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{-# LANGUAGE OverloadedStrings #-}
module SendMail
( sendMail
) where
import Control.Arrow (left)
import Control.Exception (SomeException, try)
import Data.Either (isLeft)
import Data.Text (Text)
import Data.Text.Lazy.Builder (toLazyText, fromText)
import qualified Data.Text as T
import qualified Data.Text.Lazy as LT
import qualified MimeMail as M
import Model.Mail (Mail(Mail))
sendMail :: Mail -> IO (Either Text ())
sendMail mail = do
result <- left (T.pack . show) <$> (try (M.renderSendMail . getMimeMail $ mail) :: IO (Either SomeException ()))
if isLeft result
then putStrLn ("Error sending the following email:" ++ (show mail) ++ "\n" ++ (show result))
else putStrLn "OK"
return result
getMimeMail :: Mail -> M.Mail
getMimeMail (Mail mailFrom mailTo mailSubject mailPlainBody) =
let fromMail = M.emptyMail (address mailFrom)
in fromMail
{ M.mailTo = map address mailTo
, M.mailParts = [ [ M.plainPart . strictToLazy $ mailPlainBody ] ]
, M.mailHeaders = [("Subject", mailSubject)]
}
address :: Text -> M.Address
address addressEmail =
M.Address
{ M.addressName = Nothing
, M.addressEmail = addressEmail
}
strictToLazy :: Text -> LT.Text
strictToLazy = toLazyText . fromText
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