import { NextResponse, type NextRequest } from "next/server";

import { parsePaging, type ItemList } from "@/lib/db";

import { getMembers, getMemberCounts, type MemberSummary } from "@/lib/feed";

import type { PartyCode } from "@/lib/neutrality";

export const dynamic = "force-dynamic";

export async function GET(req: NextRequest) {

  const sp = req.nextUrl.searchParams;

  const { limit, offset } = parsePaging(sp);

  const party = sp.get("party")?.toUpperCase().startsWith("R")

    ? "R"

    : sp.get("party")?.toUpperCase().startsWith("D")

      ? "D"

      : sp.get("party")?.toUpperCase().startsWith("I")

        ? "I"

        : undefined;

  const filter = {

    q: sp.get("q") || undefined,

    state: sp.get("state") || undefined,

    chamber: sp.get("chamber") || undefined,

    party: party as PartyCode | undefined,

  };

  const items = getMembers(filter);

  const total = filter.q || filter.state || filter.chamber || filter.party

    ? items.length

    : getMemberCounts().total;

  const paged = items.slice(offset, offset + limit);

  const body: ItemList<MemberSummary> = { items: paged, total, limit, offset };

  return NextResponse.json(body, {

    headers: { "Cache-Control": "public, s-maxage=300, stale-while-revalidate=600" },

  });

}