Function apply

packages/app/src/context/server-session.ts:659–966

(event: { type: string; properties?: unknown })

  }

  const apply = (event: { type: string; properties?: unknown }) => {
    const eventID = eventSessionID(event)
    if (eventID) {
      touch(eventID)
      if (
        !data.info[eventID] &&
        event.type !== "session.created" &&
        event.type !== "session.updated" &&
        event.type !== "session.deleted"
      )
        void resolve(eventID).catch(() => {})
    }
    switch (event.type) {
      case "session.created":
        remember((event.properties as { info: Session }).info)
        return
      case "session.updated": {
        const info = (event.properties as { info: Session }).info
        remember(info)
        if (info.time.archived) evict([info.id])
        return
      }
      case "session.deleted": {
        const sessionID = (event.properties as { info: Session }).info.id
        infoSeen.delete(sessionID)
        setData(
          "info",
          produce((draft) => void delete draft[sessionID]),
        )
        evict([sessionID])
        return
      }
      case "session.diff": {
        const props = event.properties as { sessionID: string; diff: SnapshotFileDiff[] }
        setData("session_diff", props.sessionID, reconcile(cleanDiffs(props.diff), { key: "file" }))
        return
      }
      case "todo.updated": {
        const props = event.properties as { sessionID: string; todos: Todo[] }
        setData("todo", props.sessionID, reconcile(props.todos, { key: "id" }))
        return
      }
      case "session.status": {
        const props = event.properties as { sessionID: string; status: SessionStatus }
        setData("session_status", props.sessionID, reconcile(props.status))
        return
      }
      case "message.updated": {
        const info = cleanMessage((event.properties as { info: Message }).info)
        const load = messageLoads.get(info.sessionID)
        load?.touchedMessages.add(info.id)
        load?.removedMessages.delete(info.id)
        const items = optimistic.get(info.sessionID)
        const item = items?.get(info.id)
        if (items && item) {
          if (item.parts.length === 0) clearOptimistic(info.sessionID, info.id)
          if (item.parts.length > 0) items.set(info.id, { ...item, confirmedMessage: true })
        }