module Role.Watcher where

import Types
import Log
import Pty
import CmdLine
import SessionID
import Role.Developer

import Control.Concurrent.STM
import Control.Concurrent.STM.TMChan
import Data.Time.Clock.POSIX

run :: WatchOpts -> IO ()
run = run' watcher . watchUrl

watcher :: TMVar (TVar DeveloperState) -> TMChan (Message Entered) -> TMChan AnyMessage -> SessionID -> IO ()
watcher dsv _ichan ochan sid = withSessionLogger sid $ \logger -> inRawMode $ do
	(st, startoutput) <- processSessionStart ochan logger dsv
	emitOutput startoutput
	go logger st
  where
	go logger st = do
		ts <- getPOSIXTime
		v <- atomically $ getServerMessage ochan st ts
		case v of
			Nothing -> return ()
			Just (o, msg) -> do
				_ <- logger msg
				emitOutput o
				go logger st