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module HTTP
  ( getPage
  ) where

import Control.Exception (SomeException, try)
import Control.Arrow (left)
import Control.Applicative ((<$>))

import Data.Text (Text)
import qualified Data.Text as T
import qualified Data.Text.IO as T

import Network.HTTP (simpleHTTP, getRequest, getResponseBody)
import Network.HTTP.Headers (insertHeader, HeaderName(HdrAcceptLanguage))

import Model.URL

import Codec.Binary.UTF8.String (decodeString)

getPage :: URL -> IO (Either Text Text)
getPage url =
  left (T.pack . show) <$> (try (unsafeGetPage url) :: IO (Either SomeException Text))

unsafeGetPage :: URL -> IO Text
unsafeGetPage url = simpleHTTP (insertHeader HdrAcceptLanguage "en" $ getRequest (T.unpack url)) >>= (\x -> T.pack . decodeString <$> getResponseBody x)