protected virtual ResourceBE BuildResourceRev(ResourceBE currentRevision) {
currentRevision.AssertHeadRevision();
//Clone the resource revision
ResourceBE newRev = new ResourceBE(currentRevision) {
ChangeMask = ResourceBE.ChangeOperations.UNDEFINED,
Timestamp = DateTime.UtcNow,
UserId = DekiContext.Current.User.ID,
ChangeSetId = 0,
Deleted = false,
ChangeDescription = null,
IsHidden = false,
Meta = currentRevision.Meta
};
//Initialize for new revision (clear anything that shouldn't be carried over from current rev)
return newRev;
}
/// <summary>
/// Move this attachment to the target page.
/// </summary>
/// <remarks>
/// This will fail if destination page has a file with the same name.
/// </remarks>
/// <param name="sourcePage">Current file location</param>
/// <param name="targetPage">Target file location. May be same as sourcepage for rename</param>
/// <param name="name">New filename or null for no change</param>
/// <returns></returns>
public ResourceBE MoveAttachment(ResourceBE attachment, PageBE sourcePage, PageBE targetPage, string name, bool loggingEnabled) {
//TODO MaxM: Connect with a changeset
uint changeSetId = 0;
attachment.AssertHeadRevision();
bool move = targetPage != null && targetPage.ID != sourcePage.ID;
bool rename = name != null && !name.EqualsInvariant(attachment.Name);
//Just return the current revision if no change is being made
if(!move && !rename) {
return attachment;
}
//validate filename
if(rename) {
name = ValidateFileName(name);
}
//Check the resource exists on the target (may be same as source page) with new name (if given) or current name
ResourceBE existingAttachment = GetPageAttachment((targetPage ?? sourcePage).ID, name ?? attachment.Name);
if(existingAttachment != null) {
throw new AttachmentExistsOnPageConflictException(name ?? attachment.Name, (targetPage ?? sourcePage).Title.AsUserFriendlyName());
}
//Performing a move?
if(move) {
_dekiContext.Instance.Storage.MoveFile(attachment, targetPage); //Perform the IStorage move (should be a no-op)
}
//Build the new revision
ResourceBE newRevision = BuildRevForMoveAndRename(attachment, targetPage, name, changeSetId);
//Insert new revision into DB
try {
newRevision = SaveResource(newRevision);
} catch {
//failed to save the revision, undo the file move with the IStorage. (Should be a no-op)
if(move) {
_dekiContext.Instance.Storage.MoveFile(attachment, sourcePage);
}
throw;
//NOTE MaxM: file rename does not even touch IStorage. No need to undo it
}
//Notification for file move
if(loggingEnabled) {
if(move) {
RecentChangeBL.AddFileRecentChange(_dekiContext.Now, sourcePage, _dekiContext.User, DekiResources.FILE_MOVED_TO(attachment.Name, targetPage.Title.AsPrefixedUserFriendlyPath()), changeSetId);
RecentChangeBL.AddFileRecentChange(_dekiContext.Now, targetPage, _dekiContext.User, DekiResources.FILE_MOVED_FROM(attachment.Name, sourcePage.Title.AsPrefixedUserFriendlyPath()), changeSetId);
}
if(rename) {
RecentChangeBL.AddFileRecentChange(_dekiContext.Now, sourcePage, _dekiContext.User, DekiResources.FILE_RENAMED_TO(attachment.Name, name), changeSetId);
}
}
//Notification for file rename and move use same event
_dekiContext.Instance.EventSink.AttachmentMove(_dekiContext.Now, attachment, sourcePage, _dekiContext.User);
return newRevision;
}