- do let name = pageName page
- ret <- case pageUpdateInfo page of
- Just ui
- -> doReposTxn
- repos
- (uiOldRevision ui)
- "[Rakka]"
- (Just "Automatic commit by Rakka for page update")
- $ do case uiOldName ui of
- Nothing -> return ()
- Just oldName -> renamePage (uiOldRevision ui) oldName name
- updatePage name
- Nothing
- -> do fs <- getRepositoryFS repos
- rev <- getYoungestRev fs
- doReposTxn repos
- rev
- "[Rakka]"
- (Just "Automatic commit by Rakka for page creation")
- $ do createPage name
- updatePage name
- case ret of
- Left _ -> return Conflict
- Right _ -> return Created
+ do let name = pageName page
+ author = fromMaybe "[Rakka]" userID
+ case pageUpdateInfo page of
+ Just ui
+ -> do let oldRev = uiOldRevision ui
+ denied <- case uiOldName ui of
+ Nothing -> checkDenial oldRev name
+ Just oldName -> checkDenial oldRev oldName
+ if denied then
+ return Forbidden
+ else
+ do ret <- doReposTxn
+ repos
+ (uiOldRevision ui)
+ author
+ (Just "Automatic commit by Rakka for page update")
+ $ do case uiOldName ui of
+ Nothing -> return ()
+ Just oldName -> renamePage (uiOldRevision ui) oldName name
+ updatePage name
+ case ret of
+ Left _ -> return Conflict
+ Right _ -> return Created
+ Nothing
+ -> do fs <- getRepositoryFS repos
+ rev <- getYoungestRev fs
+ ret <- doReposTxn
+ repos
+ rev
+ author
+ (Just "Automatic commit by Rakka for page creation")
+ $ do createPage name
+ updatePage name
+ case ret of
+ Left _ -> return Conflict
+ Right _ -> return Created