1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
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 Storage
import Storage.Merge
data DirectMessage = DirectMessage
{ msgFrom :: ComposedIdentity
, msgPrev :: [Stored DirectMessage]
, msgTime :: ZonedTime
, msgText :: Text
}
data DirectMessageThread = DirectMessageThread
{ msgPeer :: ComposedIdentity
, msgHead :: [Stored DirectMessage]
, msgSeen :: [Stored DirectMessage]
}
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"
instance Storable DirectMessageThread where
store' msg = storeRec $ do
mapM_ (storeRef "peer") $ idDataF $ msgPeer msg
mapM_ (storeRef "head") $ msgHead msg
mapM_ (storeRef "seen") $ msgSeen msg
load' = loadRec $ DirectMessageThread
<$> loadIdentity "peer"
<*> loadRefs "head"
<*> loadRefs "seen"
instance Mergeable DirectMessageThread where
mergeSorted ts = DirectMessageThread
{ msgPeer = msgPeer $ fromStored $ head ts -- TODO: merge identity
, msgHead = filterAncestors $ msgHead . fromStored =<< ts
, msgSeen = filterAncestors $ msgSeen . fromStored =<< ts
}
emptyDirectThread :: ComposedIdentity -> DirectMessageThread
emptyDirectThread peer = DirectMessageThread 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 = toComposedIdentity $ 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)
|