module TD.Data.DateRange
  (DateRange(..)) where

import qualified Data.Aeson as A
import qualified Data.Aeson.Types as AT
import qualified TD.Lib.Internal as I

data DateRange
  = DateRange -- ^ Represents a date range
    { DateRange -> Maybe Int
start_date :: Maybe Int -- ^ Point in time (Unix timestamp) at which the date range begins
    , DateRange -> Maybe Int
end_date   :: Maybe Int -- ^ Point in time (Unix timestamp) at which the date range ends
    }
  deriving (DateRange -> DateRange -> Bool
(DateRange -> DateRange -> Bool)
-> (DateRange -> DateRange -> Bool) -> Eq DateRange
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
$c== :: DateRange -> DateRange -> Bool
== :: DateRange -> DateRange -> Bool
$c/= :: DateRange -> DateRange -> Bool
/= :: DateRange -> DateRange -> Bool
Eq, Int -> DateRange -> ShowS
[DateRange] -> ShowS
DateRange -> String
(Int -> DateRange -> ShowS)
-> (DateRange -> String)
-> ([DateRange] -> ShowS)
-> Show DateRange
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
$cshowsPrec :: Int -> DateRange -> ShowS
showsPrec :: Int -> DateRange -> ShowS
$cshow :: DateRange -> String
show :: DateRange -> String
$cshowList :: [DateRange] -> ShowS
showList :: [DateRange] -> ShowS
Show)

instance I.ShortShow DateRange where
  shortShow :: DateRange -> String
shortShow DateRange
    { start_date :: DateRange -> Maybe Int
start_date = Maybe Int
start_date_
    , end_date :: DateRange -> Maybe Int
end_date   = Maybe Int
end_date_
    }
      = String
"DateRange"
        String -> ShowS
forall a. [a] -> [a] -> [a]
++ [String] -> String
I.cc
        [ String
"start_date" String -> Maybe Int -> String
forall a. ShortShow a => String -> Maybe a -> String
`I.p` Maybe Int
start_date_
        , String
"end_date"   String -> Maybe Int -> String
forall a. ShortShow a => String -> Maybe a -> String
`I.p` Maybe Int
end_date_
        ]

instance AT.FromJSON DateRange where
  parseJSON :: Value -> Parser DateRange
parseJSON v :: Value
v@(AT.Object Object
obj) = do
    String
t <- Object
obj Object -> Key -> Parser String
forall a. FromJSON a => Object -> Key -> Parser a
A..: Key
"@type" :: AT.Parser String

    case String
t of
      String
"dateRange" -> Value -> Parser DateRange
parseDateRange Value
v
      String
_           -> Parser DateRange
forall a. Monoid a => a
mempty
    
    where
      parseDateRange :: A.Value -> AT.Parser DateRange
      parseDateRange :: Value -> Parser DateRange
parseDateRange = String -> (Object -> Parser DateRange) -> Value -> Parser DateRange
forall a. String -> (Object -> Parser a) -> Value -> Parser a
A.withObject String
"DateRange" ((Object -> Parser DateRange) -> Value -> Parser DateRange)
-> (Object -> Parser DateRange) -> Value -> Parser DateRange
forall a b. (a -> b) -> a -> b
$ \Object
o -> do
        Maybe Int
start_date_ <- Object
o Object -> Key -> Parser (Maybe Int)
forall a. FromJSON a => Object -> Key -> Parser (Maybe a)
A..:?  Key
"start_date"
        Maybe Int
end_date_   <- Object
o Object -> Key -> Parser (Maybe Int)
forall a. FromJSON a => Object -> Key -> Parser (Maybe a)
A..:?  Key
"end_date"
        DateRange -> Parser DateRange
forall a. a -> Parser a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (DateRange -> Parser DateRange) -> DateRange -> Parser DateRange
forall a b. (a -> b) -> a -> b
$ DateRange
          { start_date :: Maybe Int
start_date = Maybe Int
start_date_
          , end_date :: Maybe Int
end_date   = Maybe Int
end_date_
          }
  parseJSON Value
_ = Parser DateRange
forall a. Monoid a => a
mempty