/**
 * GET /api/events
 *
 * Query params:
 *   date_from      YYYY-MM-DD  (default: today)
 *   date_to        YYYY-MM-DD
 *   venue_id       string
 *   keyword        string  (title or artist partial match)
 *   capacity_range small | medium | large
 *   area           string
 *   limit          1–100 (default 60)
 *   offset         integer (default 0)
 */
import type { Route } from "./+types/api.events._index";
import { queryEvents } from "~/lib/db.server";

export async function loader({ request }: Route.LoaderArgs) {
  const url = new URL(request.url);
  const p = url.searchParams;

  const rawLimit = parseInt(p.get("limit") ?? "60", 10);
  const limit = Number.isNaN(rawLimit) ? 60 : Math.min(Math.max(rawLimit, 1), 100);
  const rawOffset = parseInt(p.get("offset") ?? "0", 10);
  const offset = Number.isNaN(rawOffset) ? 0 : Math.max(rawOffset, 0);

  const capacityRaw = p.get("capacity_range");
  const capacity_range =
    capacityRaw === "small" || capacityRaw === "medium" || capacityRaw === "large"
      ? capacityRaw
      : undefined;

  const events = queryEvents({
    date_from: p.get("date_from") ?? undefined,
    date_to: p.get("date_to") ?? undefined,
    venue_id: p.get("venue_id") ?? undefined,
    keyword: p.get("keyword") ?? undefined,
    area: p.get("area") ?? undefined,
    capacity_range,
    limit,
    offset,
  });

  return Response.json(
    { events, meta: { limit, offset, count: events.length } },
    { headers: { "Cache-Control": "public, max-age=300" } }
  );
}