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|
{-# LANGUAGE OverloadedStrings #-}
module SpaceTraders.APIClient.Client
( APIError(..)
, APIMessage(..)
, defaultReq
, fromJSONValue
, send
, tokenReq
) where
import Control.Exception
import Control.Monad
import Data.Aeson
import Data.Aeson.Types
import qualified Data.Text as T
import qualified Data.Text.Encoding as T
import Network.HTTP.Simple
import Network.HTTP.Types.Status
data APIError = APIError { apiErrorCode :: Int
, apiErrorMessage :: T.Text
} deriving Show
instance Exception APIError
instance FromJSON APIError where
parseJSON (Object o) = do
e <- o .: "error"
APIError <$> e .: "code"
<*> e .: "message"
parseJSON _ = mzero
data APIMessage = APIMessage { data_ :: Value } deriving (Show)
instance FromJSON APIMessage where
parseJSON (Object o) = APIMessage <$> o .: "data"
parseJSON _ = mzero
defaultReq :: Request
defaultReq = setRequestHost "api.spacetraders.io"
$ setRequestPort 443
$ setRequestSecure True
$ setRequestHeader "Content-Type" ["application/json"]
$ defaultRequest
tokenReq :: T.Text -> Request
tokenReq token = setRequestHeader "Authorization" [T.encodeUtf8 $ "Bearer " <> token]
$ defaultReq
fromJSONValue :: FromJSON a => Value -> Either String a
fromJSONValue = parseEither parseJSON
send :: FromJSON a => Request -> IO (Either APIError a)
send request = do
response <- httpLbs request
let status = statusCode $ getResponseStatus response
body = getResponseBody response
if status >= 200 && status <= 299
then case eitherDecode body of
Left e -> return $ Left APIError{apiErrorCode = -1000, apiErrorMessage = T.pack $ concat ["Error decoding JSON APIMessage: ", e]}
Right r -> case fromJSONValue (data_ r) of
Left e -> return $ Left APIError{apiErrorCode = -1001, apiErrorMessage = T.pack $ concat ["Error decoding JSON message contents: ", e]}
Right m -> return $ Right m
else case eitherDecode body of
Left e -> return $ Left APIError{apiErrorCode = -status, apiErrorMessage = T.pack $ concat ["Error decoding JSON APIError: ", e, ". Got HTTP body: ", show body]}
Right e -> return $ Left e
--handleAPIError :: SomeException -> IO (Maybe RegisterMessage)
--handleAPIError e = do
-- print e
-- return Nothing
|
