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-rw-r--r--server/src/Util/Time.hs25
1 files changed, 25 insertions, 0 deletions
diff --git a/server/src/Util/Time.hs b/server/src/Util/Time.hs
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+++ b/server/src/Util/Time.hs
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+module Util.Time
+ ( belongToCurrentMonth
+ , belongToCurrentWeek
+ , timeToDay
+ ) where
+
+import Data.Time.Calendar
+import Data.Time.Calendar.WeekDate (toWeekDate)
+import Data.Time.Clock (UTCTime, getCurrentTime)
+import Data.Time.LocalTime
+
+belongToCurrentMonth :: UTCTime -> IO Bool
+belongToCurrentMonth time = do
+ (timeYear, timeMonth, _) <- toGregorian <$> timeToDay time
+ (actualYear, actualMonth, _) <- toGregorian <$> (getCurrentTime >>= timeToDay)
+ return (actualYear == timeYear && actualMonth == timeMonth)
+
+belongToCurrentWeek :: UTCTime -> IO Bool
+belongToCurrentWeek time = do
+ (timeYear, timeWeek, _) <- toWeekDate <$> timeToDay time
+ (actualYear, actualWeek, _) <- toWeekDate <$> (getCurrentTime >>= timeToDay)
+ return (actualYear == timeYear && actualWeek == timeWeek)
+
+timeToDay :: UTCTime -> IO Day
+timeToDay time = localDay . (flip utcToLocalTime time) <$> getTimeZone time