{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE OverloadedStrings #-}
-- |
-- Module      : SMSAero.Types
-- Copyright   : (c) 2016, GetShopTV
-- License     : BSD3
-- Maintainer  : nickolay@getshoptv.com
-- Stability   : experimental
--
-- This module defines types used in SMSAero API.
module SMSAero.Types (
  SMSAeroAuth(..),
  Signature(..),
  MessageId(..),
  MessageBody(..),
  Group(..),
  Phone(..),
  SMSAeroDate(..),
  SendType(..),
  DigitalChannel(..),
  Name(..),
  BirthDate(..),
  ChannelName,
) where

import Control.Applicative (empty)

import Data.Aeson
import Data.Int (Int64)

import Data.Time (UTCTime)
import Data.Time.Calendar (Day)
import Data.Time.Clock.POSIX (utcTimeToPOSIXSeconds, posixSecondsToUTCTime)

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

import Web.HttpApiData.Internal

-- | SMSAero sender's signature. This is used for the "from" field.
newtype Signature = Signature { getSignature :: Text } deriving (Eq, Show, FromJSON, ToJSON, ToHttpApiData, FromHttpApiData)

-- | SMSAero sent message id.
newtype MessageId = MessageId Int64 deriving (Eq, Show, Ord, FromJSON, ToJSON, ToHttpApiData, FromHttpApiData)

-- | SMSAero message body.
newtype MessageBody = MessageBody Text deriving (Eq, Show, FromJSON, ToJSON, ToHttpApiData, FromHttpApiData)

-- | SMSAero group name.
newtype Group = Group Text deriving (Eq, Show, FromJSON, ToJSON, ToHttpApiData, FromHttpApiData)

-- | SMSAero channel name.
type ChannelName = Text

-- | SMSAero authentication data.
data SMSAeroAuth = SMSAeroAuth
  { authUser      :: Text   -- ^ Username.
  , authPassword  :: Text   -- ^ MD5 hash of a password.
  }

instance FromJSON SMSAeroAuth where
  parseJSON (Object o) = SMSAeroAuth
    <$> o .: "user"
    <*> o .: "password"
  parseJSON _ = empty

instance ToJSON SMSAeroAuth where
  toJSON SMSAeroAuth{..} = object
    [ "user"     .= authUser
    , "password" .= authPassword ]

-- | Phone number.
newtype Phone = Phone { getPhone :: Int64 } deriving (Eq, Show, ToHttpApiData, FromHttpApiData)

-- | Date. Textually @SMSAeroDate@ is represented as a number of seconds since 01 Jan 1970.
newtype SMSAeroDate = SMSAeroDate { getSMSAeroDate :: UTCTime } deriving (Eq, Show)

instance ToHttpApiData SMSAeroDate where
  toQueryParam (SMSAeroDate dt) = Text.pack (show (utcTimeToPOSIXSeconds dt))

instance FromHttpApiData SMSAeroDate where
  parseQueryParam s = do
     n <- fromInteger <$> parseQueryParam s
     return (SMSAeroDate (posixSecondsToUTCTime n))

-- | Send type. This is used to describe send channel, equals to @FreeSignatureExceptMTC@ by default.
-- Textually @SendType@ is represented as a number from 1 to 6, excluding 5.
data SendType
  = PaidSignature          -- ^ Paid literal signature for all operators.
  | FreeSignatureExceptMTC -- ^ Free literal signature for all operators except MTS.
  | FreeSignature          -- ^ Free literal signature for all operators.
  | InfoSignature          -- ^ Infosignature for all operators.
  | International          -- ^ International delivery (for RU and KZ operators).
  deriving (Eq, Show, Bounded, Enum)

-- | Digital send channel. Textually represented as '1' if the parameter is present.
data DigitalChannel = DigitalChannel

instance ToHttpApiData DigitalChannel where
  toQueryParam _ = "1"

instance FromHttpApiData DigitalChannel where
  parseQueryParam "1" = Right DigitalChannel
  parseQueryParam x = defaultParseError x

instance ToHttpApiData SendType where
  toQueryParam PaidSignature          = "1"
  toQueryParam FreeSignatureExceptMTC = "2"
  toQueryParam FreeSignature          = "3"
  toQueryParam InfoSignature          = "4"
  toQueryParam International          = "6"

instance FromHttpApiData SendType where
  parseQueryParam = parseBoundedQueryParam

-- | Subscriber's name.
newtype Name = Name Text deriving (Eq, Show, ToHttpApiData, FromHttpApiData)

-- | Subscriber's birth date. Textually represented in %Y-%m-%d format.
newtype BirthDate = BirthDate Day deriving (Eq, Show, ToHttpApiData, FromHttpApiData)