static private void GetEvents(Journal.OptionsRow or, ILJServer iLJ, ref SyncItemCollection sic,
ref SyncItemCollection deletedsic, ref EventCollection ec)
{
// for an explanation of this algorithm, see
// http://www.livejournal.com/community/lj_clients/143312.html
// note that this is a very painful algorithm. it will loop an extra time for each
// deleted syncitem that getevents doesn't return an event for. if LJ decides to revise
// how they return syncitems, this algorithm can be made more efficient.
int total = sic.Count;
while (sic.Count > 0)
{
SyncItem oldest = sic.GetOldest();
DateTime oldestTime = DateTime.Parse(oldest.time, CultureInfo.InvariantCulture).AddSeconds(-1);
GetChallengeResponse gcr = iLJ.GetChallenge();
string auth_response = MD5Hasher.Compute(gcr.challenge + or.HPassword);
GetEventsParams gep = new GetEventsParams(or.UserName, "challenge", gcr.challenge,
auth_response, 1, 0, 0, 0, "syncitems", oldestTime.ToString(_datetimeformat), 0, 0, 0, 0,
string.Empty, 0, "unix", (or.IsUseJournalNull() ? string.Empty : or.UseJournal));
GetEventsResponse ger;
socb(new SyncOperationEventArgs(SyncOperation.GetEvents, total - sic.Count, total));
ger = iLJ.GetEvents(gep);
// remove this item in case it isn't returned by getevents
// this signifies that the item has been deleted
// this also ensures we don't get stuck in an endless loop
sic.Remove(oldest);
sic.RemoveDownloaded(ger.events);
deletedsic.RemoveDownloaded(ger.events);
ec.AddRange(ger.events);
}
}
static private void ThreadStart()
{
// The main threaded execution body for performing a sync.
// This method is chopped up into smaller methods for clarity and structure.
ILJServer iLJ;
Journal.OptionsRow or = null;
SyncItemCollection sic = null, deletedsic = null;
EventCollection ec = null;
CommentCollection ccbody = null, ccmeta = null;
UserMapCollection umc = null;
LoginResponse lr = new LoginResponse();
string communityPicURL = null;
DateTime lastSync = DateTime.MinValue;
SessionGenerateResponse sgr;
int serverMaxID, localMaxID;
try
{
// STEP 1: Initialize
socb(new SyncOperationEventArgs(SyncOperation.Initialize, 0, 0));
syncException = null;
or = j.Options;
iLJ = LJServerFactory.Create(or.ServerURL);
sic = new SyncItemCollection();
deletedsic = new SyncItemCollection();
ec = new EventCollection();
ccmeta = new CommentCollection();
ccbody = new CommentCollection();
umc = new UserMapCollection();
// STEP 2: Login
socb(new SyncOperationEventArgs(SyncOperation.Login, 0, 0));
lr = new LoginResponse();
Login(or, iLJ, ref lr, ref communityPicURL);
// STEP 3: SyncItems
socb(new SyncOperationEventArgs(SyncOperation.SyncItems, 0, 0));
lastSync = DateTime.MinValue;
SyncItems(or, iLJ, ref sic, ref deletedsic, ref lastSync);
// STEP 4: GetEvents
socb(new SyncOperationEventArgs(SyncOperation.GetEvents, 0, 0));
GetEvents(or, iLJ, ref sic, ref deletedsic, ref ec);
if (or.GetComments)
{
// STEP 5: SessionGenerate
socb(new SyncOperationEventArgs(SyncOperation.SessionGenerate, 0, 0));
sgr = new SessionGenerateResponse();
SessionGenerate(or, iLJ, ref sgr);
// STEP 6: ExportCommentsMeta
socb(new SyncOperationEventArgs(SyncOperation.ExportCommentsMeta, 0, 0));
localMaxID = serverMaxID = j.GetMaxCommentID();
ExportCommentsMeta(or, iLJ, sgr, ref serverMaxID, localMaxID, umc, ccmeta);
// STEP 7: ExportCommentsBody
socb(new SyncOperationEventArgs(SyncOperation.ExportCommentsBody, 0, 0));
ExportCommentsBody(or, iLJ, sgr, serverMaxID, localMaxID, ccbody);
}
}
catch (Exception ex)
{
ParseException(ex, ref syncException);
if (ex.GetType() == typeof(ThreadAbortException))
{
socb(new SyncOperationEventArgs(SyncOperation.Failure, 0, 0)); // do this before thread terminates
return;
}
}
// STEP 8: Merge
try
{
if (syncException == null)
{
socb(new SyncOperationEventArgs(SyncOperation.Merge, 0, 0));
Merge(j, ec, ccmeta, ccbody, umc, deletedsic, lr, communityPicURL, lastSync);
socb(new SyncOperationEventArgs(SyncOperation.Success, ec.Count, ccbody.Count));
}
else if (syncException.GetType() == typeof(ExpectedSyncException) &&
(((ExpectedSyncException)syncException).ExpectedError == ExpectedError.ServerNotResponding ||
((ExpectedSyncException)syncException).ExpectedError ==
ExpectedError.ExportCommentsNotSupported ||
((ExpectedSyncException)syncException).ExpectedError ==
ExpectedError.CommunityAccessDenied) &&
lr.moods != null)
{
socb(new SyncOperationEventArgs(SyncOperation.Merge, 0, 0));
if (sic.Count > 0)
{
lastSync = DateTime.Parse(sic.GetOldest().time, CultureInfo.InvariantCulture).AddSeconds(-1);
}
Merge(j, ec, ccmeta, ccbody, umc, deletedsic, lr, communityPicURL, lastSync);
socb(new SyncOperationEventArgs(SyncOperation.PartialSync, ec.Count, ccbody.Count));
}
else
{
socb(new SyncOperationEventArgs(SyncOperation.Failure, 0, 0));
}
}
catch (Exception ex)
{
syncException = ex;
socb(new SyncOperationEventArgs(SyncOperation.Failure, 0, 0));
}
}