{-# LANGUAGE DeriveDataTypeable, GeneralizedNewtypeDeriving, TemplateHaskell #-}
module Distribution.Server.Users.Types (
    module Distribution.Server.Users.Types,
    module Distribution.Server.Framework.AuthTypes
  ) where

import Distribution.Server.Framework.AuthTypes
import Distribution.Server.Framework.MemSize

import Distribution.Text
         ( Text(..) )
import qualified Distribution.Server.Util.Parse as Parse
import qualified Distribution.Compat.ReadP as Parse
import qualified Text.PrettyPrint          as Disp
import qualified Data.Char as Char

import Data.Serialize (Serialize)
import Control.Applicative ((<$>))

import Data.SafeCopy (base, deriveSafeCopy)
import Data.Typeable (Typeable)

newtype UserId = UserId Int
  deriving (Eq, Ord, Show, Serialize, Typeable, MemSize)

newtype UserName  = UserName String
  deriving (Eq, Ord, Show, Serialize, Typeable, MemSize)

data UserInfo = UserInfo {
                  userName   :: !UserName,
                  userStatus :: !UserStatus
                } deriving (Eq, Show, Typeable)

data UserStatus = AccountEnabled  UserAuth
                | AccountDisabled (Maybe UserAuth)
                | AccountDeleted
    deriving (Eq, Show, Typeable)

newtype UserAuth = UserAuth PasswdHash
    deriving (Show, Eq, Typeable)

isActiveAccount :: UserStatus -> Bool
isActiveAccount (AccountEnabled  _) = True
isActiveAccount (AccountDisabled _) = True
isActiveAccount  AccountDeleted     = False

instance MemSize UserInfo where
    memSize (UserInfo a b) = memSize2 a b

instance MemSize UserStatus where
    memSize (AccountEnabled  a) = memSize1 a
    memSize (AccountDisabled a) = memSize1 a
    memSize (AccountDeleted)    = memSize0

instance MemSize UserAuth where
    memSize (UserAuth a) = memSize1 a


instance Text UserId where
    disp (UserId uid) = Disp.int uid
    parse = UserId <$> Parse.int

instance Text UserName where
    disp (UserName name) = Disp.text name
    parse = UserName <$> Parse.munch1 Char.isAlphaNum


$(deriveSafeCopy 0 'base ''UserId)
$(deriveSafeCopy 0 'base ''UserName)
$(deriveSafeCopy 1 'base ''UserAuth)
$(deriveSafeCopy 0 'base ''UserStatus)
$(deriveSafeCopy 0 'base ''UserInfo)