/// <summary>
/// Get a list of all the unprocess email ids
/// We don't return the emails as anotehr thread could 'change' those values.
/// </summary>
/// <param name="folder">The folder we are working in</param>
/// <param name="limit"></param>
/// <param name="includeSubfolders"></param>
/// <param name="restrictFolder">the filter we want to use to look in the folder.</param>
/// <param name="token"></param>
/// <returns></returns>
private IList <string> GetUnprocessedEmailsInFolder(
Outlook.MAPIFolder folder,
int limit,
bool includeSubfolders,
string restrictFolder,
CancellationToken token)
{
// do the sub folders.
var ids = new List <string>();
if (includeSubfolders)
{
ids.AddRange(GetUnprocessedEmailsInFolders(folder.Folders, limit, true, restrictFolder, token));
}
// is it a mail folder?
if (folder.DefaultItemType != Outlook.OlItemType.olMailItem)
{
return(ids);
}
var restrictedItems = string.IsNullOrWhiteSpace(restrictFolder) ? folder.Items : folder.Items.Restrict(restrictFolder);
// add an more items to the progress bar
_progress.AddRange(restrictedItems.Count, limit);
foreach (var item in restrictedItems)
{
if (token.IsCancellationRequested)
{
return(new List <string>());
}
// step forward.
_progress.Step();
// get the mail item
if (!(item is Outlook._MailItem mailItem))
{
continue;
}
try
{
// add this to the mail processor...
ids.Add(mailItem.EntryID);
_logger.LogInformation($"Found unprocessed email...{mailItem.Subject}.");
if (ids.Count >= limit)
{
break;
}
}
catch (Exception e)
{
_logger.LogError("There was an exception looking at unprocessed folder");
_logger.LogException(e);
}
}
return(ids);
}
