module Data.SMTP.Types.Mime where

import Data.Default.Class

mimeVersionHeaderName :: String
mimeVersionHeaderName = "Mime-Version"

data ContentTypeHeader = ContentTypeHeader ContentType ContentTypeParameters deriving (Read, Show, Eq, Ord)

data ContentType = MultiPartMime MultiPartType | MessageMime MessageType |
                   ContentMime String deriving (Read, Show, Eq, Ord)
data MultiPartType = FcmtpDigest | OtherMultiPartType String deriving (Read, Show, Eq, Ord)
data MessageType = FcmtpResource | OtherMessageType String deriving (Read, Show, Eq, Ord)

data ContentTypeParameters = ContentTypeParameters {
  boundary :: Maybe String, charset :: Maybe String, other :: [(String, String)]
  } deriving (Read, Show, Eq, Ord)

instance Default ContentType where
  def = ContentMime "text/plain"

instance Default ContentTypeParameters where
  def = ContentTypeParameters Nothing Nothing []

instance Default ContentTypeHeader where
  def = ContentTypeHeader def def{charset=Just "us-ascii"}

contentTypeHeaderName :: String
contentTypeHeaderName = "Content-Type"

data BodyEncoding = B7BitEncoding | B8BitEncoding | BBinaryEncoding deriving (Eq, Ord, Bounded, Enum)

data TransferEncoding = IdentityEncoding BodyEncoding | QPEncodedBody | Base64EncodedBody deriving (Eq, Ord)

instance Default TransferEncoding where
  def = IdentityEncoding B7BitEncoding

instance Show BodyEncoding where
  show B7BitEncoding = "7BIT"
  show B8BitEncoding = "8BITMIME"
  show BBinaryEncoding = "BINARYMIME"
instance Show TransferEncoding where
  show (IdentityEncoding b) = case b of
    B7BitEncoding -> "7bit"
    B8BitEncoding -> "8bit"
    BBinaryEncoding -> "binary"
  show QPEncodedBody = "quoted-printable"
  show Base64EncodedBody = "base64"

transferEncodingHeaderName :: String
transferEncodingHeaderName = "Content-Transfer-Encoding"

transferToBody :: TransferEncoding -> BodyEncoding
transferToBody (IdentityEncoding e) = e
transferToBody _ = B7BitEncoding