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module Message (
DirectMessage(..), DirectMessageThread(..),
emptyDirectThread, createDirectMessage,
threadToList,
) where
import Data.List
import Data.Ord
import qualified Data.Set as S
import Data.Text (Text)
import Data.Time.LocalTime
import Identity
import PubKey
import Storage
data DirectMessage = DirectMessage
{ msgFrom :: Stored (Signed IdentityData)
, msgPrev :: [Stored DirectMessage]
, msgTime :: ZonedTime
, msgText :: Text
}
data DirectMessageThread = DirectMessageThread
{ msgPeer :: Stored (Signed IdentityData)
, msgHead :: [Stored DirectMessage]
, msgSeen :: [Stored DirectMessage]
}
instance Storable DirectMessage where
store' msg = storeRec $ do
storeRef "from" $ msgFrom msg
mapM_ (storeRef "prev") $ msgPrev msg
storeDate "time" $ msgTime msg
storeText "text" $ msgText msg
load' = loadRec $ DirectMessage
<$> loadRef "from"
<*> loadRefs "prev"
<*> loadDate "time"
<*> loadText "text"
instance Storable DirectMessageThread where
store' msg = storeRec $ do
storeRef "peer" $ msgPeer msg
mapM_ (storeRef "head") $ msgHead msg
mapM_ (storeRef "seen") $ msgSeen msg
load' = loadRec $ DirectMessageThread
<$> loadRef "peer"
<*> loadRefs "head"
<*> loadRefs "seen"
emptyDirectThread :: UnifiedIdentity -> DirectMessageThread
emptyDirectThread peer = DirectMessageThread (idData peer) [] []
createDirectMessage :: UnifiedIdentity -> DirectMessageThread -> Text -> IO (Stored DirectMessage, Stored DirectMessageThread)
createDirectMessage self thread msg = do
let st = storedStorage $ idData self
time <- getZonedTime
smsg <- wrappedStore st DirectMessage
{ msgFrom = idData $ finalOwner self
, msgPrev = msgHead thread
, msgTime = time
, msgText = msg
}
sthread <- wrappedStore st thread
{ msgHead = [smsg]
, msgSeen = [smsg]
}
return (smsg, sthread)
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)
|