Codec.hs

{-# LANGUAGE OverloadedRecordDot #-}
-- @generated by keiro-dsl; do not edit. Regenerated from the .keiro spec.
module SkelProcess.Generated.MyService.Surge.Codec (
    surgeCodec,
    parseSurgeEvent,
    encodeSurgeEvent,
) where

import SkelProcess.Generated.MyService.Surge.Domain
import SkelProcess.Generated.MyService.Nominals (HospitalId (..), hospitalIdText)
import Data.Aeson (Value, object, withObject, (.:), (.=))
import Data.Aeson.Types (Parser, parseEither)
import Data.List.NonEmpty (NonEmpty (..))
import Data.Text (Text)
import qualified Data.Text as T
import Keiro.Codec (Codec (..), EventType (..))





surgeCodec :: Codec SurgeEvent
surgeCodec =
  Codec
    { eventTypes = EventType "SurgeThresholdNoted" :| [EventType "SurgeTimerMarked"]
    , eventType = \case
        SurgeThresholdNoted{} -> EventType "SurgeThresholdNoted"
        SurgeTimerMarked{} -> EventType "SurgeTimerMarked"
    , schemaVersion = 1
    , encode = encodeSurgeEvent
    , decode = parseSurgeEvent
    , upcasters = []
    }

encodeSurgeEvent :: SurgeEvent -> Value
encodeSurgeEvent = \case
  SurgeThresholdNoted payload ->
    object
      [ "kind" .= ("SurgeThresholdNoted" :: Text)
      , "hospitalId" .= hospitalIdText payload.hospitalId
      , "availableIcuBeds" .= payload.availableIcuBeds
      , "redDemand" .= payload.redDemand
      , "timerId" .= payload.timerId
      ]
  SurgeTimerMarked payload ->
    object
      [ "kind" .= ("SurgeTimerMarked" :: Text)
      , "hospitalId" .= hospitalIdText payload.hospitalId
      , "timerId" .= payload.timerId
      ]

parseSurgeEvent :: EventType -> Value -> Either Text SurgeEvent
parseSurgeEvent (EventType tag) = mapLeftText . parseEither (withObject "SurgeEvent" go)
  where
    go o = do
      case tag of
        "SurgeThresholdNoted" ->
          SurgeThresholdNoted <$> (SurgeThresholdNotedData <$> (HospitalId <$> o .: "hospitalId") <*> o .: "availableIcuBeds" <*> o .: "redDemand" <*> o .: "timerId")
        "SurgeTimerMarked" ->
          SurgeTimerMarked <$> (SurgeTimerMarkedData <$> (HospitalId <$> o .: "hospitalId") <*> o .: "timerId")
        _ -> fail "unknown event type"

mapLeftText :: Either String b -> Either Text b
mapLeftText = either (Left . T.pack) Right