import {
  buildPaginatedResult,
  DEFAULT_PAGE_SIZE,
  err,
  ok,
  type PaginationInput,
  type ReadonlyDB,
} from "@tailor-platform/erp-kit/core";
import type { DB } from "../generated/kysely-tailordb";
import { InvalidQueryParamsError } from "../lib/errors.generated";

export interface ListPunchesByOccurredDateInput extends PaginationInput {
  occurredDate: Date;
}

/**
 * Function: listPunchesByOccurredDate
 * Description: Lists all TimeClockEvents on a given occurred date, raw and
 * pre-day-breaker, paginated. Filters by the calendar date portion of
 * occurredAt, not by any derived workDate — no day-breaker logic is applied
 * at this layer. Includes events across all Assignments and sources.
 */
export async function run(db: ReadonlyDB<DB>, input: ListPunchesByOccurredDateInput) {
  if (!input.occurredDate || Number.isNaN(input.occurredDate.getTime())) {
    return err(new InvalidQueryParamsError("occurredDate"));
  }

  const startOfDay = new Date(
    Date.UTC(
      input.occurredDate.getUTCFullYear(),
      input.occurredDate.getUTCMonth(),
      input.occurredDate.getUTCDate(),
    ),
  );
  const startOfNextDay = new Date(startOfDay.getTime() + 24 * 60 * 60 * 1000);

  const limit = input.limit ?? DEFAULT_PAGE_SIZE;
  const offset = input.offset ?? 0;
  const orderBy = input.orderBy ?? "id";
  const orderDirection = input.orderDirection ?? "asc";

  const punches = await db
    .selectFrom("TimeClockEvent")
    .selectAll()
    .where("occurredAt", ">=", startOfDay)
    .where("occurredAt", "<", startOfNextDay)
    .orderBy(orderBy, orderDirection)
    .limit(limit + 1)
    .offset(offset)
    .execute();

  return ok(buildPaginatedResult(punches, limit));
}