import { TRPCError } from "@trpc/server";

export function assertTimelineDateRangeValid(startDate: Date, endDate: Date): void {
  if (endDate >= startDate) {
    return;
  }

  throw new TRPCError({
    code: "BAD_REQUEST",
    message: "End date must be after start date",
  });
}

export function validateTimelineAllocationDateRanges(
  ranges: Array<{ startDate: Date; endDate: Date }>,
): void {
  for (const range of ranges) {
    assertTimelineDateRangeValid(range.startDate, range.endDate);
  }
}