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|
module Message (
DirectMessage(..),
sendDirectMessage,
DirectMessageAttributes(..),
defaultDirectMessageAttributes,
DirectMessageThreads,
toThreadList,
DirectMessageThread(..),
threadToList,
messageThreadView,
formatMessage,
) where
import Control.Monad.Except
import Control.Monad.Reader
import Data.List
import Data.Ord
import qualified Data.Set as S
import Data.Text (Text)
import qualified Data.Text as T
import Data.Time.Format
import Data.Time.LocalTime
import Identity
import Network
import Service
import State
import Storage
import Storage.Merge
data DirectMessage = DirectMessage
{ msgFrom :: ComposedIdentity
, msgPrev :: [Stored DirectMessage]
, msgTime :: ZonedTime
, msgText :: Text
}
instance Storable DirectMessage where
store' msg = storeRec $ do
mapM_ (storeRef "from") $ idDataF $ msgFrom msg
mapM_ (storeRef "PREV") $ msgPrev msg
storeDate "time" $ msgTime msg
storeText "text" $ msgText msg
load' = loadRec $ DirectMessage
<$> loadIdentity "from"
<*> loadRefs "PREV"
<*> loadDate "time"
<*> loadText "text"
data DirectMessageAttributes = DirectMessageAttributes
{ dmReceived :: Stored DirectMessage -> ServiceHandler DirectMessage ()
, dmOwnerMismatch :: ServiceHandler DirectMessage ()
}
defaultDirectMessageAttributes :: DirectMessageAttributes
defaultDirectMessageAttributes = DirectMessageAttributes
{ dmReceived = \msg -> do
tzone <- liftIO $ getCurrentTimeZone
svcPrint $ formatMessage tzone $ fromStored msg
, dmOwnerMismatch = svcPrint "Owner mismatch"
}
instance Service DirectMessage where
serviceID _ = mkServiceID "c702076c-4928-4415-8b6b-3e839eafcb0d"
type ServiceAttributes DirectMessage = DirectMessageAttributes
defaultServiceAttributes _ = defaultDirectMessageAttributes
serviceHandler smsg = do
let msg = fromStored smsg
powner <- asks $ finalOwner . svcPeerIdentity
erb <- svcGetLocal
let st = storedStorage erb
DirectMessageThreads prev _ = lookupSharedValue $ lsShared $ fromStored erb
sent = findMsgProperty powner msSent prev
received = findMsgProperty powner msReceived prev
if powner `sameIdentity` msgFrom msg ||
filterAncestors sent == filterAncestors (smsg : sent)
then do
erb' <- liftIO $ do
next <- wrappedStore st $ MessageState
{ msPrev = prev
, msPeer = powner
, msSent = []
, msReceived = filterAncestors $ smsg : received
, msSeen = []
}
let threads = DirectMessageThreads [next] (messageThreadView [next])
shared <- makeSharedStateUpdate st threads (lsShared $ fromStored erb)
wrappedStore st (fromStored erb) { lsShared = [shared] }
svcSetLocal erb'
when (powner `sameIdentity` msgFrom msg) $ do
hook <- asks $ dmReceived . svcAttributes
hook smsg
replyStoredRef smsg
else join $ asks $ dmOwnerMismatch . svcAttributes
data MessageState = MessageState
{ msPrev :: [Stored MessageState]
, msPeer :: ComposedIdentity
, msSent :: [Stored DirectMessage]
, msReceived :: [Stored DirectMessage]
, msSeen :: [Stored DirectMessage]
}
data DirectMessageThreads = DirectMessageThreads [Stored MessageState] [DirectMessageThread]
toThreadList :: DirectMessageThreads -> [DirectMessageThread]
toThreadList (DirectMessageThreads _ threads) = threads
instance Storable MessageState where
store' ms = storeRec $ do
mapM_ (storeRef "PREV") $ msPrev ms
mapM_ (storeRef "peer") $ idDataF $ msPeer ms
mapM_ (storeRef "sent") $ msSent ms
mapM_ (storeRef "received") $ msReceived ms
mapM_ (storeRef "seen") $ msSeen ms
load' = loadRec $ MessageState
<$> loadRefs "PREV"
<*> loadIdentity "peer"
<*> loadRefs "sent"
<*> loadRefs "received"
<*> loadRefs "seen"
instance Mergeable DirectMessageThreads where
type Component DirectMessageThreads = MessageState
mergeSorted mss = DirectMessageThreads mss (messageThreadView mss)
toComponents (DirectMessageThreads mss _) = mss
instance SharedType DirectMessageThreads where
sharedTypeID _ = mkSharedTypeID "ee793681-5976-466a-b0f0-4e1907d3fade"
findMsgProperty :: Foldable m => Identity m -> (MessageState -> [a]) -> [Stored MessageState] -> [a]
findMsgProperty pid sel mss = concat $ flip findProperty mss $ \x -> do
guard $ msPeer x `sameIdentity` pid
guard $ not $ null $ sel x
return $ sel x
sendDirectMessage :: (MonadIO m, MonadError String m) => Head LocalState -> Peer -> Text -> m (Stored DirectMessage)
sendDirectMessage h peer text = do
pid <- peerIdentity peer >>= \case PeerIdentityFull pid -> return pid
_ -> throwError "incomplete peer identity"
let st = refStorage $ headRef h
self = headLocalIdentity h
powner = finalOwner pid
smsg <- flip runReaderT h $ updateLocalHead $ updateSharedState $ \(DirectMessageThreads prev _) -> liftIO $ do
let sent = findMsgProperty powner msSent prev
received = findMsgProperty powner msReceived prev
time <- getZonedTime
smsg <- wrappedStore st DirectMessage
{ msgFrom = toComposedIdentity $ finalOwner self
, msgPrev = filterAncestors $ sent ++ received
, msgTime = time
, msgText = text
}
next <- wrappedStore st $ MessageState
{ msPrev = prev
, msPeer = powner
, msSent = [smsg]
, msReceived = []
, msSeen = []
}
return (DirectMessageThreads [next] (messageThreadView [next]), smsg)
sendToPeerStored peer smsg
return smsg
data DirectMessageThread = DirectMessageThread
{ msgPeer :: ComposedIdentity
, msgHead :: [Stored DirectMessage]
, msgSeen :: [Stored DirectMessage]
}
threadToList :: DirectMessageThread -> [DirectMessage]
threadToList thread = helper S.empty $ msgHead thread
where helper seen msgs
| msg : msgs' <- filter (`S.notMember` seen) $ reverse $ sortBy (comparing cmpView) msgs =
fromStored msg : helper (S.insert msg seen) (msgs' ++ msgPrev (fromStored msg))
| otherwise = []
cmpView msg = (zonedTimeToUTC $ msgTime $ fromStored msg, msg)
messageThreadView :: [Stored MessageState] -> [DirectMessageThread]
messageThreadView = helper []
where helper used ms' = case filterAncestors ms' of
mss@(sms : rest)
| any (sameIdentity $ msPeer $ fromStored sms) used ->
helper used $ msPrev (fromStored sms) ++ rest
| otherwise ->
let peer = msPeer $ fromStored sms
sent = findMsgProperty peer msSent mss
received = findMsgProperty peer msReceived mss
seen = findMsgProperty peer msSeen mss
in DirectMessageThread
{ msgPeer = peer
, msgHead = filterAncestors $ sent ++ received
, msgSeen = filterAncestors $ sent ++ seen
} : helper (peer : used) (msPrev (fromStored sms) ++ rest)
_ -> []
formatMessage :: TimeZone -> DirectMessage -> String
formatMessage tzone msg = concat
[ formatTime defaultTimeLocale "[%H:%M] " $ utcToLocalTime tzone $ zonedTimeToUTC $ msgTime msg
, maybe "<unnamed>" T.unpack $ idName $ msgFrom msg
, ": "
, T.unpack $ msgText msg
]
|