module TD.Data.Error
  ( Error(..)    
  , defaultError 
  ) where

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

data Error
  = Error -- ^ An object of this type can be returned on every function call, in case of an error
    { Error -> Maybe Int
code    :: Maybe Int    -- ^ Error code; subject to future changes. If the error code is 406, the error message must not be processed in any way and must not be displayed to the user
    , Error -> Maybe Text
message :: Maybe T.Text -- ^ Error message; subject to future changes
    }
  deriving (Error -> Error -> Bool
(Error -> Error -> Bool) -> (Error -> Error -> Bool) -> Eq Error
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
$c== :: Error -> Error -> Bool
== :: Error -> Error -> Bool
$c/= :: Error -> Error -> Bool
/= :: Error -> Error -> Bool
Eq, Int -> Error -> ShowS
[Error] -> ShowS
Error -> String
(Int -> Error -> ShowS)
-> (Error -> String) -> ([Error] -> ShowS) -> Show Error
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
$cshowsPrec :: Int -> Error -> ShowS
showsPrec :: Int -> Error -> ShowS
$cshow :: Error -> String
show :: Error -> String
$cshowList :: [Error] -> ShowS
showList :: [Error] -> ShowS
Show)

instance I.ShortShow Error where
  shortShow :: Error -> String
shortShow Error
    { code :: Error -> Maybe Int
code    = Maybe Int
code_
    , message :: Error -> Maybe Text
message = Maybe Text
message_
    }
      = String
"Error"
        String -> ShowS
forall a. [a] -> [a] -> [a]
++ [String] -> String
I.cc
        [ String
"code"    String -> Maybe Int -> String
forall a. ShortShow a => String -> Maybe a -> String
`I.p` Maybe Int
code_
        , String
"message" String -> Maybe Text -> String
forall a. ShortShow a => String -> Maybe a -> String
`I.p` Maybe Text
message_
        ]

instance AT.FromJSON Error where
  parseJSON :: Value -> Parser Error
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
"error" -> Value -> Parser Error
parseError Value
v
      String
_       -> Parser Error
forall a. Monoid a => a
mempty
    
    where
      parseError :: A.Value -> AT.Parser Error
      parseError :: Value -> Parser Error
parseError = String -> (Object -> Parser Error) -> Value -> Parser Error
forall a. String -> (Object -> Parser a) -> Value -> Parser a
A.withObject String
"Error" ((Object -> Parser Error) -> Value -> Parser Error)
-> (Object -> Parser Error) -> Value -> Parser Error
forall a b. (a -> b) -> a -> b
$ \Object
o -> do
        Maybe Int
code_    <- Object
o Object -> Key -> Parser (Maybe Int)
forall a. FromJSON a => Object -> Key -> Parser (Maybe a)
A..:?  Key
"code"
        Maybe Text
message_ <- Object
o Object -> Key -> Parser (Maybe Text)
forall a. FromJSON a => Object -> Key -> Parser (Maybe a)
A..:?  Key
"message"
        Error -> Parser Error
forall a. a -> Parser a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (Error -> Parser Error) -> Error -> Parser Error
forall a b. (a -> b) -> a -> b
$ Error
          { code :: Maybe Int
code    = Maybe Int
code_
          , message :: Maybe Text
message = Maybe Text
message_
          }
  parseJSON Value
_ = Parser Error
forall a. Monoid a => a
mempty

instance AT.ToJSON Error where
  toJSON :: Error -> Value
toJSON Error
    { code :: Error -> Maybe Int
code    = Maybe Int
code_
    , message :: Error -> Maybe Text
message = Maybe Text
message_
    }
      = [Pair] -> Value
A.object
        [ Key
"@type"   Key -> Value -> Pair
forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
forall v. ToJSON v => Key -> v -> Pair
A..= Text -> Value
AT.String Text
"error"
        , Key
"code"    Key -> Maybe Int -> Pair
forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
forall v. ToJSON v => Key -> v -> Pair
A..= Maybe Int
code_
        , Key
"message" Key -> Maybe Text -> Pair
forall kv v. (KeyValue kv, ToJSON v) => Key -> v -> kv
forall v. ToJSON v => Key -> v -> Pair
A..= Maybe Text
message_
        ]

defaultError :: Error
defaultError :: Error
defaultError =
  Error
    { code :: Maybe Int
code    = Maybe Int
forall a. Maybe a
Nothing
    , message :: Maybe Text
message = Maybe Text
forall a. Maybe a
Nothing
    }