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{-# LANGUAGE RecordWildCards #-}
module RSS
( renderFeed
)
where
import BlogStore
import Data.Maybe (fromJust)
import qualified Data.Text as T
import Data.Time (UTCTime (..), getCurrentTime, secondsToDiffTime)
import Network.URI (URI, parseURI)
import Text.RSS
createChannel :: UTCTime -> [ChannelElem]
createChannel now =
[ Language "en",
Copyright "Vincent Ambo",
WebMaster "mail@tazj.in",
ChannelPubDate now
]
createRSS :: UTCTime -> [Item] -> RSS
createRSS t =
let link = fromJust $ parseURI "https://tazj.in"
in RSS "tazjin's blog" link "tazjin's blog feed" (createChannel t)
createItem :: Entry -> Item
createItem Entry {..} =
[ Title "tazjin's blog",
Link $ entryLink entryId,
Description $ T.unpack text,
PubDate $ UTCTime edate $ secondsToDiffTime 0
]
entryLink :: EntryId -> URI
entryLink i =
let url = "http://tazj.in/" ++ "/" ++ show i
in fromJust $ parseURI url
createItems :: [Entry] -> [Item]
createItems = map createItem
createFeed :: [Entry] -> IO RSS
createFeed e = getCurrentTime >>= (\t -> return $ createRSS t $ createItems e)
renderFeed :: [Entry] -> IO String
renderFeed e = fmap (showXML . rssToXML) (createFeed e)
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