// app/api/options/laser_source/route.ts
export const dynamic = "force-dynamic";

import { NextRequest, NextResponse } from "next/server";
const BASE = (process.env.DIRECTUS_URL || "").replace(/\/$/, "");

function nmForTarget(target?: string | null) {
    // Optional: narrow list per tab; adjust if your data differs.
    switch (target) {
        case "fiber":      return 1064;
        case "uv":         return 355;
        case "co2-galvo":
        case "co2-gantry": return 10600;
        default:           return null;
    }
}

export async function GET(req: NextRequest) {
    try {
        const ma_at = req.cookies.get("ma_at")?.value;
        if (!ma_at) return NextResponse.json({ error: "Not authenticated" }, { status: 401 });

        const target = req.nextUrl.searchParams.get("target"); // "fiber" | "uv" | "co2-galvo" | "co2-gantry"
        const url = new URL(`${BASE}/items/laser_source`);
        // Your collection has make/model (no single "name")
        url.searchParams.set("fields", "id,make,model,nm");
        url.searchParams.set("sort", "make,model");

        const nm = nmForTarget(target);
        if (nm != null) {
            url.searchParams.set("filter[nm][_eq]", String(nm));
        }

        const res = await fetch(String(url), {
            headers: { Accept: "application/json", Authorization: `Bearer ${ma_at}` },
            cache: "no-store",
        });

        const text = await res.text().catch(() => "");
        if (!res.ok) {
            return NextResponse.json(
                { error: `Directus ${res.status}: ${text || res.statusText}` },
                { status: res.status }
            );
        }

        const json = text ? JSON.parse(text) : { data: [] };
        const data = (json?.data ?? []).map((r: any) => ({
            id: r.id,
            label: [r.make, r.model].filter(Boolean).join(" ").trim() || String(r.id),
        }));

        return NextResponse.json({ data });
    } catch (e: any) {
        return NextResponse.json({ error: e?.message || "Failed to load laser sources" }, { status: 500 });
    }
}