Function getCurrentAndPrevious

packages/trpc/src/routers/overview.ts:88–136

(input: T, fetchPrevious: boolean, timezone: string)

);

function getCurrentAndPrevious<
  T extends {
    startDate?: string | null;
    endDate?: string | null;
    range: IChartRange;
    projectId: string;
  },
>(input: T, fetchPrevious: boolean, timezone: string) {
  const current = getChartStartEndDate(input, timezone);
  const previous = getChartPrevStartEndDate(current);

  return async <R>(
    fn: (input: T & { startDate: string; endDate: string }) => Promise<R>
  ): Promise<{
    current: R;
    previous: R | null;
  }> => {
    const endDate = await getOrganizationSubscriptionChartEndDate(
      input.projectId,
      current.endDate
    );
    if (endDate) {
      current.endDate = endDate;
      // Only expired trial scenarios
      if (new Date(current.startDate) > new Date(current.endDate)) {
        current.startDate = current.endDate;
      }
    }
    const res = await Promise.all([
      fn({
        ...input,
        startDate: current.startDate,
        endDate: current.endDate,
      }),
      fetchPrevious
        ? fn({
            ...input,
            startDate: previous.startDate,
            endDate: previous.endDate,
          })
        : Promise.resolve(null),
    ]);

    return {
      current: res[0],
      previous: res[1],
    };
  };
}

export const overviewRouter = createTRPCRouter({
  liveVisitors: overviewProcedure