// app/api/directus/choices/route.ts
import { NextRequest } from "next/server";
import { directusAdminFetch } from "@/lib/directus";

export const dynamic = "force-dynamic";

export async function GET(req: NextRequest) {
    const { searchParams } = new URL(req.url);
    const collection = String(searchParams.get("collection") || "");
    const group = String(searchParams.get("group") || "");
    const field = String(searchParams.get("field") || "");
    if (!collection || !group || !field) {
        return Response.json({ error: "collection, group, and field are required" }, { status: 400 });
    }

    // Pull field metadata server-side (admin token), then extract repeater child choices
    const meta = await directusAdminFetch<{ data: any[] }>(
        `/fields?filter[collection][_eq]=${encodeURIComponent(collection)}&limit=500`
    );
    const rows: any[] = Array.isArray(meta?.data) ? meta.data : [];

    const parent = rows.find((r: any) => r?.field === group);
    const nestedChildren: any[] = parent?.meta?.options?.fields || [];
    const child =
    nestedChildren.find((f: any) => f?.field === field) ||
    rows.find((r: any) => r?.field === `${group}.${field}`);

    const choices: any[] =
    (child?.options?.choices as any[]) ??
    (child?.meta?.options?.choices as any[]) ??
    [];

    const data = choices.map((c: any) => ({
        id: String(c.value ?? c.key ?? c.id),
                                          label: String(c.text ?? c.label ?? c.name ?? c.value ?? c.id),
    }));

    return Response.json({ data });
}