EventStream.hs

-- @generated by keiro-dsl 0.9.0.0 (language keiro-dsl 4) from aggregate ScalarAccount; do not edit.
module Generated.AggregateScalarExpressions.ScalarAccount.EventStream
  ( scalarAccountCategory
  , scalarAccountCommandCategory
  , scalarAccountEventStream
  , scalarAccountEventStreamDef
  , ScalarAccountEventStream
  , ScalarAccountEventStreamDef
  , scalarAccountSnapshotFixture
  ) where

import Generated.AggregateScalarExpressions.ScalarAccount.Domain
import Generated.AggregateScalarExpressions.ScalarAccount.Codec (scalarAccountCodec)
import Generated.AggregateScalarExpressions.ScalarAccount.Transducer (scalarAccountFoldFingerprint, scalarAccountTransducer)
import Keiki.Core (HsPred)
import Keiro.EventStream (EventStream (..), SnapshotPolicy (..))
import Keiro.EventStream.Validate (ValidatedEventStream, mkEventStreamOrThrow)
import Data.Text (Text)
import Keiro.Snapshot.Codec (defaultStateCodec, withFoldFingerprint)
import Keiro.Stream qualified as Stream

-- The validated aggregate stream category (hole-kind 5: referenced, never retyped).
-- Entity streams are '<category>-<id>' via Keiro.Stream.entityStream.
-- categoryUnsafe is safe here because this generated literal passed the DSL category proof.
scalarAccountCategory :: Stream.StreamCategory ScalarAccountEventStreamDef
scalarAccountCategory = Stream.categoryUnsafe "scalarAccount"

-- The same category text, typed for command envelopes such as PMCommand.
scalarAccountCommandCategory :: Stream.StreamCategory ScalarAccountCommand
scalarAccountCommandCategory = Stream.categoryUnsafe "scalarAccount"

type ScalarAccountEventStreamDef =
  EventStream (HsPred ScalarAccountRegs ScalarAccountCommand) ScalarAccountRegs ScalarAccountVertex ScalarAccountCommand ScalarAccountEvent

type ScalarAccountEventStream =
  ValidatedEventStream (HsPred ScalarAccountRegs ScalarAccountCommand) ScalarAccountRegs ScalarAccountVertex ScalarAccountCommand ScalarAccountEvent

scalarAccountEventStreamDef :: ScalarAccountEventStreamDef
scalarAccountEventStreamDef =
  EventStream
    { transducer = scalarAccountTransducer,
      initialState = ScalarAccountOpen,
      initialRegisters = initialScalarAccountRegs,
      eventCodec = scalarAccountCodec,
      resolveStreamName = Stream.streamName,
      snapshotPolicy = Every 1,
      -- The snapshot discriminator composes: the spec's state-codec version (bump it
      -- in the spec's `state-codec version=` clause), keiki's register and
      -- control-state shape hashes, and this fold fingerprint derived from the
      -- spec's transition surface (guards, writes, emits, states, register
      -- initials, referenced rules). Spec-visible fold changes invalidate old
      -- snapshots automatically. Version-2 Hole-owned transitions additionally
      -- compose their explicit hand-owned FoldVersion tokens here; bump the
      -- corresponding token whenever that Hole behavior changes.
      stateCodec = Just (withFoldFingerprint scalarAccountFoldFingerprint (defaultStateCodec 1))
    }

scalarAccountSnapshotFixture :: (Int, Text)
scalarAccountSnapshotFixture = (1, "aggregate-scalar-expressions-v2")

scalarAccountEventStream :: ScalarAccountEventStream
scalarAccountEventStream =
  mkEventStreamOrThrow "ScalarAccount" scalarAccountEventStreamDef