Function reduceAppEvent

apps/kimi-web/src/api/daemon/eventReducer.ts:230–672

(
  state: KimiClientState,
  event: AppEvent,
  meta: EventMeta,
)

}

export function reduceAppEvent(
  state: KimiClientState,
  event: AppEvent,
  meta: EventMeta,
): KimiClientState {
  const next = cloneState(state);

  // Always advance lastSeqBySession for every event that carries seq info.
  advanceSeq(next, meta.sessionId, meta.seq);

  switch (event.type) {
    // -------------------------------------------------------------------------
    case 'sessionCreated': {
      const exists = next.sessions.some((s) => s.id === event.session.id);
      if (!exists) {
        next.sessions = [event.session, ...next.sessions];
      }
      break;
    }

    // -------------------------------------------------------------------------
    case 'sessionUpdated': {
      next.sessions = next.sessions.map((s) =>
        s.id === event.session.id ? event.session : s,
      );
      break;
    }

    // -------------------------------------------------------------------------
    case 'sessionDeleted': {
      const id = event.sessionId;
      next.sessions = next.sessions.filter((s) => s.id !== id);
      delete next.messagesBySession[id];
      delete next.tasksBySession[id];
      delete next.goalBySession[id];
      delete next.approvalsBySession[id];
      delete next.questionsBySession[id];
      delete next.lastSeqBySession[id];
      if (next.activeSessionId === id) {
        next.activeSessionId = undefined;
      }
      break;
    }

    // -------------------------------------------------------------------------
    case 'sessionStatusChanged': {
      next.sessions = next.sessions.map((s) => {
        if (s.id !== event.sessionId) return s;
        return {
          ...s,
          status: event.status,
          currentPromptId: event.currentPromptId,
        };
      });
      break;
    }

    // -------------------------------------------------------------------------