module View.Payment.Clone
  ( Input(..)
  , view
  ) where

import qualified Control.Monad          as Monad
import           Control.Monad.IO.Class (liftIO)
import qualified Data.Text              as T
import qualified Data.Time.Clock        as Time
import           Reflex.Dom             (Dynamic, Event, MonadWidget)
import qualified Reflex.Dom             as R

import           Common.Model           (Category (..), CategoryId,
                                         CreatePaymentForm (..), Frequency (..),
                                         Payment (..), PaymentCategory (..),
                                         SavedPayment (..))
import qualified Common.Msg             as Msg
import qualified Common.Util.Time       as TimeUtil
import qualified Component.Modal        as Modal
import qualified Util.Ajax              as Ajax
import qualified Util.Reflex            as ReflexUtil
import qualified View.Payment.Form      as Form

data Input t = Input
  { _input_show              :: Event t ()
  , _input_categories        :: [Category]
  , _input_paymentCategories :: Dynamic t [PaymentCategory]
  , _input_payment           :: Dynamic t Payment
  , _input_category          :: Dynamic t CategoryId
  }

view :: forall t m. MonadWidget t m => Input t -> Modal.Content t m SavedPayment
view input cancel = do

  currentDay <- liftIO $ Time.getCurrentTime >>= TimeUtil.timeToDay

  formOutput <- R.dyn $ do
    paymentCategories <- _input_paymentCategories input
    payment <- _input_payment input
    category <- _input_category input
    return . Form.view $ Form.Input
      { Form._input_cancel = cancel
      , Form._input_headerLabel = Msg.get Msg.Payment_CloneLong
      , Form._input_categories = _input_categories input
      , Form._input_paymentCategories = paymentCategories
      , Form._input_name = _payment_name payment
      , Form._input_cost = T.pack . show . _payment_cost $ payment
      , Form._input_date = currentDay
      , Form._input_category = category
      , Form._input_frequency = _payment_frequency payment
      , Form._input_mkPayload = CreatePaymentForm
      , Form._input_ajax = Ajax.post
      }

  hide <- ReflexUtil.flatten (Form._output_hide <$> formOutput)
  clonePayment <- ReflexUtil.flatten (Form._output_addPayment <$> formOutput)

  return $
    ( hide
    , clonePayment
    )