MediaWiki/API/Query/DeletedRevisions/Import.hs

module MediaWiki.API.Query.DeletedRevisions.Import where

import MediaWiki.API.Types
import MediaWiki.API.Utils
import MediaWiki.API.Query.DeletedRevisions

import Text.XML.Light.Types
import Text.XML.Light.Proc ( strContent )

import Control.Monad
import Data.Maybe

stringXml :: String -> Either (String,[{-Error msg-}String]) DeletedRevisionsResponse
stringXml s = parseDoc xml s

xml :: Element -> Maybe DeletedRevisionsResponse
xml e = do
 guard (elName e == nsName "api")
 let es1 = children e
 p <- pNode "query" es1
 let es = children p
 ps <- fmap (mapMaybe xmlPage) (fmap children $ pNode "revisions" es)
 let cont = pNode "query-continue" es1 >>= xmlContinue "deletedrevs" "drstart"
 return emptyDeletedRevisionsResponse{drRevisions=ps,drContinue=cont}

xmlPage :: Element -> Maybe DeletedRevision
xmlPage e = do
 guard (elName e == nsName "page")
 let ns = fromMaybe "0" $ pAttr "ns" e
 let tit = fromMaybe "" $ pAttr "title" e
 let pid = pAttr "pageid" e
 let pg = emptyPageTitle{pgNS=ns,pgTitle=tit,pgMbId=pid}
 let ts = pAttr "timestamp" e
 let re = pAttr "revid" e
 let usr = pAttr "user" e
 let co = pAttr "comment" e
 let ism = isJust $ pAttr "minor" e
 let le = pAttr "len" e >>= readMb
 let cts = case (strContent e) of { "" -> Nothing; xs -> Just xs}
 let tok = pAttr "token" e
 return emptyDeletedRevision
 { drPage = pg
 , drTimestamp = ts
 , drRevId = re
 , drUser = usr
 , drComment = co
 , drIsMinor = ism
 , drLength = le
 , drContent = cts
 , drToken = tok
 }