// app/api/account/avatar/route.ts
export const runtime = "nodejs";

import { NextResponse } from "next/server";
import { requireBearer } from "@/app/api/_lib/auth";

const API = (process.env.NEXT_PUBLIC_API_BASE_URL || "").replace(/\/$/, "");
const AVATAR_FOLDER_ID = process.env.DIRECTUS_AVATAR_FOLDER_ID || "";

function bad(msg: string, code = 400) {
    return NextResponse.json({ error: msg }, { status: code });
}

export async function POST(req: Request) {
    try {
        if (!AVATAR_FOLDER_ID) {
            return bad("Server misconfiguration: DIRECTUS_AVATAR_FOLDER_ID is not set", 500);
        }

        const bearer = requireBearer(req);

        const form = await req.formData();
        const file = form.get("file");
        if (!(file instanceof Blob)) return bad("Missing file");

        // Upload directly into the configured avatars folder
        const up = new FormData();
        up.set("file", file, (file as any).name || "avatar.bin");
        up.set("folder", AVATAR_FOLDER_ID);

        const r1 = await fetch(`${API}/files`, {
            method: "POST",
            headers: { Authorization: `Bearer ${bearer}` },
            body: up,
        });
        const j1 = await r1.json().catch(() => ({}));
        if (!r1.ok) {
            const msg = j1?.errors?.[0]?.message || "Upload failed";
            return bad(msg, r1.status);
        }
        const fileId: string = j1?.data?.id ?? j1?.id;

        // Link file to the current user
        const r2 = await fetch(`${API}/users/me`, {
            method: "PATCH",
            headers: { Authorization: `Bearer ${bearer}`, "Content-Type": "application/json" },
            body: JSON.stringify({ avatar: fileId }),
        });
        const j2 = await r2.json().catch(() => ({}));
        if (!r2.ok) {
            const msg = j2?.errors?.[0]?.message || "Link avatar failed";
            return bad(msg, r2.status);
        }

        // Respond with the updated avatar reference
        return NextResponse.json({ ok: true, avatar: j2?.data?.avatar ?? { id: fileId } });
    } catch (e: any) {
        return bad(e?.message || "Upload error", e?.status || 500);
    }
}