src/app/api/rag/retrieve/route.ts

import { NextResponse } from 'next/server';

const RAG_BACKEND_URL = process.env.RAG_BACKEND_URL || 'http://localhost:8000';

// POST /api/rag/retrieve — Proxy to RAG backend /v1/retrieve
export async function POST(request: Request) {
  try {
    const body = await request.json();
    const res = await fetch(`${RAG_BACKEND_URL}/v1/retrieve`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(body),
      signal: AbortSignal.timeout(30000),
    });

    if (!res.ok) {
      const err = await res.json().catch(() => ({ detail: res.statusText }));
      return NextResponse.json(
        { success: false, error: err.detail || 'Retrieve failed' },
        { status: res.status }
      );
    }

    const data = await res.json();
    return NextResponse.json({ success: true, data });
  } catch (error) {
    return NextResponse.json(
      {
        success: false,
        error: error instanceof Error ? error.message : 'Internal error',
      },
      { status: 500 }
    );
  }
}