{-# LANGUAGE OverloadedStrings #-}

import qualified Data.CaseInsensitive as CI
import Data.List (sortBy)
import Data.Maybe
import qualified Data.Map as Map
import Data.Monoid ((<>))
import Data.Ord (comparing) -- , Down(..))
import Data.Text (Text)
import qualified Data.Text as T
import qualified Data.Text.IO as TIO
import Data.Yaml

import System.Environment (getArgs)

data Client = Client {
    _assignee :: Text
  , _status :: Text
  , _clientname :: Text
  , _filename :: Text -- should be ByteString?
}

toClient :: Map.Map Text Text -> Client
toClient ymap = Client user status client filename
   where
      user = fromMaybe "ERROR" (Map.lookup "AssignedTo" ymap)
      status = fromMaybe "ERROR" (Map.lookup "Status" ymap)
      client = fromMaybe "ERROR" (Map.lookup "ClientName" ymap)
      filename = fromMaybe "ERROR" (Map.lookup "filename" ymap)

formatClient :: Client -> Text
formatClient c = T.concat [pad 10 (_assignee c), pad 7 (_status c), _clientname c, " (", _filename c, ")"]
    where
        pad x = T.justifyLeft x ' '

printIfNonEmpty :: [Client] -> IO ()
printIfNonEmpty = mapM_ (TIO.putStrLn . formatClient)

main :: IO ()
main = do
         yamlcache <- decodeFile "/home/report/tmp/yamlcache.yaml"
         args <- fmap (map T.pack) getArgs
	 let ymap = fromJust yamlcache -- fix that
	     cs = map toClient ymap
             statusopen = cs
             useropen = if null args then statusopen else filter (\m -> elem (_assignee m) args) statusopen
             uoclients = filter (\m -> "Client/" `T.isPrefixOf` (_filename m) && T.find (=='/') (T.drop 7 (_filename m)) == Nothing) useropen
         printIfNonEmpty (sortBy (comparing (CI.mk . _clientname) <> comparing _assignee <> flip (comparing (_status))) uoclients) -- Down