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{-# LANGUAGE RecordWildCards #-}
module RSS (renderFeed) where
import qualified Data.Text as T
import Control.Monad (liftM)
import Data.Maybe (fromMaybe)
import Data.Time (UTCTime(..), getCurrentTime, secondsToDiffTime)
import Network.URI
import Text.RSS
import BlogStore
import Locales
createChannel :: BlogLang -> UTCTime -> [ChannelElem]
createChannel l now = [ Language $ show l
, Copyright "Vincent Ambo"
, WebMaster "tazjin@gmail.com"
, ChannelPubDate now
]
createRSS :: BlogLang -> UTCTime -> [Item] -> RSS
createRSS l t = RSS (rssTitle l) (rssLink l) (rssDesc l) (createChannel l t)
createItem :: Entry -> Item
createItem Entry{..} = [ Title $ T.unpack title
, Link $ makeLink lang entryId
, Description $ T.unpack btext
, PubDate $ UTCTime edate $ secondsToDiffTime 0 ]
makeLink :: BlogLang -> EntryId -> URI
makeLink l i = let url = "http://tazj.in/" ++ show l ++ "/" ++ show i
in fromMaybe nullURI $ parseURI url
createItems :: [Entry] -> [Item]
createItems = map createItem
createFeed :: BlogLang -> [Entry] -> IO RSS
createFeed l e = getCurrentTime >>= (\t -> return $ createRSS l t $ createItems e )
renderFeed :: BlogLang -> [Entry] -> IO String
renderFeed l e = liftM (showXML . rssToXML) (createFeed l e)
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