import Lseed.Data
import Lseed.Data.Functions
import Lseed.DB
import Lseed.Grammar.Parse
import Lseed.Mainloop
import Control.Applicative
import Control.Monad
import Text.Printf
import System.Environment

getDBGarden conf = spread <$> map compileDBCode <$> getCodeToRun conf
  where spread gs = zipWith (\(u,n,g) p ->
 		 Planted ((fromIntegral p + 0.5) / l)
			 u
			 n
			 g
			 inititalPlant
		) gs [0..]
	  where l = fromIntegral (length gs)

compileDBCode dbc =
	case  parseGrammar "" (dbcCode dbc) of
		Left err          -> error (show err)
		Right grammarFile -> (dbcUserID dbc, dbcUserName dbc, grammarFile)

dbc2genome = either (error.show) id . parseGrammar "" . dbcCode

getDBUpdate conf planted = maybe (genome planted) dbc2genome <$>
                      getUpdatedCodeFromDB conf (plantOwner planted)

scoringObs conf = nullObserver {
	obFinished = \garden -> do
		forM_ garden $ \planted -> do
			printf "Plant from %d at %.4f: Total size %.4f\n"
				(plantOwner planted)
				(plantPosition planted)
				(plantLength (phenotype planted))
		addFinishedSeasonResults conf garden
	}

main = do
	args <- getArgs
	case args of
	  [conf] -> do
		lseedMainLoop False
			      (scoringObs conf)
			      (GardenSource (getDBGarden conf) (getDBUpdate conf) (return Nothing))
			      30
	  _ -> do
		putStrLn "L-Seed DB client application."
		putStrLn "Please pass DB configuration file on the command line."