module LndClient.Data.HtlcEvent
  ( HtlcEvent (..),
  )
where

import LndClient.Import
import qualified Proto.Routerrpc.Router as LnGRPC
import qualified Proto.Routerrpc.Router_Fields as LnGRPC

data HtlcEvent = HtlcEvent
  { incomingChannelId :: Word64,
    outgoingChannelId :: Word64,
    incomingHtlcId :: Word64,
    outgoingHtlcId :: Word64,
    timestampNs :: Word64,
    eventType :: EventType
  }
  deriving stock (Eq, Generic)

instance Out HtlcEvent

data EventType
  = UNKNOWN
  | SEND
  | RECEIVE
  | FORWARD
  deriving stock (Eq, Generic)

instance Out EventType

instance FromGrpc HtlcEvent LnGRPC.HtlcEvent where
  fromGrpc x =
    HtlcEvent
      <$> fromGrpc (x ^. LnGRPC.incomingChannelId)
      <*> fromGrpc (x ^. LnGRPC.outgoingChannelId)
      <*> fromGrpc (x ^. LnGRPC.incomingHtlcId)
      <*> fromGrpc (x ^. LnGRPC.outgoingHtlcId)
      <*> fromGrpc (x ^. LnGRPC.timestampNs)
      <*> fromGrpc (x ^. LnGRPC.eventType)

instance FromGrpc EventType LnGRPC.HtlcEvent'EventType where
  fromGrpc x =
    case x of
      LnGRPC.HtlcEvent'UNKNOWN -> Right UNKNOWN
      LnGRPC.HtlcEvent'SEND -> Right SEND
      LnGRPC.HtlcEvent'RECEIVE -> Right RECEIVE
      LnGRPC.HtlcEvent'FORWARD -> Right FORWARD
      LnGRPC.HtlcEvent'EventType'Unrecognized v ->
        Left
          . FromGrpcError
          $ "Cannot parse EventType, value:" <> inspect v