From 27e11b20b06f2f2dbfb56c0998a63169b4b8abc4 Mon Sep 17 00:00:00 2001
From: Joris
Date: Wed, 8 Nov 2017 23:47:26 +0100
Subject: Use a better project structure

---
 server/src/Utils/Time.hs | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 server/src/Utils/Time.hs

(limited to 'server/src/Utils/Time.hs')

diff --git a/server/src/Utils/Time.hs b/server/src/Utils/Time.hs
new file mode 100644
index 0000000..97457c7
--- /dev/null
+++ b/server/src/Utils/Time.hs
@@ -0,0 +1,25 @@
+module Utils.Time
+  ( belongToCurrentMonth
+  , belongToCurrentWeek
+  , timeToDay
+  ) where
+
+import Data.Time.Clock (UTCTime, getCurrentTime)
+import Data.Time.LocalTime
+import Data.Time.Calendar
+import Data.Time.Calendar.WeekDate (toWeekDate)
+
+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
-- 
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