module PaymentChannel.Internal.Receiver.Settle where

import PaymentChannel.Types
import PaymentChannel.Internal.Receiver.Types
import Bitcoin.Types
import qualified PaymentChannel.Internal.Settlement.Util as Settle
import PaymentChannel.Internal.Error
import PaymentChannel.Internal.Payment
import PaymentChannel.Internal.Metadata.Util
import qualified Network.Haskoin.Crypto as HC
import qualified Network.Haskoin.Transaction as HT


newMetaAfterSettle :: ServerPayChanI a -> MetadataI a
newMetaAfterSettle rpc@MkServerPayChan{rpcMetadata = prevMd} =
    prevMd
        { mdSettledValue   = Settle.infoFromState rpc : mdSettledValue prevMd :: [Settle.SettleInfo]
        , mdUnsettledValue = 0
        , mdChannelStatus  = statusAfterSettlement rpc
        }

-- |What would the status of the payment channel be
--   if the settlement transaction were published right now?
statusAfterSettlement :: ServerPayChanI a -> PayChanStatus
statusAfterSettlement rpc@MkServerPayChan{rpcState = pcs} =
    if changeAddress pcs /= fundingAddress rpc then     -- channelIsExhausted
        ChanClosed
    else
        ReadyForPayment
  where
    changeAddress = clientChangeAddr . pcsPayment

-- settleChanState :: SignedBtcTx ChanParams -> ServerPayChanI a -> ServerPayChanI a
-- settleChanState tx rpc@MkServerPayChan{rpcState = pcs} =
--     undefined
--         where
--             clientOutM = listToMaybe $ filter ()
--             newFti = CFundingTxInfo h i (pcsClientChangeVal pcs)
--             newPCS = pcs { pcsFundingTxInfo = newFti, pcsPaymentCount = 0 }