-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | A library simplifying user management for web applications
--   
@package users
@version 0.2.0.1

module Web.Users.Types

-- | An abstract backend for managing users. A backend library should
--   implement the interface and an end user should build applications on
--   top of this interface.
class (Show (UserId b), Eq (UserId b), ToJSON (UserId b), FromJSON (UserId b), Typeable (UserId b), PathPiece (UserId b)) => UserStorageBackend b where type family UserId b :: * updateUserDetails backend userId f = do { _ <- updateUser backend userId $ \ user -> user {u_more = f (u_more user)}; return () }
initUserBackend :: UserStorageBackend b => b -> IO ()
destroyUserBackend :: UserStorageBackend b => b -> IO ()
housekeepBackend :: UserStorageBackend b => b -> IO ()
getUserById :: (UserStorageBackend b, FromJSON a, ToJSON a) => b -> UserId b -> IO (Maybe (User a))
listUsers :: (UserStorageBackend b, FromJSON a, ToJSON a) => b -> Maybe (Int64, Int64) -> IO [(UserId b, User a)]
countUsers :: UserStorageBackend b => b -> IO Int64
createUser :: (UserStorageBackend b, FromJSON a, ToJSON a) => b -> User a -> IO (Either CreateUserError (UserId b))
updateUser :: (UserStorageBackend b, FromJSON a, ToJSON a) => b -> UserId b -> (User a -> User a) -> IO (Either UpdateUserError ())
updateUserDetails :: (UserStorageBackend b, FromJSON a, ToJSON a) => b -> UserId b -> (a -> a) -> IO ()
deleteUser :: UserStorageBackend b => b -> UserId b -> IO ()
authUser :: UserStorageBackend b => b -> Text -> PasswordPlain -> NominalDiffTime -> IO (Maybe SessionId)
verifySession :: UserStorageBackend b => b -> SessionId -> NominalDiffTime -> IO (Maybe (UserId b))
destroySession :: UserStorageBackend b => b -> SessionId -> IO ()
requestPasswordReset :: UserStorageBackend b => b -> UserId b -> NominalDiffTime -> IO PasswordResetToken
verifyPasswordResetToken :: (UserStorageBackend b, FromJSON a, ToJSON a) => b -> PasswordResetToken -> IO (Maybe (User a))
applyNewPassword :: UserStorageBackend b => b -> PasswordResetToken -> Password -> IO (Either TokenError ())
requestActivationToken :: UserStorageBackend b => b -> UserId b -> NominalDiffTime -> IO ActivationToken
activateUser :: UserStorageBackend b => b -> ActivationToken -> IO (Either TokenError ())

-- | Core user datatype. Store custom information in the <a>u_more</a>
--   field
data User a
User :: !Text -> !Text -> !Password -> !Bool -> !a -> User a
u_name :: User a -> !Text
u_email :: User a -> !Text
u_password :: User a -> !Password
u_active :: User a -> !Bool
u_more :: User a -> !a

-- | Password representation. When updating or creating a user, use
--   <a>makePassword</a> to create one. The implementation details of this
--   type are ONLY for use in backend implementations.
data Password
PasswordHash :: !Text -> Password
PasswordHidden :: Password

-- | Construct a password from plaintext by hashing it
makePassword :: PasswordPlain -> Password

-- | Strip the password from the user type.
hidePassword :: User a -> User a

-- | Plaintext passsword. Used for authentification.
newtype PasswordPlain
PasswordPlain :: Text -> PasswordPlain
unPasswordPlain :: PasswordPlain -> Text

-- | Check a plaintext password against a password
verifyPassword :: PasswordPlain -> Password -> Bool

-- | A password reset token to send out to users via email or sms
newtype PasswordResetToken
PasswordResetToken :: Text -> PasswordResetToken
unPasswordResetToken :: PasswordResetToken -> Text

-- | An activation token to send out to users via email or sms
newtype ActivationToken
ActivationToken :: Text -> ActivationToken
unActivationToken :: ActivationToken -> Text

-- | A session id for identifying user sessions
newtype SessionId
SessionId :: Text -> SessionId
unSessionId :: SessionId -> Text

-- | Errors that happen on storage level during user creation
data CreateUserError
UsernameOrEmailAlreadyTaken :: CreateUserError
InvalidPassword :: CreateUserError

-- | Errors that happen on storage level during user updating
data UpdateUserError
UsernameOrEmailAlreadyExists :: UpdateUserError
UserDoesntExit :: UpdateUserError

-- | Errors that happen on storage level during token actions
data TokenError
TokenInvalid :: TokenError
instance Typeable PasswordResetToken
instance Typeable ActivationToken
instance Typeable SessionId
instance Typeable PasswordPlain
instance Typeable Password
instance Typeable User
instance Show CreateUserError
instance Eq CreateUserError
instance Show UpdateUserError
instance Eq UpdateUserError
instance Show TokenError
instance Eq TokenError
instance Show PasswordResetToken
instance Eq PasswordResetToken
instance ToJSON PasswordResetToken
instance FromJSON PasswordResetToken
instance PathPiece PasswordResetToken
instance Show ActivationToken
instance Eq ActivationToken
instance ToJSON ActivationToken
instance FromJSON ActivationToken
instance PathPiece ActivationToken
instance Show SessionId
instance Eq SessionId
instance ToJSON SessionId
instance FromJSON SessionId
instance PathPiece SessionId
instance Show PasswordPlain
instance Eq PasswordPlain
instance IsString PasswordPlain
instance Show Password
instance Eq Password
instance Show a => Show (User a)
instance Eq a => Eq (User a)
instance FromJSON a => FromJSON (User a)
instance ToJSON a => ToJSON (User a)