import { NextResponse } from 'next/server';
import { getAdminDb } from '@/lib/firebase/admin';

export async function POST(request: Request) {
  try {
    const url = new URL(request.url);
    const body = await request
      .json()
      .catch(() => ({ projectId: url.searchParams.get('projectId') }));

    const projectId = (body?.projectId ?? url.searchParams.get('projectId') ?? '').trim();

    if (!projectId) {
      return NextResponse.json(
        { error: 'projectId is required' },
        { status: 400 },
      );
    }

    const adminDb = getAdminDb();
    const docRef = adminDb.collection('chat_conversations').doc(projectId);
    await docRef.delete();

    return NextResponse.json({ success: true });
  } catch (error) {
    console.error('[ai/conversation/reset] Failed to reset conversation', error);
    return NextResponse.json(
      {
        error: 'Failed to reset conversation',
        details: error instanceof Error ? error.message : String(error),
      },
      { status: 500 },
    );
  }
}