import { NextResponse } from 'next/server';

/**
 * Returns the HF username for the current token.
 * Used to auto-fill the annotator name in production.
 */
export async function GET() {
    const token = process.env.HF_TOKEN;
    if (!token) {
        return NextResponse.json({ username: null }, { status: 200 });
    }

    try {
        const res = await fetch('https://huggingface.co/api/whoami-v2', {
            headers: { 'Authorization': `Bearer ${token}` },
        });

        if (!res.ok) {
            return NextResponse.json({ username: null }, { status: 200 });
        }

        const data = await res.json();
        return NextResponse.json({ username: data.name || null });
    } catch (error) {
        console.error('HF whoami error:', error);
        return NextResponse.json({ username: null }, { status: 200 });
    }
}