public StatusNotification(TwitterStatus status, bool isAdded)
{
Debug.Assert(status != null, "status could not be null.");
this.Status = status;
this.StatusId = status.Id;
this.IsAdded = isAdded;
}
public static bool IsMuted(TwitterStatus status)
{
return !AccountsStore.AccountIds.Contains(status.User.Id) &&
(Setting.Muteds.Evaluator(status) || status.RetweetedOriginal != null &&
Setting.ApplyMuteToRetweetOriginals.Value &&
Setting.Muteds.Evaluator(status.RetweetedOriginal));
}
private bool CheckVisibleTimeline(TwitterStatus status, IEnumerable<AccountRelationData> datas)
{
if (status.StatusType == StatusType.DirectMessage)
return false;
return datas.Any(ad =>
status.User.Id == ad.AccountId ||
ad.IsFollowing(status.User.Id) ||
FilterSystemUtil.InReplyToUsers(status).Contains(ad.AccountId));
}
public static IObservable<TwitterStatus> MergeStore(TwitterStatus status)
{
return StatusStore.Get(status.Id)
.ConcatIfEmpty(() =>
{
StatusStore.Store(status);
return Observable.Return(status);
});
}
/// <summary>
/// Store a tweet.
/// </summary>
/// <param name="status">storing status</param>
/// <param name="publish">flag of publish status for other listening children</param>
public static void Store(TwitterStatus status, bool publish = true)
{
if (_isInShutdown) return;
if (publish)
{
_statusPublisher.OnNext(new StatusNotification(status, true));
}
Task.Run(() => _store.Store(status));
UserStore.Store(status.User);
}
public static IObservable<TwitterStatus> NotifyAndMergeStore(TwitterStatus status)
{
return StatusStore.Get(status.Id)
.ConcatIfEmpty(() =>
{
StatusStore.Store(status);
NotificationModel.NotifyNewArrival(status);
return Observable.Return(status);
});
}
public static async Task<StatusModel> Get(TwitterStatus status)
{
status = await StatusStore.Get(status.Id)
.DefaultIfEmpty(status)
.FirstAsync();
var rto = status.RetweetedOriginal == null
? null
: await Get(status.RetweetedOriginal);
var lockerobj = _generateLock.GetOrAdd(status.Id, new object());
try
{
lock (lockerobj)
{
StatusModel model;
WeakReference wr;
lock (_staticCacheLock)
{
_staticCache.TryGetValue(status.Id, out wr);
}
if (wr != null)
{
model = (StatusModel)wr.Target;
if (model != null)
{
return model;
}
}
// cache is dead/not cached yet
model = new StatusModel(status, rto);
wr = new WeakReference(model);
lock (_staticCacheLock)
{
_staticCache[status.Id] = wr;
}
return model;
}
}
finally
{
_generateLock.TryRemove(status.Id, out lockerobj);
// ReSharper disable InvertIf
#pragma warning disable 4014
if (Interlocked.Increment(ref _cleanupCount) == CleanupInterval)
{
Interlocked.Exchange(ref _cleanupCount, 0);
Task.Run((Action)CollectGarbages);
}
#pragma warning restore 4014
// ReSharper restore InvertIf
}
}
private static void PostDetected(TwitterStatus status)
{
// check timestamp
if (status.CreatedAt < DateTime.Now - TimeSpan.FromSeconds(Setting.PostWindowTimeSec.Value))
{
return;
}
// lookup chunk
LinkedList<TwitterStatus> statuses;
lock (_dictLock)
{
if (!_dictionary.TryGetValue(status.User.Id, out statuses))
{
return;
}
}
lock (statuses)
{
// find insert position
var afterThis =
statuses.First == null
? null
: EnumerableEx.Generate(statuses.First, n => n.Next != null, n => n.Next, n => n)
.TakeWhile(n => n.Value.Id >= status.Id)
.LastOrDefault();
if (afterThis == null)
{
statuses.AddFirst(status);
}
else if (afterThis.Value.Id == status.Id)
{
return;
}
else
{
statuses.AddAfter(afterThis, status);
}
LinkedListNode<TwitterStatus> last;
var stamp = DateTime.Now - TimeSpan.FromSeconds(Setting.PostWindowTimeSec.Value);
while ((last = statuses.Last) != null)
{
if (last.Value.CreatedAt >= stamp)
{
break;
}
// timeout
statuses.RemoveLast();
}
}
}
private bool CheckConversation(TwitterStatus status)
{
lock (_statuses)
{
if (_statuses.Contains(status.Id))
{
return true;
}
if (status.InReplyToStatusId == null) return false;
if (_statuses.Contains(status.InReplyToStatusId.Value))
{
_statuses.Add(status.Id);
return true;
}
}
return false;
}
private StatusModel(TwitterStatus status)
{
Status = status;
ImageResolver.Resolve(status.GetEntityAidedText(true))
.Aggregate(new List<Tuple<Uri, Uri>>(), (l, i) =>
{
l.Add(i);
return l;
})
.Finally(() =>
{
var subj = Interlocked.Exchange(ref _imagesSubject, null);
subj.OnCompleted();
subj.Dispose();
})
.Subscribe(l => Images = l);
}
public static IEnumerable<long> InReplyToUsers(TwitterStatus status)
{
if (status.Entities == null)
return Enumerable.Empty<long>();
return status.Entities
.Where(e => e.EntityType == EntityType.UserMentions)
.Select(e =>
{
try
{
return long.Parse(e.OriginalText);
}
catch
{
return 0;
}
}).Where(_ => _ != 0);
}
// ReSharper restore TooWideLocalVariableScope
// ReSharper restore FunctionNeverReturns
private static bool ValidateStatus(TwitterStatus status)
{
if (_cacheInvalid)
{
var nbs = new AVLTree<long>();
AccountRelationDataStore.AccountRelations
.SelectMany(a => a.Blockings)
.ForEach(nbs.Add);
_blockings = nbs;
_cacheInvalid = false;
}
if (_predicateInvalid)
{
_muteEval = Setting.Muteds.Evaluator;
_predicateInvalid = false;
}
if (_blockings.Contains(status.User.Id)) return false;
if (_muteEval(status)) return false;
return status.RetweetedOriginal == null || ValidateStatus(status.RetweetedOriginal);
}
private static void PostDetected(TwitterStatus status)
{
// check timestamp
if (status.CreatedAt < DateTime.Now - TimeSpan.FromSeconds(Setting.PostWindowTimeSec.Value))
return;
// lookup chunk
LinkedList<TwitterStatus> statuses;
lock (_dictLock)
{
if (!_dictionary.TryGetValue(status.User.Id, out statuses)) return;
}
lock (statuses)
{
// find insert position
var afterThis = statuses.FirstOrDefault(t => t.Id <= status.Id);
// check duplication
if (afterThis.Id == status.Id) return;
}
}
private async void AddStatus(TwitterStatus status)
{
bool add;
lock (_sicLocker)
{
add = _statusIdCache.AddDistinct(status.Id);
}
if (!add) return;
// estimate point
var model = await StatusModel.Get(status);
var stamp = model.Status.CreatedAt;
if (!this._isSuppressTimelineTrimming)
{
StatusModel lastModel;
if (this.Statuses.TryIndexOf(TimelineChunkCount, out lastModel) &&
lastModel != null &&
lastModel.Status.CreatedAt > stamp)
{
lock (this._sicLocker)
{
this._statusIdCache.Remove(model.Status.Id);
}
return;
}
}
this._statuses.Insert(
i => i.TakeWhile(s => s.Status.CreatedAt > stamp).Count(),
model);
if (this._statusIdCache.Count > TimelineChunkCount + TimelineChunkCountBounce &&
Interlocked.Exchange(ref this._trimCount, 1) == 0)
{
#pragma warning disable 4014
Task.Run(() => this.TrimTimeline());
#pragma warning restore 4014
}
var handler = this.NewStatusArrival;
if (handler != null)
handler(status);
}
public static void NotifyFavorited(TwitterUser source, TwitterStatus target)
{
Action<TwitterStatusEvent> handler = OnFavorited;
if (handler != null)
handler(new TwitterStatusEvent(source, target));
}
public PostResult(AuthenticateInfo info, TwitterStatus status)
{
AuthInfo = info;
IsSucceeded = true;
Status = status;
}
public TwitterEventBase(TwitterUser source, TwitterStatus target)
: this(source, target.User)
{
this._targetStatus = target;
}
private static IEnumerable<Inline> GenerateInlines(DependencyObject obj, TwitterStatus status)
{
if (status.RetweetedOriginal != null)
status = status.RetweetedOriginal; // change target
var escaped = XmlParser.EscapeEntity(status.Text);
TwitterEntity prevEntity = null;
foreach (var entity in status.Entities.Guard().OrderBy(e => e.StartIndex))
{
int pidx = 0;
if (prevEntity != null)
pidx = prevEntity.EndIndex;
if (pidx < entity.StartIndex)
{
// output raw
yield return GenerateText(XmlParser.ResolveEntity(escaped.Substring(pidx, entity.StartIndex - pidx)));
}
switch (entity.EntityType)
{
case EntityType.Hashtags:
yield return GenerateHashtagLink(obj, XmlParser.ResolveEntity(entity.DisplayText));
break;
case EntityType.Media:
case EntityType.Urls:
yield return GenerateLink(obj, entity.DisplayText, XmlParser.ResolveEntity(entity.OriginalText));
break;
case EntityType.UserMentions:
yield return GenerateUserLink(obj, entity.DisplayText, XmlParser.ResolveEntity(entity.DisplayText));
break;
}
prevEntity = entity;
}
if (prevEntity == null)
{
yield return GenerateText(status.Text);
}
else if (prevEntity.EndIndex < status.Text.Length)
{
yield return GenerateText(
XmlParser.ResolveEntity(escaped.Substring(prevEntity.EndIndex, status.Text.Length - prevEntity.EndIndex)));
}
}
public static void SetTwitterStatus(DependencyObject obj, TwitterStatus value)
{
obj.SetValue(TwitterStatusProperty, value);
}
private StatusViewModel GenerateStatusViewModel(TwitterStatus status)
{
return new StatusViewModel(this, status, Model.BindingAccountIds);
}
public RetweetedEvent(TwitterUser source, TwitterStatus target)
: base(source, target)
{
}
public static void UpdateStatusInfo(TwitterStatus status,
Action<StatusModel> ifCacheIsAlive,
Action<TwitterStatus> ifCacheIsDead)
{
WeakReference wr;
lock (_staticCacheLock)
{
_staticCache.TryGetValue(status.Id, out wr);
}
if (wr != null)
{
var target = (StatusModel)wr.Target;
if (wr.IsAlive)
{
ifCacheIsAlive(target);
StatusStore.Store(target.Status);
return;
}
}
StatusStore.Get(status.Id)
.DefaultIfEmpty(status)
.Subscribe(s =>
{
ifCacheIsDead(s);
StatusStore.Store(s);
});
}
private StatusModel(TwitterStatus status, StatusModel retweetedOriginal)
: this(status)
{
this.RetweetedOriginal = retweetedOriginal;
}
public TwitterStatusEvent(TwitterUser source, TwitterStatus target)
{
Source = source;
Target = target;
}
public TrophyScceededEvent(TwitterStatus status)
{
Status = status;
}
public static void NotifyDeleted(TwitterStatus deleted)
{
Action<TwitterStatus> handler = OnDeleted;
if (handler != null)
handler(deleted);
}
public FavoritedEvent(TwitterUser source, TwitterStatus target)
: base(source, target)
{
}
public static void NotifyReceived(TwitterStatus status)
{
Action<TwitterStatus> handler = OnReceived;
if (handler != null)
handler(status);
}
public TrophyFailedEvent(TwitterStatus status, string response)
{
Status = status;
Response = response;
}
public static void NotifyRetweeted(TwitterUser source, TwitterStatus status)
{
Action<TwitterStatusEvent> handler = OnRetweeted;
if (handler != null)
handler(new TwitterStatusEvent(source, status));
}