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module Contact (
Contact(..),
contactView,
ContactService,
contactRequest,
contactAccept,
) where
import Control.Arrow
import Control.Monad
import Control.Monad.Except
import Control.Monad.Reader
import Data.Maybe
import Data.Proxy
import Data.Text (Text)
import qualified Data.Text as T
import Identity
import Network
import Pairing
import PubKey
import Service
import State
import Storage
import Storage.Merge
data Contact = Contact
{ contactIdentity :: ComposedIdentity
, contactName :: Maybe Text
}
data ContactData = ContactData
{ cdPrev :: [Stored ContactData]
, cdIdentity :: [Stored (Signed IdentityData)]
, cdName :: Maybe Text
}
instance Storable ContactData where
store' x = storeRec $ do
mapM_ (storeRef "PREV") $ cdPrev x
mapM_ (storeRef "identity") $ cdIdentity x
storeMbText "name" $ cdName x
load' = loadRec $ ContactData
<$> loadRefs "PREV"
<*> loadRefs "identity"
<*> loadMbText "name"
instance SharedType ContactData where
sharedTypeID _ = mkSharedTypeID "34fbb61e-6022-405f-b1b3-a5a1abecd25e"
contactView :: [Stored ContactData] -> [Contact]
contactView = helper []
where helper used = filterAncestors >>> \case
x:xs | Just cid <- validateIdentityF (cdIdentity (fromStored x))
, not $ any (sameIdentity cid) used
-> Contact { contactIdentity = cid
, contactName = lookupProperty cid cdName (x:xs)
} : helper (cid:used) (cdPrev (fromStored x) ++ xs)
| otherwise -> helper used (cdPrev (fromStored x) ++ xs)
[] -> []
lookupProperty :: forall a. ComposedIdentity -> (ContactData -> Maybe a) -> [Stored ContactData] -> Maybe a
lookupProperty idt sel = join . fmap (sel . fromStored) . listToMaybe . filterAncestors . helper
where helper (x:xs) | Just cid <- validateIdentityF (cdIdentity (fromStored x))
, cid `sameIdentity` idt
, Just _ <- sel $ fromStored x
= x : helper xs
| otherwise = helper $ cdPrev (fromStored x) ++ xs
helper [] = []
type ContactService = PairingService ContactAccepted
data ContactAccepted = ContactAccepted
instance Storable ContactAccepted where
store' ContactAccepted = storeRec $ do
storeText "accept" ""
load' = loadRec $ do
(_ :: T.Text) <- loadText "accept"
return ContactAccepted
instance PairingResult ContactAccepted where
pairingServiceID _ = mkServiceID "d9c37368-0da1-4280-93e9-d9bd9a198084"
defaultPairingAttributes _ = PairingAttributes
{ pairingHookRequest = do
peer <- asks $ svcPeerIdentity
svcPrint $ "Contact pairing from " ++ T.unpack (displayIdentity peer) ++ " initiated"
, pairingHookResponse = \confirm -> do
peer <- asks $ svcPeerIdentity
svcPrint $ "Confirm contact " ++ T.unpack (displayIdentity $ finalOwner peer) ++ ": " ++ confirm
, pairingHookRequestNonce = \confirm -> do
peer <- asks $ svcPeerIdentity
svcPrint $ "Contact request from " ++ T.unpack (displayIdentity $ finalOwner peer) ++ ": " ++ confirm
, pairingHookRequestNonceFailed = do
peer <- asks $ svcPeerIdentity
svcPrint $ "Failed contact request from " ++ T.unpack (displayIdentity peer)
, pairingHookConfirm = \ContactAccepted -> do
svcPrint $ "Contact confirmed by peer"
return $ Just ContactAccepted
, pairingHookAccept = \ContactAccepted -> return ()
}
contactRequest :: (MonadIO m, MonadError String m) => (String -> IO ()) -> Peer -> m ()
contactRequest _ = pairingRequest @ContactAccepted Proxy
contactAccept :: (MonadIO m, MonadError String m) => (String -> IO ()) -> Head LocalState -> Peer -> m ()
contactAccept printMsg h peer = do
sendToPeerWith peer $ \case
NoPairing -> throwError $ "none in progress"
OurRequest {} -> throwError $ "waiting for peer"
OurRequestConfirm Nothing -> do
liftIO $ printMsg $ "Contact accepted, waiting for peer confirmation"
return (Nothing, OurRequestReady)
OurRequestConfirm (Just ContactAccepted) -> do
PeerIdentityFull pid <- peerIdentity peer
liftIO $ printMsg $ "Contact accepted"
flip runReaderT h $ updateLocalState_ $ finalizeContact pid
return (Nothing, PairingDone)
OurRequestReady -> throwError $ "alredy accepted, waiting for peer"
PeerRequest {} -> throwError $ "waiting for peer"
PeerRequestConfirm -> do
PeerIdentityFull pid <- peerIdentity peer
liftIO $ printMsg $ "Contact accepted"
flip runReaderT h $ updateLocalState_ $ finalizeContact pid
return (Just $ PairingAccept ContactAccepted, PairingDone)
PairingDone -> throwError $ "alredy done"
PairingFailed -> throwError $ "alredy failed"
finalizeContact :: MonadIO m => UnifiedIdentity -> Stored LocalState -> m (Stored LocalState)
finalizeContact identity slocal = liftIO $ do
let st = storedStorage slocal
contact <- wrappedStore st ContactData
{ cdPrev = lookupSharedValue $ lsShared $ fromStored slocal
, cdIdentity = idDataF $ finalOwner identity
, cdName = Nothing
}
shared <- makeSharedStateUpdate st [contact] (lsShared $ fromStored slocal)
wrappedStore st (fromStored slocal) { lsShared = [shared] }
|