber">Number of the article</param>
/// <returns>Article object</returns>
public Article GetNextArticleByNumber(string clientUsername, string groupName, int articleNumber)
{
Newsgroup group = GetNewsgroup(clientUsername, groupName, true);
int newArticleNo = articleNumber + 1;
while (newArticleNo <= group.LastArticle)
{
var a = GetArticleByNumber(clientUsername, groupName, newArticleNo);
if (a != null)
{
return(a);
}
newArticleNo++;
}
return(null);
//bool returnNextArticle = false;
//if (group != null)
//{
// lock (group.Articles)
// {
// foreach (KeyValuePair<int, Article> key in group.Articles)
// {
// if (returnNextArticle)
// {
// return key.Value;
// }
// if (key.Value.Number == articleNumber)
// {
// returnNextArticle = true;
// }
// }
// }
//}
//
//return null;
}
