/// <summary>Checks that the instance has no data.</summary>
public static bool IsEmpty(CommentPages value)
{
if(!String.IsNullOrWhiteSpace(value.FirstUrl))
return false;
if(!String.IsNullOrWhiteSpace(value.LastUrl))
return false;
if(!String.IsNullOrWhiteSpace(value.PrevUrl))
return false;
if(!String.IsNullOrWhiteSpace(value.NextUrl))
return false;
if(value.Current > 1 || value.Total > 1)
return false;
return true;
}
public EntryPage[] LoadOtherCommentPages(CommentPages commentPages, ILJClientData clientData)
{
int initialIndex = commentPages.Current;
int total = commentPages.Total;
log.Info(String.Format("Loading other comment pages given page №{0} out of {1}.", commentPages.Current, commentPages.Total));
// We need to download these.
int[] need = Enumerable.Range(1, total).Where(i => i != initialIndex).ToArray();
IDictionary<int, LiveJournalTarget> targets = new SortedDictionary<int, LiveJournalTarget>();
IDictionary<int, EntryPage> pages = new SortedDictionary<int, EntryPage>();
EntryPage p;
CommentPages latest = commentPages;
while(pages.Count < need.Length)
{
int cur = latest.Current;
if(cur != 1 && !String.IsNullOrWhiteSpace(latest.FirstUrl))
targets[1] = LiveJournalTarget.FromString(latest.FirstUrl);
if(cur != total && !String.IsNullOrWhiteSpace(latest.LastUrl))
targets[total] = LiveJournalTarget.FromString(latest.LastUrl);
if(!String.IsNullOrWhiteSpace(latest.PrevUrl))
targets[cur - 1] = LiveJournalTarget.FromString(latest.PrevUrl);
if(!String.IsNullOrWhiteSpace(latest.NextUrl))
targets[cur + 1] = LiveJournalTarget.FromString(latest.NextUrl);
// First target without a page.
int keyToDownload = targets.Keys.First(z => z != initialIndex && !pages.ContainsKey(z));
log.Info(String.Format("Will download page №{0}.", keyToDownload));
LiveJournalTarget targetToDownload = targets[keyToDownload];
// Download the page.
string content = _client.GetContent(targetToDownload, clientData);
p = _parser.ParseAsAnEntryPage(content);
latest = p.CommentPages;
pages[keyToDownload] = p;
log.Info(String.Format("Parsed page №{0}.", keyToDownload));
}
EntryPage[] ret = pages.Values.ToArray();
return ret;
}