{-# LANGUAGE GeneralizedNewtypeDeriving #-}
-- | The implementation of our custom game server monads. Just as any other
-- component of the library, this implementation can be substituted.
module Implementation.MonadServerImplementation
  ( executorSer
#ifdef EXPOSE_INTERNAL
    -- * Internal operations
  , SerState(..), SerImplementation(..)
#endif
  ) where

import Prelude ()

import Game.LambdaHack.Core.Prelude

import           Control.Concurrent
import           Control.Concurrent.Async
import qualified Control.Exception as Ex
import qualified Control.Monad.IO.Class as IO
import           Control.Monad.Trans.State.Strict hiding (State)
import qualified Data.EnumMap.Strict as EM
import qualified Data.Text.IO as T
import           Options.Applicative
  (defaultPrefs, execParserPure, handleParseResult)
import           System.Exit (ExitCode)
import           System.IO (hFlush, stdout)

import           Game.LambdaHack.Atomic
import           Game.LambdaHack.Client
import           Game.LambdaHack.Common.Kind
import           Game.LambdaHack.Common.MonadStateRead
import qualified Game.LambdaHack.Common.Save as Save
import           Game.LambdaHack.Common.State
import           Game.LambdaHack.Common.Thread
import           Game.LambdaHack.Server
import           Game.LambdaHack.Server.BroadcastAtomic
import           Game.LambdaHack.Server.HandleAtomicM
import           Game.LambdaHack.Server.MonadServer
import           Game.LambdaHack.Server.ProtocolM
import           Game.LambdaHack.Server.State

import Implementation.MonadClientImplementation (executorCli)

data SerState = SerState
  { SerState -> State
serState  :: State             -- ^ current global state
  , SerState -> StateServer
serServer :: StateServer       -- ^ current server state
  , SerState -> ConnServerDict
serDict   :: ConnServerDict    -- ^ client-server connection information
  , SerState -> ChanSave (State, StateServer)
serToSave :: Save.ChanSave (State, StateServer)
                                       -- ^ connection to the save thread
  }

-- | Server state transformation monad.
newtype SerImplementation a =
    SerImplementation {forall a. SerImplementation a -> StateT SerState IO a
runSerImplementation :: StateT SerState IO a}
  deriving (Applicative SerImplementation
Applicative SerImplementation =>
(forall a b.
 SerImplementation a
 -> (a -> SerImplementation b) -> SerImplementation b)
-> (forall a b.
    SerImplementation a -> SerImplementation b -> SerImplementation b)
-> (forall a. a -> SerImplementation a)
-> Monad SerImplementation
forall a. a -> SerImplementation a
forall a b.
SerImplementation a -> SerImplementation b -> SerImplementation b
forall a b.
SerImplementation a
-> (a -> SerImplementation b) -> SerImplementation b
forall (m :: * -> *).
Applicative m =>
(forall a b. m a -> (a -> m b) -> m b)
-> (forall a b. m a -> m b -> m b)
-> (forall a. a -> m a)
-> Monad m
$c>>= :: forall a b.
SerImplementation a
-> (a -> SerImplementation b) -> SerImplementation b
>>= :: forall a b.
SerImplementation a
-> (a -> SerImplementation b) -> SerImplementation b
$c>> :: forall a b.
SerImplementation a -> SerImplementation b -> SerImplementation b
>> :: forall a b.
SerImplementation a -> SerImplementation b -> SerImplementation b
$creturn :: forall a. a -> SerImplementation a
return :: forall a. a -> SerImplementation a
Monad, (forall a b.
 (a -> b) -> SerImplementation a -> SerImplementation b)
-> (forall a b. a -> SerImplementation b -> SerImplementation a)
-> Functor SerImplementation
forall a b. a -> SerImplementation b -> SerImplementation a
forall a b. (a -> b) -> SerImplementation a -> SerImplementation b
forall (f :: * -> *).
(forall a b. (a -> b) -> f a -> f b)
-> (forall a b. a -> f b -> f a) -> Functor f
$cfmap :: forall a b. (a -> b) -> SerImplementation a -> SerImplementation b
fmap :: forall a b. (a -> b) -> SerImplementation a -> SerImplementation b
$c<$ :: forall a b. a -> SerImplementation b -> SerImplementation a
<$ :: forall a b. a -> SerImplementation b -> SerImplementation a
Functor, Functor SerImplementation
Functor SerImplementation =>
(forall a. a -> SerImplementation a)
-> (forall a b.
    SerImplementation (a -> b)
    -> SerImplementation a -> SerImplementation b)
-> (forall a b c.
    (a -> b -> c)
    -> SerImplementation a
    -> SerImplementation b
    -> SerImplementation c)
-> (forall a b.
    SerImplementation a -> SerImplementation b -> SerImplementation b)
-> (forall a b.
    SerImplementation a -> SerImplementation b -> SerImplementation a)
-> Applicative SerImplementation
forall a. a -> SerImplementation a
forall a b.
SerImplementation a -> SerImplementation b -> SerImplementation a
forall a b.
SerImplementation a -> SerImplementation b -> SerImplementation b
forall a b.
SerImplementation (a -> b)
-> SerImplementation a -> SerImplementation b
forall a b c.
(a -> b -> c)
-> SerImplementation a
-> SerImplementation b
-> SerImplementation c
forall (f :: * -> *).
Functor f =>
(forall a. a -> f a)
-> (forall a b. f (a -> b) -> f a -> f b)
-> (forall a b c. (a -> b -> c) -> f a -> f b -> f c)
-> (forall a b. f a -> f b -> f b)
-> (forall a b. f a -> f b -> f a)
-> Applicative f
$cpure :: forall a. a -> SerImplementation a
pure :: forall a. a -> SerImplementation a
$c<*> :: forall a b.
SerImplementation (a -> b)
-> SerImplementation a -> SerImplementation b
<*> :: forall a b.
SerImplementation (a -> b)
-> SerImplementation a -> SerImplementation b
$cliftA2 :: forall a b c.
(a -> b -> c)
-> SerImplementation a
-> SerImplementation b
-> SerImplementation c
liftA2 :: forall a b c.
(a -> b -> c)
-> SerImplementation a
-> SerImplementation b
-> SerImplementation c
$c*> :: forall a b.
SerImplementation a -> SerImplementation b -> SerImplementation b
*> :: forall a b.
SerImplementation a -> SerImplementation b -> SerImplementation b
$c<* :: forall a b.
SerImplementation a -> SerImplementation b -> SerImplementation a
<* :: forall a b.
SerImplementation a -> SerImplementation b -> SerImplementation a
Applicative)

instance MonadStateRead SerImplementation where
  {-# INLINE getsState #-}
  getsState :: forall a. (State -> a) -> SerImplementation a
getsState State -> a
f = StateT SerState IO a -> SerImplementation a
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO a -> SerImplementation a)
-> StateT SerState IO a -> SerImplementation a
forall a b. (a -> b) -> a -> b
$ (SerState -> a) -> StateT SerState IO a
forall (m :: * -> *) s a. Monad m => (s -> a) -> StateT s m a
gets ((SerState -> a) -> StateT SerState IO a)
-> (SerState -> a) -> StateT SerState IO a
forall a b. (a -> b) -> a -> b
$ State -> a
f (State -> a) -> (SerState -> State) -> SerState -> a
forall b c a. (b -> c) -> (a -> b) -> a -> c
. SerState -> State
serState

instance MonadStateWrite SerImplementation where
  {-# INLINE modifyState #-}
  modifyState :: (State -> State) -> SerImplementation ()
modifyState State -> State
f = StateT SerState IO () -> SerImplementation ()
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO () -> SerImplementation ())
-> StateT SerState IO () -> SerImplementation ()
forall a b. (a -> b) -> a -> b
$ (SerState -> ((), SerState)) -> StateT SerState IO ()
forall (m :: * -> *) s a. Monad m => (s -> (a, s)) -> StateT s m a
state ((SerState -> ((), SerState)) -> StateT SerState IO ())
-> (SerState -> ((), SerState)) -> StateT SerState IO ()
forall a b. (a -> b) -> a -> b
$ \SerState
serS ->
    let !newSerS :: SerState
newSerS = SerState
serS {serState = f $ serState serS}
    in ((), SerState
newSerS)
  {-# INLINE putState #-}
  putState :: State -> SerImplementation ()
putState State
newSerState = StateT SerState IO () -> SerImplementation ()
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO () -> SerImplementation ())
-> StateT SerState IO () -> SerImplementation ()
forall a b. (a -> b) -> a -> b
$ (SerState -> ((), SerState)) -> StateT SerState IO ()
forall (m :: * -> *) s a. Monad m => (s -> (a, s)) -> StateT s m a
state ((SerState -> ((), SerState)) -> StateT SerState IO ())
-> (SerState -> ((), SerState)) -> StateT SerState IO ()
forall a b. (a -> b) -> a -> b
$ \SerState
serS ->
    let !newSerS :: SerState
newSerS = SerState
serS {serState = newSerState}
    in ((), SerState
newSerS)

instance MonadServer SerImplementation where
  {-# INLINE getsServer #-}
  getsServer :: forall a. (StateServer -> a) -> SerImplementation a
getsServer   StateServer -> a
f = StateT SerState IO a -> SerImplementation a
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO a -> SerImplementation a)
-> StateT SerState IO a -> SerImplementation a
forall a b. (a -> b) -> a -> b
$ (SerState -> a) -> StateT SerState IO a
forall (m :: * -> *) s a. Monad m => (s -> a) -> StateT s m a
gets ((SerState -> a) -> StateT SerState IO a)
-> (SerState -> a) -> StateT SerState IO a
forall a b. (a -> b) -> a -> b
$ StateServer -> a
f (StateServer -> a) -> (SerState -> StateServer) -> SerState -> a
forall b c a. (b -> c) -> (a -> b) -> a -> c
. SerState -> StateServer
serServer
  {-# INLINE modifyServer #-}
  modifyServer :: (StateServer -> StateServer) -> SerImplementation ()
modifyServer StateServer -> StateServer
f = StateT SerState IO () -> SerImplementation ()
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO () -> SerImplementation ())
-> StateT SerState IO () -> SerImplementation ()
forall a b. (a -> b) -> a -> b
$ (SerState -> ((), SerState)) -> StateT SerState IO ()
forall (m :: * -> *) s a. Monad m => (s -> (a, s)) -> StateT s m a
state ((SerState -> ((), SerState)) -> StateT SerState IO ())
-> (SerState -> ((), SerState)) -> StateT SerState IO ()
forall a b. (a -> b) -> a -> b
$ \SerState
serS ->
    let !newSerS :: SerState
newSerS = SerState
serS {serServer = f $ serServer serS}
    in ((), SerState
newSerS)
  chanSaveServer :: SerImplementation (ChanSave (State, StateServer))
chanSaveServer = StateT SerState IO (ChanSave (State, StateServer))
-> SerImplementation (ChanSave (State, StateServer))
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO (ChanSave (State, StateServer))
 -> SerImplementation (ChanSave (State, StateServer)))
-> StateT SerState IO (ChanSave (State, StateServer))
-> SerImplementation (ChanSave (State, StateServer))
forall a b. (a -> b) -> a -> b
$ (SerState -> ChanSave (State, StateServer))
-> StateT SerState IO (ChanSave (State, StateServer))
forall (m :: * -> *) s a. Monad m => (s -> a) -> StateT s m a
gets SerState -> ChanSave (State, StateServer)
serToSave
  liftIO :: forall a. IO a -> SerImplementation a
liftIO         = StateT SerState IO a -> SerImplementation a
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO a -> SerImplementation a)
-> (IO a -> StateT SerState IO a) -> IO a -> SerImplementation a
forall b c a. (b -> c) -> (a -> b) -> a -> c
. IO a -> StateT SerState IO a
forall a. IO a -> StateT SerState IO a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
IO.liftIO

instance MonadServerComm SerImplementation where
  {-# INLINE getsDict #-}
  getsDict :: forall a. (ConnServerDict -> a) -> SerImplementation a
getsDict ConnServerDict -> a
f = StateT SerState IO a -> SerImplementation a
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO a -> SerImplementation a)
-> StateT SerState IO a -> SerImplementation a
forall a b. (a -> b) -> a -> b
$ (SerState -> a) -> StateT SerState IO a
forall (m :: * -> *) s a. Monad m => (s -> a) -> StateT s m a
gets ((SerState -> a) -> StateT SerState IO a)
-> (SerState -> a) -> StateT SerState IO a
forall a b. (a -> b) -> a -> b
$ ConnServerDict -> a
f (ConnServerDict -> a)
-> (SerState -> ConnServerDict) -> SerState -> a
forall b c a. (b -> c) -> (a -> b) -> a -> c
. SerState -> ConnServerDict
serDict
  {-# INLINE putDict #-}
  putDict :: ConnServerDict -> SerImplementation ()
putDict ConnServerDict
newSerDict = StateT SerState IO () -> SerImplementation ()
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO () -> SerImplementation ())
-> StateT SerState IO () -> SerImplementation ()
forall a b. (a -> b) -> a -> b
$ (SerState -> ((), SerState)) -> StateT SerState IO ()
forall (m :: * -> *) s a. Monad m => (s -> (a, s)) -> StateT s m a
state ((SerState -> ((), SerState)) -> StateT SerState IO ())
-> (SerState -> ((), SerState)) -> StateT SerState IO ()
forall a b. (a -> b) -> a -> b
$ \SerState
serS ->
    let !newSerS :: SerState
newSerS = SerState
serS {serDict = newSerDict}
    in ((), SerState
newSerS)
  liftIO :: forall a. IO a -> SerImplementation a
liftIO = StateT SerState IO a -> SerImplementation a
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO a -> SerImplementation a)
-> (IO a -> StateT SerState IO a) -> IO a -> SerImplementation a
forall b c a. (b -> c) -> (a -> b) -> a -> c
. IO a -> StateT SerState IO a
forall a. IO a -> StateT SerState IO a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
IO.liftIO

instance MonadServerAtomic SerImplementation where
  execUpdAtomic :: UpdAtomic -> SerImplementation ()
execUpdAtomic UpdAtomic
cmd = do
    oldState <- SerImplementation State
forall (m :: * -> *). MonadStateRead m => m State
getState
    (ps, atomicBroken, executedOnServer) <- handleCmdAtomicServer cmd
    when executedOnServer $ cmdAtomicSemSer oldState cmd
    handleAndBroadcast ps atomicBroken (UpdAtomic cmd)
  execUpdAtomicSer :: UpdAtomic -> SerImplementation Bool
execUpdAtomicSer UpdAtomic
cmd = StateT SerState IO Bool -> SerImplementation Bool
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO Bool -> SerImplementation Bool)
-> StateT SerState IO Bool -> SerImplementation Bool
forall a b. (a -> b) -> a -> b
$ (SerState -> IO (Bool, SerState)) -> StateT SerState IO Bool
forall s (m :: * -> *) a. (s -> m (a, s)) -> StateT s m a
StateT ((SerState -> IO (Bool, SerState)) -> StateT SerState IO Bool)
-> (SerState -> IO (Bool, SerState)) -> StateT SerState IO Bool
forall a b. (a -> b) -> a -> b
$ \SerState
cliS -> do
    cliSNewOrE <- IO SerState -> IO (Either AtomicFail SerState)
forall e a. Exception e => IO a -> IO (Either e a)
Ex.try
                  (IO SerState -> IO (Either AtomicFail SerState))
-> IO SerState -> IO (Either AtomicFail SerState)
forall a b. (a -> b) -> a -> b
$ StateT SerState IO () -> SerState -> IO SerState
forall (m :: * -> *) s a. Monad m => StateT s m a -> s -> m s
execStateT (SerImplementation () -> StateT SerState IO ()
forall a. SerImplementation a -> StateT SerState IO a
runSerImplementation (SerImplementation () -> StateT SerState IO ())
-> SerImplementation () -> StateT SerState IO ()
forall a b. (a -> b) -> a -> b
$ UpdAtomic -> SerImplementation ()
forall (m :: * -> *). MonadStateWrite m => UpdAtomic -> m ()
handleUpdAtomic UpdAtomic
cmd)
                               SerState
cliS
    case cliSNewOrE of
      Left AtomicFail{} -> (Bool, SerState) -> IO (Bool, SerState)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Bool
False, SerState
cliS)
      Right !SerState
cliSNew ->
        -- We know @cliSNew@ differs only in @serState@.
        (Bool, SerState) -> IO (Bool, SerState)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Bool
True, SerState
cliSNew)
  execUpdAtomicFid :: FactionId -> UpdAtomic -> SerImplementation ()
execUpdAtomicFid FactionId
fid UpdAtomic
cmd = StateT SerState IO () -> SerImplementation ()
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO () -> SerImplementation ())
-> StateT SerState IO () -> SerImplementation ()
forall a b. (a -> b) -> a -> b
$ (SerState -> IO ((), SerState)) -> StateT SerState IO ()
forall s (m :: * -> *) a. (s -> m (a, s)) -> StateT s m a
StateT ((SerState -> IO ((), SerState)) -> StateT SerState IO ())
-> (SerState -> IO ((), SerState)) -> StateT SerState IO ()
forall a b. (a -> b) -> a -> b
$ \SerState
cliS -> do
    -- Don't catch anything; assume exceptions impossible.
    let sFid :: State
sFid = StateServer -> EnumMap FactionId State
sclientStates (SerState -> StateServer
serServer SerState
cliS) EnumMap FactionId State -> FactionId -> State
forall k a. Enum k => EnumMap k a -> k -> a
EM.! FactionId
fid
    cliSNew <- StateT SerState IO () -> SerState -> IO SerState
forall (m :: * -> *) s a. Monad m => StateT s m a -> s -> m s
execStateT (SerImplementation () -> StateT SerState IO ()
forall a. SerImplementation a -> StateT SerState IO a
runSerImplementation (SerImplementation () -> StateT SerState IO ())
-> SerImplementation () -> StateT SerState IO ()
forall a b. (a -> b) -> a -> b
$ UpdAtomic -> SerImplementation ()
forall (m :: * -> *). MonadStateWrite m => UpdAtomic -> m ()
handleUpdAtomic UpdAtomic
cmd)
                          SerState
cliS {serState = sFid}
    -- We know @cliSNew@ differs only in @serState@.
    let serServerNew = (SerState -> StateServer
serServer SerState
cliS)
          {sclientStates = EM.insert fid (serState cliSNew)
                           $ sclientStates $ serServer cliS}
        !newCliS = SerState
cliS {serServer = serServerNew}
    return ((), newCliS)
  execUpdAtomicFidCatch :: FactionId -> UpdAtomic -> SerImplementation Bool
execUpdAtomicFidCatch FactionId
fid UpdAtomic
cmd = StateT SerState IO Bool -> SerImplementation Bool
forall a. StateT SerState IO a -> SerImplementation a
SerImplementation (StateT SerState IO Bool -> SerImplementation Bool)
-> StateT SerState IO Bool -> SerImplementation Bool
forall a b. (a -> b) -> a -> b
$ (SerState -> IO (Bool, SerState)) -> StateT SerState IO Bool
forall s (m :: * -> *) a. (s -> m (a, s)) -> StateT s m a
StateT ((SerState -> IO (Bool, SerState)) -> StateT SerState IO Bool)
-> (SerState -> IO (Bool, SerState)) -> StateT SerState IO Bool
forall a b. (a -> b) -> a -> b
$ \SerState
cliS -> do
    let sFid :: State
sFid = StateServer -> EnumMap FactionId State
sclientStates (SerState -> StateServer
serServer SerState
cliS) EnumMap FactionId State -> FactionId -> State
forall k a. Enum k => EnumMap k a -> k -> a
EM.! FactionId
fid
    cliSNewOrE <- IO SerState -> IO (Either AtomicFail SerState)
forall e a. Exception e => IO a -> IO (Either e a)
Ex.try
                  (IO SerState -> IO (Either AtomicFail SerState))
-> IO SerState -> IO (Either AtomicFail SerState)
forall a b. (a -> b) -> a -> b
$ StateT SerState IO () -> SerState -> IO SerState
forall (m :: * -> *) s a. Monad m => StateT s m a -> s -> m s
execStateT (SerImplementation () -> StateT SerState IO ()
forall a. SerImplementation a -> StateT SerState IO a
runSerImplementation (SerImplementation () -> StateT SerState IO ())
-> SerImplementation () -> StateT SerState IO ()
forall a b. (a -> b) -> a -> b
$ UpdAtomic -> SerImplementation ()
forall (m :: * -> *). MonadStateWrite m => UpdAtomic -> m ()
handleUpdAtomic UpdAtomic
cmd)
                               SerState
cliS {serState = sFid}
    case cliSNewOrE of
      Left AtomicFail{} -> (Bool, SerState) -> IO (Bool, SerState)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Bool
False, SerState
cliS)
      Right SerState
cliSNew -> do
        -- We know @cliSNew@ differs only in @serState@.
        let serServerNew :: StateServer
serServerNew = (SerState -> StateServer
serServer SerState
cliS)
              {sclientStates = EM.insert fid (serState cliSNew)
                               $ sclientStates $ serServer cliS}
            !newCliS :: SerState
newCliS = SerState
cliS {serServer = serServerNew}
        (Bool, SerState) -> IO (Bool, SerState)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Bool
True, SerState
newCliS)
  execSfxAtomic :: SfxAtomic -> SerImplementation ()
execSfxAtomic SfxAtomic
sfx = do
    ps <- SfxAtomic -> SerImplementation PosAtomic
forall (m :: * -> *). MonadStateRead m => SfxAtomic -> m PosAtomic
posSfxAtomic SfxAtomic
sfx
    handleAndBroadcast ps [] (SfxAtomic sfx)
  execSendPer :: FactionId
-> LevelId
-> Perception
-> Perception
-> Perception
-> SerImplementation ()
execSendPer = FactionId
-> LevelId
-> Perception
-> Perception
-> Perception
-> SerImplementation ()
forall (m :: * -> *).
(MonadServerAtomic m, MonadServerComm m) =>
FactionId
-> LevelId -> Perception -> Perception -> Perception -> m ()
sendPer

-- Don't inline this, to keep GHC hard work inside the library
-- for easy access of code analysis tools.
-- | Run the main server loop, with the given arguments and empty
-- initial states, in the @IO@ monad.
executorSer :: COps -> CCUI -> ServerOptions -> UIOptions -> IO ()
executorSer :: COps -> CCUI -> ServerOptions -> UIOptions -> IO ()
executorSer cops :: COps
cops@COps{RuleContent
corule :: RuleContent
corule :: COps -> RuleContent
corule} CCUI
ccui ServerOptions
soptionsNxtCmdline UIOptions
sUIOptions = do
  soptionsNxtRaw <- case UIOptions -> [String]
uOverrideCmdline UIOptions
sUIOptions of
    []   -> ServerOptions -> IO ServerOptions
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return ServerOptions
soptionsNxtCmdline
    [String]
args -> ParserResult ServerOptions -> IO ServerOptions
forall a. ParserResult a -> IO a
handleParseResult (ParserResult ServerOptions -> IO ServerOptions)
-> ParserResult ServerOptions -> IO ServerOptions
forall a b. (a -> b) -> a -> b
$ ParserPrefs
-> ParserInfo ServerOptions
-> [String]
-> ParserResult ServerOptions
forall a. ParserPrefs -> ParserInfo a -> [String] -> ParserResult a
execParserPure ParserPrefs
defaultPrefs ParserInfo ServerOptions
serverOptionsPI [String]
args
  -- Options for the clients modified with the configuration file.
  let clientOptions = COps -> UIOptions -> ClientOptions -> ClientOptions
applyUIOptions COps
cops UIOptions
sUIOptions
                      (ClientOptions -> ClientOptions) -> ClientOptions -> ClientOptions
forall a b. (a -> b) -> a -> b
$ ServerOptions -> ClientOptions
sclientOptions ServerOptions
soptionsNxtRaw
      soptionsNxt = ServerOptions
soptionsNxtRaw {sclientOptions = clientOptions}
      -- Partially applied main loop of the clients.
      executorClient Bool
startsNewGame =
        CCUI
-> UIOptions
-> ClientOptions
-> Bool
-> COps
-> FactionId
-> ChanServer
-> IO ()
executorCli CCUI
ccui UIOptions
sUIOptions ClientOptions
clientOptions Bool
startsNewGame COps
cops
  -- Wire together game content, the main loop of game clients
  -- and the game server loop.
  let stateToFileName (State
_, StateServer
ser) =
        ServerOptions -> String
ssavePrefixSer (StateServer -> ServerOptions
soptions StateServer
ser) String -> String -> String
forall a. Semigroup a => a -> a -> a
<> RuleContent -> String
Save.saveNameSer RuleContent
corule
      totalState ChanSave (State, StateServer)
serToSave = SerState
        { serState :: State
serState = (COps -> COps) -> State -> State
updateCOpsAndCachedData (COps -> COps -> COps
forall a b. a -> b -> a
const COps
cops) State
emptyState
            -- state is empty, so the cached data is left empty and untouched
        , serServer :: StateServer
serServer = StateServer
emptyStateServer
        , serDict :: ConnServerDict
serDict = ConnServerDict
forall k a. EnumMap k a
EM.empty
        , ChanSave (State, StateServer)
serToSave :: ChanSave (State, StateServer)
serToSave :: ChanSave (State, StateServer)
serToSave
        }
      m = ServerOptions
-> (Bool -> FactionId -> ChanServer -> IO ())
-> SerImplementation ()
forall (m :: * -> *).
(MonadServerAtomic m, MonadServerComm m) =>
ServerOptions -> (Bool -> FactionId -> ChanServer -> IO ()) -> m ()
loopSer ServerOptions
soptionsNxt Bool -> FactionId -> ChanServer -> IO ()
executorClient
      exe = StateT SerState IO () -> SerState -> IO ()
forall (m :: * -> *) s a. Monad m => StateT s m a -> s -> m a
evalStateT (SerImplementation () -> StateT SerState IO ()
forall a. SerImplementation a -> StateT SerState IO a
runSerImplementation SerImplementation ()
m) (SerState -> IO ())
-> (ChanSave (State, StateServer) -> SerState)
-> ChanSave (State, StateServer)
-> IO ()
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ChanSave (State, StateServer) -> SerState
totalState
      exeWithSaves = COps
-> ((State, StateServer) -> String)
-> (ChanSave (State, StateServer) -> IO ())
-> IO ()
forall a.
Binary a =>
COps -> (a -> String) -> (ChanSave a -> IO ()) -> IO ()
Save.wrapInSaves COps
cops (State, StateServer) -> String
stateToFileName ChanSave (State, StateServer) -> IO ()
exe
      unwrapEx SomeException
e = case SomeException -> Maybe ExceptionInLinkedThread
forall e. Exception e => SomeException -> Maybe e
Ex.fromException SomeException
e of
        Just (ExceptionInLinkedThread Async a
_ SomeException
ex) -> SomeException -> SomeException
unwrapEx SomeException
ex
        Maybe ExceptionInLinkedThread
_ -> SomeException
e
  -- Wait for clients to exit even in case of server crash
  -- (or server and client crash), which gives them time to save
  -- and report their own inconsistencies, if any.
  Ex.handle (\SomeException
ex -> case SomeException -> Maybe ExitCode
forall e. Exception e => SomeException -> Maybe e
Ex.fromException (SomeException -> SomeException
unwrapEx SomeException
ex) :: Maybe ExitCode of
               Just{} ->
                 -- User-forced shutdown, not crash, so the intention is
                 -- to keep old saves and also clients may be not ready to save.
                 SomeException -> IO ()
forall e a. (HasCallStack, Exception e) => e -> IO a
Ex.throwIO SomeException
ex
               Maybe ExitCode
_ -> do
                 IO () -> IO ()
forall a. IO a -> IO a
Ex.uninterruptibleMask_ (IO () -> IO ()) -> IO () -> IO ()
forall a b. (a -> b) -> a -> b
$ Int -> IO ()
threadDelay Int
1000000
                   -- let clients report their errors and save
                 moveAside <- RuleContent -> ClientOptions -> IO Bool
Save.bkpAllSaves RuleContent
corule ClientOptions
clientOptions
                 when moveAside $
                   T.hPutStrLn stdout
                               "The game crashed, so savefiles are moved aside."
                 hFlush stdout
                 Ex.throwIO ex  -- crash eventually, which kills clients
            )
            exeWithSaves
--  T.hPutStrLn stdout "Server exiting, waiting for clients."
--  hFlush stdout
  waitForChildren childrenServer  -- no crash, wait for clients indefinitely
--  T.hPutStrLn stdout "Server exiting now."
--  hFlush stdout