private static string /*letter id*/ CreateLetterInternal(string board_id, string discussion_id,
string creator, string words, Subtype subtype, string delta_flags)
{
string partition_key = SandId.CombineId(board_id, discussion_id);
if (NextIdStore.GetLastId(Warehouse.DiscussionLoadTable, partition_key) >= HeartsConfiguration.MAX_NUM_OF_LETTERS_IN_A_DISCUSSION)
{
Util.ThrowBadRequestException("留言數超過上限（" + HeartsConfiguration.MAX_NUM_OF_LETTERS_IN_A_DISCUSSION + "）則。");
}
int next_id = NextIdStore.Next(Warehouse.DiscussionLoadTable, partition_key); // null reference exception for nonexistent board id.
string letter_id = SandId.MakeLetterId(next_id);
// if exception is thrown after getting id, the id is lost.
DynamicTableEntity entity = new DynamicTableEntity(partition_key, letter_id);
LetterConverter.CreateLetterEntity(entity, creator, words, subtype, delta_flags, board_id, discussion_id);
//
Warehouse.DiscussionLoadPond.Get(board_id, discussion_id).AddLetter(entity);
Warehouse.DiscussionSummaryPond.Get(board_id, discussion_id).AddLetter(entity);
Warehouse.DiscussionLoadTable.Execute(TableOperation.Insert(entity));
//
return(letter_id);
}
public static ControlHistory ControlLetter(string board_id, string discussion_id, string letter_id, string delta_flags)
{
string partition_key = SandId.CombineId(board_id, discussion_id);
// todo: select only needed properties.
TableResult result = Warehouse.DiscussionLoadTable.Execute(TableOperation.Retrieve(partition_key, letter_id));
DynamicTableEntity entity = (DynamicTableEntity)result.Result;
// permanent deleting twice is not blocked.
GroupStore.CheckControlRight(board_id, discussion_id, letter_id, ref delta_flags, entity);
int ec = RevisionStore.IncreaseEditCount(entity);
RevisionStore.CreateRevision(entity, board_id, discussion_id, letter_id, ec);
int prev_report_cnt = SandFlags.GetNumber(entity.GetFlags(), SandFlags.MT_REPORT);
LetterConverter.ModifyLetterFlags(entity, null, delta_flags);
int new_report_cnt = SandFlags.GetNumber(entity.GetFlags(), SandFlags.MT_REPORT);
Warehouse.DiscussionLoadTable.Execute(TableOperation.Replace(entity)); // Throws StorageException ((412) Precondition Failed) if the entity is modified in between.
Warehouse.DiscussionLoadPond.Notify(board_id, discussion_id);
Warehouse.DiscussionSummaryPond.Notify(board_id, discussion_id);
HttpResponse.RemoveOutputCacheItem("/discussionload/" + board_id + "/" + discussion_id);
return(new ControlHistory {
ReportCount = new_report_cnt - prev_report_cnt
});
}
public static void EditLetter(string board_id, string discussion_id, string letter_id, string editor, string words,
string delta_flags, HttpFileCollectionBase files)
{
string partition_key = SandId.CombineId(board_id, discussion_id);
TableResult result = Warehouse.DiscussionLoadTable.Execute(TableOperation.Retrieve(partition_key, letter_id));
DynamicTableEntity entity = (DynamicTableEntity)result.Result;
GroupStore.CheckEditRight(board_id, discussion_id, entity);
HashSet <string> files_set = new HashSet <string>();
words = processUploadFiles(words, files, files_set);
words = processWords(words);
claimFiles(words, SandId.CombineId(board_id, discussion_id, letter_id), files_set);
// if (entity != null) // let it throw null reference exception.
int ec = RevisionStore.IncreaseEditCount(entity);
RevisionStore.CreateRevision(entity, board_id, discussion_id, letter_id, ec);
LetterConverter.EditLetterEntity(entity, editor, words, delta_flags, board_id, discussion_id);
Warehouse.DiscussionLoadTable.Execute(TableOperation.Replace(entity)); // Throws StorageException ((412) Precondition Failed) if the entity is modified in between.
Warehouse.DiscussionLoadPond.Notify(board_id, discussion_id);
Warehouse.DiscussionSummaryPond.Notify(board_id, discussion_id);
HttpResponse.RemoveOutputCacheItem("/discussionload/" + board_id + "/" + discussion_id);
}
public static void CheckControlRight(string board_id, string discussion_id, string letter_id, ref string delta_flags,
DynamicTableEntity entity)
{
Subtype subtype = LetterConverter.GetSubtype(entity);
if (subtype == Subtype.d)
{
Util.ThrowUnauthorizedException("不能修改的類型。");
}
bool auto_unreport = false;
if (SandFlags.Check(delta_flags, SandFlags.MT_PERMANENT_DELETE, 1))
{
GroupStore.CheckPermanentDeleteRight(board_id, discussion_id, letter_id, entity);
auto_unreport = true;
}
int delete_num = SandFlags.GetNumber(delta_flags, SandFlags.MT_DELETED);
if (delete_num == 1 || delete_num == -1)
{
//bool is_undelete = SandFlags.Check(delta_flags, SandFlags.DELETED_FLAG_CHAR, -1);
int user_level = GroupStore.CheckDeleteRight(board_id, discussion_id, letter_id, entity, delete_num == -1);
//delta_flags = SandFlags.DELETED_FLAG_CHAR + (delete_num * user_level).ToString();
//delta_flags = SandFlags.MultiplyNumber(delta_flags, SandFlags.DELETED_FLAG_CHAR, user_level);
delta_flags = SandFlags.Operate(delta_flags, new FlagOperation
{
type = FlagOperation.Type.Multiply,
MetaTitle = SandFlags.MT_DELETED,
N = user_level
});
string current_flags = entity.GetFlags();
SandFlags.CheckLevel(current_flags, SandFlags.MT_DELETED, delta_flags);
auto_unreport = true;
}
if (SandFlags.Check(delta_flags, SandFlags.MT_REPORT, 0))
{
GroupStore.CheckUnreportRight(board_id);
}
else if (SandFlags.Check(delta_flags, SandFlags.MT_REPORT, 1))
{
}
else
{
if (auto_unreport)
{
delta_flags = SandFlags.Add(delta_flags, SandFlags.MT_REPORT, 0);
}
}
}
public static void CreateRevision(DynamicTableEntity letter_entity, string board_id, string discussion_id,
string letter_id, int version)
{
string partition_key = SandId.CombineId(board_id, discussion_id, letter_id);
DynamicTableEntity entity = new DynamicTableEntity(partition_key, SandId.MakeRevisionId(version));
LetterConverter.CopyLetterRevision(letter_entity, entity, version);
Warehouse.RevisionTable.Execute(TableOperation.Insert(entity)); // If an exception is thrown after revision created but before edit count in letter entity is updated, next time edit will fail because the revision already exists.
}
public static void CheckEditRight(string board_id, string discussion_id, DynamicTableEntity entity)
{
Subtype subtype = LetterConverter.GetSubtype(entity);
if (subtype == Subtype.d)
{
Util.ThrowUnauthorizedException("不能編輯的類型。");
}
if (!CreatorConverter.IsCurrentUserCreator(entity) &&
!DiscussionLoadStore.IsCurrentUserDiscussionCreator(board_id, discussion_id) &&
!IsBoardOwner(board_id))
{
Util.ThrowUnauthorizedException("沒有編輯權限。只有副板主以上、串主、或原作者可以編輯。");
}
}
private static void moveForeMeta()
{
Regex regex = new Regex(@"^>>(.+?)\n", RegexOptions.IgnoreCase | RegexOptions.Multiline | RegexOptions.CultureInvariant);
//Regex regex = new Regex(@"^>>(.+?)$", RegexOptions.IgnoreCase | RegexOptions.Multiline | RegexOptions.CultureInvariant);
// some abstract contain only ">>(0,0)" and no "\n".
string pkFilter = TableQuery.GenerateFilterCondition("PartitionKey", QueryComparisons.GreaterThanOrEqual, "");
TableQuery query = new TableQuery().Where(pkFilter).Select(new string[] { "flags2", "abstract" });
int count = 0;
foreach (DynamicTableEntity entity in Warehouse.DiscussionLoadTable.ExecuteQuery(query))
{
string flags = null;
string ab = LetterConverter.GetAbstract(entity);
if (ab != null)
{
ab = regex.Replace(ab, (Match match) =>
{
if (match.Groups[1].Value[0] == '(')
{
flags = entity.GetFlags();
flags = SandFlags.Add(flags, SandFlags.MT_COORDINATE, match.Groups[1].Value);
}
return(string.Empty);
});
}
if (flags != null)
{
count++;
entity["flags2"] = new EntityProperty(flags);
entity["abstract"] = new EntityProperty(ab);
Warehouse.DiscussionLoadTable.Execute(TableOperation.Merge(entity));
//if (count > 0)
// break;
}
}
}
public void AddLetter(DynamicTableEntity entity)
{
Subtype subtype = LetterConverter.GetSubtype(entity);
if (subtype == Subtype.h)
{
this.viewType = entity.GetViewType();
}
string json = LetterConverter.LetterToJson(entity, this.BoardId, this.DiscussionId, this.viewType);
if (subtype == Subtype.h)
{
if (this.headingJson == null)
{
this.headingJson = json;
}
}
else if (entity.RowKey == SandId.FIRST_SUBJECT_LETTER_ID)
{
if (this.subjectJson == null)
{
this.subjectJson = json;
}
}
else if (subtype == Subtype.s || subtype == Subtype.r)
{
this.replyQueue.Enqueue(json);
if (this.replyQueue.Count > REPLY_COUNT)
{
string dummy;
this.replyQueue.TryDequeue(out dummy);
}
}
// subtype d is ignored. when there are lots of subtype d, replies will be pushed out of queue.
}
private void addLetter(TextWriter writer, DynamicTableEntity entity)
{
LetterConverter.WriteForCrawler(writer, entity, false, null);
Subtype subtype = LetterConverter.GetSubtype(entity);
switch (subtype)
{
case Subtype.h:
if (this.Heading == null)
{
this.Heading = /*RemoveForeMeta*/ (LetterConverter.GetAbstract(entity));
}
break;
case Subtype.s:
// when subject is split to multiple segments, subtype s will be met multiple times.
if (this.Description == null)
{
this.Description = extractOgImage(LetterConverter.GetWholeWords(entity, false));
}
break;
}
}
