/// <summary>
/// Добавить в избранные треды.
/// </summary>
/// <param name="link">Ссылка.</param>
/// <param name="info">Информация о треде.</param>
/// <param name="reportError">Показать ошибку на экране.</param>
/// <returns>Треды.</returns>
public static async Task AddToFavoriteThreads(this BoardLinkBase link, ShortThreadInfo info = null, bool reportError = true)
{
if (link != null)
{
try
{
var storage = ServiceLocator.Current.GetServiceOrThrow<IStorageService>();
var linkHash = ServiceLocator.Current.GetServiceOrThrow<ILinkHashService>();
var threadProcess = ServiceLocator.Current.GetServiceOrThrow<IThreadTreeProcessService>();
var comparer = linkHash.GetComparer();
var hash = linkHash.GetLinkHash(link);
var favs = await storage.ThreadData.FavoriteThreads.LoadLinkCollection() as ThreadLinkCollection;
if (favs == null)
{
favs = new ThreadLinkCollection();
}
if (favs.Links == null)
{
favs.Links = new List<BoardLinkBase>();
}
if (favs.ThreadInfo == null)
{
favs.ThreadInfo = new Dictionary<string, ShortThreadInfo>();
}
if (favs.Links.Any(f => comparer.Equals(f, link)))
{
return;
}
if (info == null)
{
var visited = await storage.ThreadData.VisitedThreads.LoadLinkCollectionForReadOnly() as ThreadLinkCollection;
if (visited?.ThreadInfo != null)
{
if (visited.ThreadInfo.ContainsKey(hash))
{
info = visited.ThreadInfo[hash];
}
}
}
if (info == null)
{
var data = await storage.ThreadData.LoadThread(link);
if (data != null)
{
info = threadProcess.GetShortInfo(data);
}
}
if (info == null)
{
throw new InvalidOperationException("Информация о треде не найдена");
}
var pc = await storage.ThreadData.LoadPostCountInfo(link) ?? PostCountInfo.Create(link);
favs.Links.Add(link);
favs.Links = favs.Links.Deduplicate(f => f, comparer).ToList();
var favInfo = new FavoriteThreadInfo()
{
CountInfo = pc,
SmallImage = info.SmallImage,
Title = info.Title,
AddedDate = DateTime.Now,
CreatedDate = info.CreatedDate,
UpdatedDate = info.UpdatedDate,
ViewDate = info.ViewDate
};
favs.ThreadInfo[hash] = favInfo;
await storage.ThreadData.FavoriteThreads.SaveLinkCollection(favs);
}
catch (Exception ex)
{
if (reportError)
{
await AppHelpers.ShowError(ex);
}
else
{
DebugHelper.BreakOnError(ex);
}
}
finally
{
ViewModelEvents.FavoritesListRefreshed.RaiseEvent(link, null);
}
}
}
/// <summary>
/// Изменились посещённые.
/// </summary>
/// <param name="visited">Посещённые.</param>
public void VisitedChanged(ThreadLinkCollection visited)
{
if (visited?.ThreadInfo != null)
{
threadInfo = visited.ThreadInfo.ContainsKey(hash) ? visited.ThreadInfo[hash] : null;
}
}
private static bool IsUpdated(ShortThreadInfo info)
{
var info2 = info as FavoriteThreadInfo;
if (info2 == null || info2.CountInfo == null)
{
return false;
}
return info2.CountInfo.PostCount > info2.CountInfo.LoadedPostCount;
}