aboutsummaryrefslogtreecommitdiff
path: root/server/src/Resource.hs
diff options
context:
space:
mode:
Diffstat (limited to 'server/src/Resource.hs')
-rw-r--r--server/src/Resource.hs54
1 files changed, 0 insertions, 54 deletions
diff --git a/server/src/Resource.hs b/server/src/Resource.hs
deleted file mode 100644
index a12a0f2..0000000
--- a/server/src/Resource.hs
+++ /dev/null
@@ -1,54 +0,0 @@
-module Resource
- ( Resource
- , resourceCreatedAt
- , resourceEditedAt
- , resourceDeletedAt
- , Status(..)
- , statuses
- , groupByStatus
- , statusDuring
- ) where
-
-import Data.Map (Map)
-import qualified Data.Map as M
-import Data.Maybe (fromMaybe)
-import Data.Time.Clock (UTCTime)
-
-class Resource a where
- resourceCreatedAt :: a -> UTCTime
- resourceEditedAt :: a -> Maybe UTCTime
- resourceDeletedAt :: a -> Maybe UTCTime
-
-data Status =
- Created
- | Edited
- | Deleted
- deriving (Eq, Show, Read, Ord, Enum, Bounded)
-
-statuses :: [Status]
-statuses = [minBound..]
-
-groupByStatus :: Resource a => UTCTime -> UTCTime -> [a] -> Map Status [a]
-groupByStatus start end resources =
- foldl
- (\m resource ->
- case statusDuring start end resource of
- Just status -> M.insertWith (++) status [resource] m
- Nothing -> m
- )
- M.empty
- resources
-
-statusDuring :: Resource a => UTCTime -> UTCTime -> a -> Maybe Status
-statusDuring start end resource
- | created && not deleted = Just Created
- | not created && edited && not deleted = Just Edited
- | not created && deleted = Just Deleted
- | otherwise = Nothing
- where
- created = belongs (resourceCreatedAt resource) start end
- edited = fromMaybe False (fmap (\t -> belongs t start end) $ resourceEditedAt resource)
- deleted = fromMaybe False (fmap (\t -> belongs t start end) $ resourceDeletedAt resource)
-
-belongs :: UTCTime -> UTCTime -> UTCTime -> Bool
-belongs time start end = time >= start && time < end