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{-# LANGUAGE OverloadedStrings #-}
module Birthdate
( Birthdate(..)
, fullname
, age
, filterBirthday
) where
import Data.Text (Text)
import qualified Data.Text as T
import Date (Date, sameDayAndMonth, yearsGap)
data Birthdate = Birthdate
{ date :: Date
, firstname :: Text
, lastname :: Text
} deriving (Eq, Show)
fullname :: Birthdate -> Text
fullname d = T.concat [firstname d, " ", lastname d]
age :: Date -> Birthdate -> Int
age currentDate birthdate = yearsGap currentDate (date birthdate)
filterBirthday :: Date -> [Birthdate] -> [Birthdate]
filterBirthday d = filter (sameDayAndMonth d . date)
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