module Main where

import Control.Concurrent (threadDelay)

import qualified Control.Concurrent.STM as STM

import Control.Monad

import Control.Monad.RWS

import Data.IORef

import qualified Data.Matrix as M

import Graphics.Vty
import Graphics.Vty.CrossPlatform

import Network.Socket (Socket, close)

import Options.Applicative

-- internal imports

import Client.Communication
import Client.Game
import Client.Log
import Client.Types

import Library.Types

main :: IO ()
main = do
  putStrLn "Hello, Arena!"
  (Options logLevel socketLocation) <- execParser opts
  logPrintIO Info logLevel $ "connecting to Socket " <> socketLocation
  sock <- connectSocket socketLocation
  logPrintIO Info logLevel "connected"


  messageQueue <- STM.newTQueueIO
  eventQueue <- STM.newTQueueIO


  -- threadDelay $ 1 * 10 ^ 6
  mockClientState <- STM.newTMVarIO
    ( ClientState
      (error "trying to access vty of mock client state")
      False
    )
  let mockState =
        StateContainer
          (error "trying to access wizard of mock game state")
          mockClientState
          (error "trying to access map slice of mock game state")
          (error "trying to access stop condition of mock game state")
  sendMessage logLevel IdRequest sock
  clientIdMsg <- awaitResponse logLevel sock messageQueue mockState 0
  let clientId = acClientUUID clientIdMsg
  logPrintIO Info logLevel $ "received client UUID: " <> show clientId


  putStrLn welcomeText
  threadDelay $ 5 * 10 ^ (6 :: Int)


  sendMessage logLevel (ClientMessage clientId ClientRequestWizard) sock
  -- threadDelay $ 1 * 10 ^ 6
  playerWizard <- awaitResponse logLevel sock messageQueue mockState 1
  logPrintIO Info logLevel $ "received wizard: " <> show (initWizard playerWizard)

  vty <- mkVty defaultConfig
  hideCursor (outputIface vty)

  -- shut down graphical interface for now
  -- shutdown vty

  stopper <- newIORef False
  clientState <- STM.newTMVarIO (ClientState vty False)
  let initSlice = MapSlice (M.matrix 9 9 (const Nothing)) []
  let initRead = ReaderContainer sock clientId messageQueue eventQueue logLevel
      initState = StateContainer (initWizard playerWizard) clientState initSlice stopper
  -- putStrLn "sending quit message"
  -- sendMessage (ClientMessage clientId ClientQuit) sock
  logPrintIO Info logLevel "entering Game Monad"
  void $ execRWST
    (do
      terminateGameOnSigint stopper
      logPrint Verbose "entering main game function"
      runGame
    )
    initRead
    initState
  logPrintIO Info logLevel "Shutting down client…"
  showCursor (outputIface vty)
  shutdown vty
  threadDelay 1000
  logPrintIO Info logLevel "Closing connection to server…"
  close sock
  putStrLn "bye bye"
  where
    opts = info (options <**> helper)
      ( fullDesc
        <> progDesc "Run the \"wizard-wipeout\" Client."
        <> header "wizard-wipeout - Last Mage standing"
        )

welcomeText :: String
welcomeText = mconcat $ map (<> "\n")
  [ "Welcome to the arena, wizards."
  , ""
  , "Let the toughest and bravest of you survive"
  , ""
  , "Some last hints before you enter the fighting grounds:"
  , ""
  , "press [SPACE] to fire your wand"
  , "press [1] through [9] to change wands, if you have collected more wands"
  , "press [ESC] to leave"
  , ""
  , "Good Luck!"
  ]

awaitResponse
  :: LogLevel
  -> Socket
  -> STM.TQueue ServerMessage
  -> StateContainer
  -> Int
  -> IO ServerMessage
awaitResponse _ _ _ _ 10 = error "Tries to communicate with server exceeded"
awaitResponse curLevel sock messageQueue mockState numTries = do
  receiveMessage curLevel sock messageQueue mockState
  responsePresent <- not <$> STM.atomically (STM.isEmptyTQueue messageQueue)
  if responsePresent
  then STM.atomically $ STM.readTQueue messageQueue
  else do
    threadDelay $ 10 ^ (6 :: Int)
    awaitResponse curLevel sock messageQueue mockState (numTries + 1)