Function markThreadUnread

apps/web/src/uiStateStore.ts:252–275

(
  state: UiState,
  threadId: string,
  latestTurnCompletedAt: string | null | undefined,
)

}

export function markThreadUnread(
  state: UiState,
  threadId: string,
  latestTurnCompletedAt: string | null | undefined,
): UiState {
  if (!latestTurnCompletedAt) {
    return state;
  }
  const latestTurnCompletedAtMs = Date.parse(latestTurnCompletedAt);
  if (Number.isNaN(latestTurnCompletedAtMs)) {
    return state;
  }
  const unreadVisitedAt = new Date(latestTurnCompletedAtMs - 1).toISOString();
  if (state.threadLastVisitedAtById[threadId] === unreadVisitedAt) {
    return state;
  }
  return {
    ...state,
    threadLastVisitedAtById: {
      ...state.threadLastVisitedAtById,
      [threadId]: unreadVisitedAt,
    },
  };
}

export function setThreadChangedFilesExpanded(
  state: UiState,